Comparison

Singalong Solfege vs IDOUDO

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

Head to head
About

Singalong Solfege

Enhance your musical abilities with this comprehensive ear training and sight-singing application. Practice pitch accuracy, rhythm, and music reading with a vast library of melodies and instrumental accompaniment.

Highlights
  • Sight-singing and instrumental reading training
  • Guide vocals and piano accompaniment
  • Over 290 curated melodies
  • Support for SATB voices
  • Transposing instrument support
  • Printable PDF sheet music (premium)
Features
Read full description

Singalong Solfège is a complete training app for sight-singing and instrumental reading, featuring guide vocals, piano accompaniment, and over 300 curated melodies to build pitch accuracy, rhythm, and music reading skills. Intro through Lv. 3 are fully free — including slow tempo playback, PDF and MP3 downloads. Includes solfège etudes by Nikolay Ladukhin and Giuseppe Concone, plus classical works by composers like Bach, Mozart, Beethoven, Fauré, and Debussy. Choose between Fixed-Do and Movable-Do, with Chromatic and Non-chromatic syllable options. Supports Treble, Alto, Tenor, and Bass clefs, plus B-flat transposed scores available for download. Ideal for singers and instrumentalists alike — improve intonation, rhythm, and sight-reading. Premium Features (available with subscription): - Unlock Lv. 4 and above, plus extra classical pieces Works on all iOS devices. Optimized for iOS 16.6 or later. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

IDOUDO

Features
Read full description

IDOUDO is a practice app for quickly reading notes on the staff with movable Do in each key. 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 IN VERSION 1.0 • 1 Note • 2 Notes • 1 Triad • 1 Seventh Chord 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 • 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 permanently with a separate one-time in-app purchase for each drill. There is no subscription. No ads are displayed, and no account registration is required. Profiles and practice records are stored on your device.

Screenshots

Singalong Solfege4 screens
IDOUDO4 screens

Verdict

The call

Singalong Solfege and IDOUDO are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Singalong Solfege sells 5 in-app purchases, starting at $4.99 per month and IDOUDO sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Singalong Solfege versus IDOUDO: the parameters behind the verdict, then further details
ParameterSingalong SolfegeIDOUDO
PriceFreeFree
Rating4.5 (29 ratings) — better—
Positive reviews77.8% of reviews—
Number of ratings29 — better—
Update frequencyMonthly—
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.6 — better17.0
Further details — not scored
Size314 MB2 MB
Age rating4+4+
DeveloperYASUHIRO SEKINEKosuke Mawatari

In-app purchases

5 purchases

Singalong Solfege

Subscriptions2
  • Monthly Subscription$4.991 Month
  • Solfege Yearly Subscription$49.991 Year
One-time3
  • Enable Slow Tempo$0.99
  • Unlock Melodies$5.99
  • Saving printable pdfs$11.99
4 purchases

IDOUDO

One-time4
  • Unlock All Keys: 1 Note$1.99
  • Unlock All Keys: 2 Notes$1.99
  • Unlock All Keys: 1 Triad$1.99
Show 1 more
  • Unlock Keys: 1 Seventh Chord$1.99

Questions

Is Singalong Solfege free?
Singalong Solfege is free to download, with in-app purchases available.
Is IDOUDO free?
IDOUDO is free to download, with in-app purchases available.
Do Singalong Solfege or IDOUDO have ads?
Neither Singalong Solfege nor IDOUDO shows ads.

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