Skip to getting started
Interval Hero
Open app

← Back to app

The Learner's Handbook

Learning solo? Interval Hero trains your eyes to read the jump between notes, so sight-reading stops feeling like decoding one note at a time.

  • Open Game Mode

    It guides you one small step at a time.

  • Read, then play

    Later on, you play the note into the mic.

  • Keep going

    Pass a level and the next one opens.

Getting started

You’re learning solo, so your account is yours to run.

  1. Create your account

    On game.interval-hero.app, choose Create free account. You confirm you're 16+ — a younger learner should join through a teacher instead.

  2. Add an email (recommended)

    Optional, but it's the only way to reset a lost password yourself. Add one now, save trouble later.

  3. Open Game Mode

    The main thing to do: open Game Mode and keep going. It starts easy, one new idea at a time.

  4. Sit at your piano

    Later levels ask you to play the note, so keep it within reach.

Your Home screen

Home opens after you sign in. It shows what to do today and how your week is going. Get back to it any time with 🏠 Home in the menu.

  1. Jump to

    Four big buttons at the top: Practice, Game Mode, My Progress and Weekly Challenge (How it works on a free account).

  2. Today’s goal

    A ring fills as you answer questions today. Tap Change to aim for 10, 20, 30 or 40 a day.

  3. Streak badges

    Practise on days in a row to earn a badge at 3, 7, 14, 30, 50, 100, 200 and 365 days.

  4. Daily Quest

    Until Game Mode is finished, it points to your next level. After that, it sets two short tasks from your weakest areas.

  5. This week

    Your Weekly Challenge and today’s Ranked Practice points (Pro). An unfinished Ranked Practice session shows Resume.

  6. Your numbers

    Reading Level, accuracy and day streak. Once you’ve unlocked App score, this week’s points sit beside last week’s.

One path. Keep climbing.

Pass one small level and the next opens. No route to plan — just keep going.

  1. Level 1 · Free

    5-Note Range

    Read notes in a small five-note space.

  2. Level 2 · Free

    Chain

    Follow bigger jumps from note to note.

  3. Level 3 · Free

    Guide Notes

    Find your landmark notes on the staff.

  4. Level 4 · Pro

    Find the Start

    Find the nearest guide note, then count to the note.

  5. Level 5 · Pro

    Challenge

    Read against a timer.

  6. Level 6 · Pro

    Play the Note

    Read it, then play it on your piano.

  7. Level 7 · Pro

    Chord Inversions

    Read a whole chord shape at once.

The practice modes

Game Mode walks you through these in order. Once passed, practise any of them on their own tab.

5-Note Range

Free

Read the jump between notes inside a small five-note space. A gentle place to start.

Chain

Free

Each new note starts where the last one ended — read the direction and size of the jump.

Guide Notes

Free

Learn landmark notes so you always have somewhere reliable to count from, in both clefs.

Find the Start

Pro

For any note, put a guide note near it (no more than a 5th away) on its exact line or space and press Check, then choose the interval from that guide note. In the last level the C is never drawn, just like real sheet music. It is how you find the first note on the piano.

Play the Note

Pro

Read the note, then play it on your piano — the mic listens and checks the pitch; MIDI also works.

Challenge

Free + Pro

Answer as many as you can before the timer ends. Good once you already know the material.

Chord Inversions

Pro

Read a whole chord shape — root position and its inversions — instead of one note at a time.

Playing notes into the mic

In Play the Note, you answer by playing on your piano instead of tapping.

  1. Allow the microphone

    Your browser will ask, the first time — choose Allow. Declined by mistake? Turn it back on in your browser's site settings.

  2. Put the device near the piano

    Place the phone, tablet or laptop close to the keys so the mic hears you clearly.

  3. Play the note you read

    Read the note, then play it. Interval Hero listens and tells you if it matches.

How your score works

Only your first answer counts. Fixing a wrong note afterwards is good practice, but doesn't change the score.

Example · five questions, one fixed after a retry
  1. 1First try
  2. 2First try
  3. 3After retry
  4. 4First try
  5. 5First try
4 out of 5 = 80% first-try accuracy

Four notes were right on the very first try.

All 5 correct in the end

You fixed number 3. That’s useful learning; the score just stays at 80%.

Before and after each session

  1. Ready to start?

    Most sessions open by asking Sound on or Sound off, plus treble or bass clef for Chain, 5-Note Range and Chord Inversions.

  2. Session complete

    A popup shows your first-try score (in Game Mode, the level result). View score breakdown opens a table of what you got right, weakest first; Hide folds it away.

  3. Review your mistakes

    Under the breakdown, Review mistakes replays the intervals you missed as a quick drill. Guide Notes and chord misses have no interval to replay, so they’re left out.

Ranks

Climb through ranks — Rookie, Apprentice, Adept and beyond — grown from your accuracy, questions answered, and practice streak. Top ranks also need all seven levels.

Leaderboard

An optional global leaderboard with two sides, Ranked and App score. You only appear with a display name if you choose one and opt in, which is off by default.

App score: points for speed

Once you’ve finished the path, App score turns everyday practice into points. Get it right first time, and the faster you answer, the more you get. It’s a Pro feature, and you choose whether to switch it on.

Unlocking it

App score opens when all three are true. Until then, a countdown on Home shows what

App score opens when all three are true. Until then, the Leaderboard’s App score side shows what’s left.

rsquo;s left, with See what you

App score opens when all three are true. Until then, the Leaderboard’s App score side shows what’s left.

rsquo;ll unlock
for a preview.

  1. Finish Game Mode

    Every level passed, all seven.

  2. Put the hours in

    5 hours of practice, or 2,500 questions answered.

  3. Read well

    A Reading Level of 8.5 or more (see My Progress).

  1. The offer

    The moment you qualify, this popup appears: Turn it on or Not now. Change your mind any time with the switch on the Leaderboard’s App score side.

    The App score unlocked popup: the points table and the Not now and Turn it on buttons.

How points work

With App score on, a clock counts up in the top-left of the staff on every question. Answer right first time and your points appear beside it, like ⏱ 3.4s +16. A wrong first try or Show Answer scores 0, and the clock pauses while a popup covers the question.

  1. The timer

    Find the Start answered in 2.2 seconds: full marks, +20.

    A Find the Start question answered: the timer box above the staff reads 2.2s with +20 beside it.
Most modesPlay the NoteFind the Start
Full marks10 under 2 s20 under 3 s20 under 7 s
Then1 less each second2 less each second2 less each second
Nothing from11 s12 s14 s

Most modes means 5-Note Range, Chain, Guide Notes and Chord Inversions. Play the Note and Find the Start score double: you find the key, or count from a guide note, before you answer. Checkpoint, the Challenge tab and mistake reviews don’t score.

Where you see it

Weeks run Monday to Sunday (Malaysia/Singapore time). Points and bests start fresh each Monday, and last week’s stay on show to beat.

  1. During a session

    A ⚡ Points card under the staff keeps the running total.

  2. At the end

    The session popup shows your points out of the maximum, this week’s total, and your best for that mode this week and last week.

    The Session complete popup with an App score box: 172 of 190 points, New best this week, 943 points this week.
  3. On Home

    This week’s points beside last week’s, with the difference.

    Home: Reading Level, accuracy and day streak, then the App score card with 943 this week, 530 last week and up 413.
  4. In My Progress

    A ⚡ App score tab under Progress over time: points per day for each mode, this week against last week.

    My Progress on the App score tab: 943 points this week, 530 last week, and a daily points chart for each mode.
  5. On the Leaderboard

    The App score side ranks opted-in players worldwide on this week’s points, and lists your best session in each mode (10, 20 or 50 notes). Switch it off and you leave that side; your points are kept.

    The Leaderboard on its App score side: this week’s points with the on/off switch and best sessions.

Free and Pro

You can get a long way for free. Pro removes the limits and opens the rest of the path.

Free gets you started

Levels 1–3 are free, with a 40-question daily allowance outside Game Mode (Game Mode itself isn't capped).

Pro takes it further

Removes the daily cap, opens Levels 4–7 as you unlock them, and adds App score once you’ve finished the path. New subscribers get a 7-day free trial.

My Progress, challenges and the leaderboard

Four things under the three-line menu button that show how you're doing and let you measure yourself against other players. Weekly Challenge, Ranked Practice and the Leaderboard need Pro; My Progress is on every account.

Where they are

Open the menu and the four items sit together, right under Game Mode.

  1. Open the menu

    Tap the three-line button at the top right, then any of the four ringed items. A locked item shows a padlock: that account needs Pro.

    The app menu with My Progress, Weekly Challenge, Ranked Practice and Leaderboard circled in red.

My Progress

A record of every finished session, updated the moment it ends. Reading Level and the skills breakdown are Pro; the rest is on every account.

  1. The summary

    Six figures: Reading Level out of 10, first-try accuracy, total questions, sessions, day streak and average response time, plus one line of advice on what's next.

    The top of My Progress: six stat cards, a strong-across-the-board message, the reading skills groups and the first trend chart.
  2. Your reading skills

    Three groups — Intervals, Guide Notes, Chord Inversions. Tap one for a bar per interval size, landmark or inversion (needs 5+ first-try answers to count).

    The Intervals group expanded, showing a green accuracy bar for 2nds through Octaves.
  3. Progress over time

    One chart per mode, one bar per practice day, switching between Accuracy, Response time and, once unlocked, ⚡ App score. Tap a bar for the exact figure and date; below is a worst-first table and a day-by-day log.

    The Progress over time charts with a tapped bar showing 85%, 11/09/2026, 17 of 20 first try.

Weekly Challenge

One fixed, server-graded question set each week, identical for everyone, one attempt Monday to Sunday. The format rotates through four: Sprint (2 minutes, most correct wins), Speed 30 (30 questions, fastest time: a wrong answer adds 5 seconds and, from 12/10/2026, a right one takes 1 second off, shown beside the clock), Sudden Death (first mistake or 10 minutes ends it) and The Full Sweep (40 questions across everything Game Mode has taught).

  1. Read the rules, then Start

    The first open each week shows this card. Nothing starts until you tap Start — that's your one run for the week.

    The Sudden Death rules card: how it works, good to know, and a Start button.
  2. Play it

    Looks like normal practice, clock/streak/count along the top. Only the first tap counts — no retries here.

    A Sudden Death run in progress: 9:59 on the clock, streak 0, question 1, an interval on the staff and answer buttons below.
  3. Your result

    One go a week, so warm up with normal practice first. Your result goes straight onto the leaderboard's challenge tab.

    The Weekly Challenge card after playing: already played this week, 27 questions in a row.

Ranked Practice

Ordinary practice that counts: 1 point per correct answer toward the week's leaderboard, plus a bonus for 75%+ or 90%+ sessions. Capped at 60/day — three short sessions beat one long one, and the board rewards the habit, not the binge.

  1. Pick a mode

    Chain, Guide Notes, Find the Start or Chord Inversions, 20 questions each.

    The Ranked Practice picker with four modes: Chain, Guide Notes, Find the Start and Chord Inversions.
  2. Answer 20 questions

    Same screen as the Weekly Challenge. Points bank only when question 20 is answered. Closed early? Pick the same mode again the same day to carry on where you stopped, or tap Resume on Home.

    A Ranked Practice Chain session: question 1 of 20, correct 0, an interval on the staff and answer buttons.

Leaderboard

As a solo learner, your board is the global one: every opted-in player, this week only. It has two sides: Ranked, with the two tabs below, and ⚡ App score. Your own row is highlighted, showing the top three plus the players around you.

  1. Players worldwide

    The Practice points tab, ranked by this week’s Ranked Practice.

    The Leaderboard on the Practice points tab.
  2. This week’s challenge

    The second tab ranks the Weekly Challenge, in that format’s own units.

    The Leaderboard on the This week's challenge tab.
  3. App score side

    Tap ⚡ App score at the top to rank this week’s App score points instead. It also holds your on/off switch and your best sessions. See App score.

    The Leaderboard on its App score side: this week’s points with the on/off switch and best sessions.

Checkpoints and ranks

Two ways the app sums up progress over the long run: a Checkpoint measures it on a given day, a rank tracks it continuously.

Checkpoints

A short check-in the app sets for you every so often: 50 mixed questions in 18 minutes, one go. Not a test you can fail — a snapshot across the three skills that matter most for reading at the piano. Checkpoints need Pro.

When one comes up. The first unlocks once a sub-level is passed in each of Guide Notes, Play the Note and Chord Inversions. After that, every 5 further sub-levels — or every 5 sessions once Game Mode is finished. Questions are always set at the hardest sub-level passed, so it's always on material actually learned.

  1. The announcement

    Appears on Home when a Checkpoint becomes available. Let me practice more puts it off with no penalty.

    The Time for a Checkpoint announcement listing Guide Notes, Chord Inversions and Play the Note, with Let me practice more and I am ready buttons.
    Home screen
  2. The Home card

    Shows what's needed before the first one, or how long until the next. When ready, tap Start Checkpoint.

    The Home screen Checkpoint card reading Checkpoint ready, 40 mixed questions, 15 minutes, one attempt, with the Start Checkpoint button circled in red.
    Home screen
  3. Taking it

    13 Guide Notes, 10 Find the Start, 13 Chord Inversions, then 14 Play the Note questions, one 18-minute clock. Each section starts on a clean staff, the numbering carries on, and the question you’re on is the blue note. Only the first answer counts, and the score is kept whether time runs out or not.

    A Checkpoint under way: the orange Checkpoint banner with 17:58 on the clock and 0 correct, 0 answered, above a grand staff with the first Guide Notes question in blue.
    During a Checkpoint

Ranks

Your rank shows how your reading is going overall, from 🌱 Interval Rookie to 👑 Interval Maestro — worked out from lifetime accuracy, questions answered, and practice streak. Keep all three moving and you climb; let the streak lapse and you can slip back. Unlocks once Levels 1–3 are passed.

RankFirst-try accuracyQuestions answeredDay streakAlso needs
🌱 Interval RookieGame Mode Levels 1 to 3 passed
🎯 Interval Apprentice75%1002 days
🎼 Interval Adept82%3004 days
🏅 Interval Virtuoso88%7507 daysAll 7 Game Mode levels (Pro)
👑 Interval Maestro93%1,50014 daysAll 7 Game Mode levels (Pro)
  1. The badge

    Sits in the header next to the app name once unlocked. Tap it to open the ladder.

    The app header with the Interval Adept rank badge circled in red, next to the Interval Hero title.
    Header, any mode
  2. The ladder

    All five tiers, current one highlighted, with the exact numbers still needed for the next: green if met, red if not.

    The rank ladder showing Interval Adept as current, with the next tier Interval Virtuoso needing 86 of 88 percent accuracy, 420 of 750 questions, a 7-day streak met, and Game Mode Levels 4 to 6.
    Tap the badge

Settings

One panel to shape a session — clef, interval size, direction, question count — showing only what your mode needs. Changes wait for Apply, and it resets to defaults each time you open the app, so experiment freely.

Opening it

Tap Settings in the header, between the menu button and the theme toggle. Tap again, or anywhere outside, to close it — or press S on a keyboard.

  1. The Settings button

    Always in the header, in every mode. It lights up while the panel is open.

    The app header with the Settings button circled in red, between the menu button and the theme toggle.
    Any mode

What the panel shows in each mode

The top changes per mode; Playback, Difficulty and Display at the bottom stay the same everywhere.

  1. 5-Note Range

    Clef: treble or bass. Starting Note: Random or a fixed landmark. Session Length: 10, 20, 50 or Unlimited.

    The Settings panel in 5-Note Range mode: Clef, Starting Note with Random selected, Session Length 20 notes, then Playback.
    5-Note Range mode
  2. Chain

    Interval Range sets the smallest/largest interval (default Unison–5th); Direction limits jumps to Up, Down or Both. Same two controls apply in Play the Note when using Chain.

    The Settings panel in Chain mode: Clef, Interval Range with Min Unison and Max 5th, Direction with Both selected, Session Length.
    Chain mode
  3. Chord Inversions

    Chord Type switches triads to 7th chords (adds a 3rd inversion). Guide Notes has no controls of its own beyond Session Length.

    The Settings panel in Chord Inversions mode: Clef, Chord Type with the 7th chords box unticked, Session Length.
    Chord Inversions mode
  4. The shared controls

    Playback: untick Play sound to silence auto-play and the ▶ button — clicking a note on the staff still plays it, since that's a deliberate check, not the app giving away the answer. Difficulty: Adaptive asks more of the sizes you get wrong most. Display: untick Show notes on staff to answer from sound alone (needs Play sound on) — a reading drill becomes ear training.

    The lower part of the Settings panel: Playback with Play sound and Auto-play new question ticked and speed Fast, Adaptive difficulty ticked, Show notes on staff ticked, and the Cancel and Apply buttons underneath.
    Any mode, scrolled down

Apply and Cancel

A changed control doesn't take effect until Apply, which only lights up once something's changed.

  1. Change, then Apply

    Tap Apply: the panel closes and a fresh session starts on the new settings. On Challenge, Apply just sets the values — press Start when ready.

    The bottom of the Settings panel after changing Session Length: a note reading Apply starts a new session with these settings, and the Apply button lit and circled in red.
    Any mode, after a change
  2. Or Cancel

    Reverts every control and leaves the current session untouched. Tapping outside with unapplied changes asks first, so a stray tap can't lose or apply them by accident.

    A small dialog reading Apply changes or cancel? with Cancel and Apply buttons.
    Tapping outside with changes pending

During a timed run (Challenge or Checkpoint), Apply stays off until you finish or end it.

Get unstuck

Start with the simple checks.

The mic isn’t hearing my playing
  1. Make sure you chose Allow when the browser asked.
  2. Check the selected input if your device has more than one mic.
  3. Move the device closer to the piano and play a clear, firm note.
  4. Close video calls or other apps using the microphone.

MIDI is another option on a computer with a compatible keyboard.

I played the right note but it was rejected

Release the pedal and let the previous sound fade, and check the octave as well as the note name. In Chord Inversions, roll the chord slowly from the bottom up.

I forgot my password

Use Forgot your password? on the login page — only works if you added an email, which is why doing so early is worth it. Without one, a lost password can't be recovered.

Do I have to pay?

No — Levels 1–3 are free, with a daily allowance outside Game Mode. Upgrade to Pro for Find the Start, the timer, Play the Note, Chord Inversions, App score and no cap. See Free and Pro.

What does “only the first answer counts” mean?

Whether you got each note right on your first try. Fix a wrong note afterwards and you should — it's how you improve — but it won't change that question's score.

Chrome says an application is stopping it from safely connecting

If the message mentions Fortinet, a school or office firewall is inspecting web traffic and Chrome refuses to trust it. This is not the app, and every secure site on that network is affected. Switch to mobile data or home Wi-Fi, or ask IT to allow interval-hero.app. Avoid tapping Advanced and proceeding: that lets the firewall read your login.

← Back to app