Comparison

IDOUDO vs Piano Note Reading Drill

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

IDOUDO

Features
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Read notes fast in movable Do. Name the notes you hear. Sing famous melodies in all 12 keys. IDOUDO is a solfège app for practicing all three, a few minutes a day — for jazz and pop sessions, playing by ear, and reading parts in choirs and ensembles, so a key change never throws you off. Ear Training and Melody Shadowing are new in version 1.1. Answer each displayed note using the Do, Re, Mi, Fa, Sol, La, and Ti buttons. When the key changes, the same position on the staff has a different movable-Do syllable. Practice this essential movable-Do skill repeatedly in all 12 keys. In addition to treble and bass clefs, IDOUDO supports the alto clef, a feature rarely found in music practice apps. It is useful both for the daily practice of musicians who read alto-clef music and for those who want to become more fluent in every key as they expand into jazz and pop sessions. If you are just beginning to read staff notation, start with the key of C. In C, Do–Re–Mi and C–D–E correspond directly, so you can also use IDOUDO to practice the fundamentals of reading standard notation. DRILLS Reading • Single notes: 1 Note, 2 Notes • 1 Triad • 1 Seventh Chord Listening • Ear training: 2, 3, and 4 notes • Melody Shadowing: Major set 1, Major set 2, Minor set 1 EAR TRAINING After a Do-Mi-Sol chord, listen to the notes and name them in movable Do. The answer buttons form a "staircase" from low on the left to high on the right, so you answer the pitch height too. A foundation for playing by ear. MELODY SHADOWING Hum short melodies from famous pieces in movable Do while the key changes. There is no scoring. Each time the key changes, an I–ii–V–I cue sets the new key's Do in your ear, and Do keeps sounding as the accompaniment while you sing. Songs: Twinkle Twinkle Little Star, Canon, When the Saints Go Marching In, Ode to Joy, Swing Low, Sweet Chariot, Furusato, Sakura Sakura, Fate (Symphony No. 5), and Kojo no Tsuki (minor keys are read from La). It is also good practice for the pentatonic and major scales. KEY FEATURES • Practice in all 12 keys • Treble and bass clefs, plus the alto clef used by viola • Note ranges for piano, guitar, violin, viola, cello, wind instruments, voice, and more • Beginner, Intermediate, Advanced, and Custom ranges • Fast 10-question rounds • Average response time, mistakes, and personal-best records • Pin the drills you practice to the top of Home • Built-in know-how, including how to practice each drill • Up to 50 local profiles • Shareable result cards and progress • Light and Dark Mode READ CHORDS WITH MOVABLE DO For triads and seventh chords, answer chord tones from bottom to top. The result also shows the chord symbol and Roman-numeral degree name. NEW TO STAFF NOTATION? The in-app Getting Started with Staff Notation guide explains why the key of C is a good place to begin, includes a quick note-reference chart, and shows how to use the app for classical music, ensemble playing, and sessions, with a suggested practice path. PRICING Keys C and G are free in every drill. The other 10 keys can be unlocked in either of two ways: • A one-time in-app purchase for each drill • All Drills, an auto-renewable subscription (monthly with a 1-month free trial, or yearly) that also includes drills added in the future. Prices are shown in the app and on the App Store. The subscription renews automatically at the same price unless canceled at least 24 hours before the end of the current period. Payment is charged to your Apple Account. Manage or cancel it in Settings > [your name] > Subscriptions. The free trial is available once, on the monthly plan; cancel at least 24 hours before it ends and you won't be charged. No ads are displayed, and no account registration is required. Profiles and practice records are stored on your device. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Piano Note Reading Drill

Features
Read full description

“Looking for a simple way to improve your note-reading skills?” This app is made for you. 【Features】 - Practice note reading in a fun, game-like way - Simple controls — just tap the piano keys - Train step by step by narrowing the note range - Dark Mode support

Screenshots

IDOUDO4 screens
Piano Note Reading Drill4 screens

Verdict

The call

The clearest difference is update cadence: Piano Note Reading Drill at every 3 days against IDOUDO's every 3 weeks. IDOUDO's advantage is iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. IDOUDO sells 12 in-app purchases, starting at $2.99 per month and Piano Note Reading Drill sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

IDOUDO ships an update every 3 weeks, Piano Note Reading Drill every 3 days. Both last shipped on October 24, 2026.

Scorecard2 real differences · 4 level
IDOUDO versus Piano Note Reading Drill: the parameters behind the verdict, then further details
ParameterIDOUDOPiano Note Reading Drill
PriceFreeFree
Update frequencyEvery 3 weeksEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better26.0
Further details — not scored
Size3 MB18 MB
Age rating4+4+
DeveloperKosuke MawatariRuku Kobayashi

In-app purchases

12 purchases

IDOUDO

Subscriptions2
  • All Drills (Monthly)1 Month trial$2.991 Month
  • All Drills (Yearly)$19.991 Year
One-time10
  • Unlock All Keys: Ear 2 Notes$1.99
  • Unlock All Keys: Ear 3 Notes$1.99
  • Unlock All Keys: Ear 4 Notes$1.99
Show 7 more
  • Unlock All Keys: Major Set 1$1.99
  • Unlock All Keys: Minor Set 1$1.99
  • Unlock All Keys: Major Set 2$1.99
  • Unlock All Keys: 1 Note$1.99
  • Unlock All Keys: 2 Notes$1.99
  • Unlock All Keys: 1 Triad$1.99
  • Unlock Keys: 1 Seventh Chord$1.99
3 purchases

Piano Note Reading Drill

One-time3
  • Snack Tip$0.49
  • Coffee Tip$2.99
  • Dinner Tip$5.99

Questions

Is IDOUDO free?
IDOUDO is free to download, with in-app purchases available.
Is Piano Note Reading Drill free?
Piano Note Reading Drill is free to download, with in-app purchases available.
Do IDOUDO or Piano Note Reading Drill have ads?
Neither IDOUDO nor Piano Note Reading Drill shows ads.
Which is updated more often, IDOUDO or Piano Note Reading Drill?
IDOUDO ships an update every 3 weeks, and Piano Note Reading Drill every 3 days. Most recently, IDOUDO was updated on October 24, 2026 and Piano Note Reading Drill on October 24, 2026.

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