Clef Trainer vs Preludia
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Clef Trainer
Read full descriptionHide full description
Ready to read sheet music faster? Clef Trainer offers focused practice drills designed to significantly improve your speed and accuracy in recognizing musical notes on the staff. Our clean and simple interface makes practicing easy and effective. Get started right away: Key Features: Focused Note Practice: Quickly identify notes presented on the musical staff. Customizable Sessions: Choose your practice duration – select from timed sessions (1, 10, 30 minutes) or practice indefinitely with the 'Unlimited' option. Clef Selection: Train on Treble clef, Bass clef, or a mix of both (Confirm if users can select individually in Settings, if so, mention it). Intuitive Interface: See the note clearly displayed on the staff and identify it (Mention the input method if relevant, e.g., "using the on-screen piano keys"). Performance Tracking: Monitor your score and accuracy during practice sessions. Your Statistics: Track your progress over time in the dedicated statistics section. See how your note recognition skills improve! (You can elaborate slightly here if the stats section shows specific metrics like accuracy %, notes per minute etc.) [Your App Name] is perfect for: Beginner musicians learning to read notes. Students needing extra sight-reading practice. Anyone wanting a quick and straightforward tool to keep their note-reading skills sharp. Download Clef Trainer now and start mastering music note recognition today!
Preludia
Read full descriptionHide full description
Preludia is a piano practice support app for mobile devices, developed by Také (たけ) / Mordent Music. This app turns your smartphone/tablet into your most useful practice partner, monitoring and evaluating your piano playing to help you make progress. And you can use it with common digital pianos, as well as acoustic pianos with a MIDI output unit. Find Your Music, Feel Your Joy! [* Highlights *] • Evaluates piano performance from 4 criteria: 1. Attack Timing 2. Release Timing 3. Touch Strength 4. Sound Balance • Allows you to view detailed information for every individual note you play • Boosts and maintains your motivation with a play scoring system • Equipped with many useful practice support features • Supports the diverse playing styles unique to classical music [* Pro Mode *] This app is free to play, but you can upgrade to Pro Mode [paid] to unlock exclusive pieces and features for an even richer experience. • Playable Pieces (Number of pre-installed pieces) - Free Play:20 standard pieces + 3 training pieces with a total of 8 variations - Pro Mode:55 standard pieces + 9 traning pieces with a total of 33 variations (* DLC pieces are also available in addition to the pre-installed pieces. [currently 40+ pieces available]) • Pro Mode Exclusive Features - Expanded tempo adjustment range (50% - 150%) - Save and load your performance data - Playback loaded performance data - Ad-free (* Excluding the limited-time free play service for individually purchased pieces) [* Included Pieces *] The app includes over 50 pre-installed piano pieces by the various classical composers. (below) These pieces feature famous classical favorites and training exercises for finger practice. In addition to the pre-installed library, we also offer a growing selection of DLC pieces (paid / free). We will continue to release new DLC pieces on an ongoing basis! ##### List of Pre-installed pieces ##### • 1. Standard Pieces (55 pieces) - Bach: Invention No. 1 to 15 (+ No. 1 Variant) - Bach: Sinfonia No. 1 to 15 - Bach: The Well-Tempered Clavier: Book I No. 1 - Prelude, Fugue - Beethoven: 6 Ecossaises in E-flat major, WoO. 83 - Beethoven: Piano Sonata No. 8 "Pathétique" - 2nd, 3rd Mov. - Burgmüller: Candour, Arabesque, Ballad, Trotting from 25 Etudes - Chopin: Etude, Op. 10-5 - Chopin: Fantasie-Impromptu, Op. 66 - Chopin: Nocturne No. 2 - Chopin: Waltz No. 6, 19 - Daquin: Le Coucou - Debussy: Passpied from Suite Bergamasque - Grieg: Batterfly from Lyric Pieces Book III) - Handel: The Harmonious Blacksmith - Hanon: The Virtuoso Pianist No. 1, 2, 3, 4, 5, 39(Scale), 60(The Tremolo) - Joplin: Maple Leaf Rag - Mozart: Piano Sonata No. 11 - 3rd Mov. (Turkish March) - Mozart: Piano Sonata No. 16 - 1st Mov. - Petzold: Minuet in G major - Ravel: Menuet sur le nom d'HAYDN - Schubert: Moment Musical No. 3 - Schubert: Impromptu D 899/2 • 2. Traning Pieces (9 pieces with a total of 33 variations) - Czerny: 30 Etudes - No. 1 - Czerny: The School of Velocity - No. 1 - Hanon: The Virtuoso Pianist No. 1, 2, 3, 4, 5, 39(Scales in All Keys), 60(The Tremolo) [* Web Site *] https://preludia.mordentmusic.com/en/home_en/ [* Term of Use *] https://preludia.mordentmusic.com/en/terms-of-use_en/ [* Privacy Policy *] https://www.mordentmusic.com/en/privacy-policy_en/ [* Support *] https://preludia.mordentmusic.com/en/support_en/ ------------------------------------ Preludia © 2025 Také (たけ) / Mordent Music
Screenshots
Verdict
The clearest difference is update cadence: Clef Trainer at every 4 days against Preludia's every 10 days. 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
Both are free to download. Clef Trainer sells 1 one-off in-app purchase and Preludia sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Clef Trainer ships an update every 4 days, Preludia every 10 days. The most recent releases landed on October 1, 2026 and October 7, 2026 respectively.
| Parameter | Clef Trainer | Preludia |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days — better | Every 10 days |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 14.5 — better |
| Further details — not scored | ||
| Size | 29 MB | 246 MB |
| Age rating | 4+ | 4+ |
| Developer | Tuan Anh Nguyen | Keiji Takeishi |
In-app purchases
Clef Trainer
- Clef Trainer Plus$0.99
Preludia
- Les Barricades Mystérieuses$0.99
- Etude in F minor, Op. 25-2$0.99
- Preludes: Book I - No. 8$0.99
Show 7 moreShow fewer
- Golliwogg's Cakewalk$0.99
- Etude in A minor, Op. 25-11$1.49
- Prelude in Db major, Op. 28-15$1.49
- Etude Op. 65-3$1.49
- Prélude (Tombeau de Couperin)$1.49
- Aufschwung, Op. 12-2$1.99
- Piano Sonata No. 8 - 1st Mov.$2.99









