Clef vs Notespawn
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Clef
Read full descriptionHide full description
Clef: Sight Reading Trainer Connect written notes, note names and piano keys through short, repeatable drills. Choose your reading level and session length, then start practising. New beginners start with a small group of C-position notes and patterns. Short explanations introduce unfamiliar concepts, and help stays available during practice. Spaced repetition uses your answers to schedule what to revisit. READING - Note Naming: treble and bass - Grand Staff: alternate between treble and bass - Ledger Notes: notes above and below the staff - Intervals: the distance between two notes - Key Signatures: sharps and flats AT THE KEYBOARD - Keyboard Mapping: find the named note - Five-Finger Patterns: repeat short patterns and read-and-play exercises - Triads and Inversions: recognise and play chord shapes - Seventh Chords: practise four-note chords - Major and Minor Scales: follow note patterns and fingering guides - Arpeggios: practise broken chords - Hands Together: coordinate paired notes Fifteen focused practice tracks, with daily mixed sessions and individual drills. PLAY ON SCREEN OR WITH MIDI Use the on-screen piano and answer buttons, or connect a compatible MIDI keyboard. Follow the note and register instructions for each drill. Note names can use letters or do-re-mi. For played patterns, βWatch & listenβ demonstrates the exercise; βYour turnβ returns to practice. Clef checks the notes you enter. Fingering guides are references, not a measurement of your physical technique. SHORT SESSIONS, USEFUL FEEDBACK Choose three or five minutes, then continue practising from the results screen when you want to keep going. Review your answers, clean recall and best run, with an estimated recall forecast for the items practised in that session. Adjust your reading level, session length and practice goals in Settings. Paper, ink and a single gold accent keep the focus on the music. Practice history stays on your device. No account is required. FREE AND FULL ACCESS Treble and bass focused reading practice and one mixed daily session per calendar day are free. Full access is available through annual or monthly subscriptions, or a one-time lifetime purchase. Prices and any eligible introductory offer are shown before purchase. Existing owners of the earlier one-time unlock retain their access. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://clefdrills.com/privacy/
Notespawn
Read full descriptionHide full description
Notespawn generates unlimited piano sight-reading exercises that actually sound like music - not random notes on a staff. Most sight-reading apps hand you a fixed library that runs out, or generate note-soup that no composer would write. Notespawn builds every exercise from real harmonic progressions first, then shapes the melody and rhythm around them. The result reads like repertoire: phrases resolve, cadences land, and your eyes learn patterns that show up in actual music. DIAL IN YOUR LEVEL - Difficulty levels from beginner to advanced - Single line, hands together, or chord textures on the grand staff - Choose key signatures, time signatures, and tempo - Modulation control for advanced practice PRACTICE SMARTER - Every exercise is brand new, so you can never memorize your way out of reading - Note-by-note practice mode listens to your instrument through the microphone and checks what you play, right at the piano - no MIDI cable required - Built-in metronome and playback so you can hear the exercise and check yourself - Seeded generation: share a seed and any two players get the identical exercise, perfect for teachers assigning the same page to a whole studio - Export to PDF for printing or MIDI for your favorite apps BUILT FOR PIANISTS Designed around how piano reading actually works: two staves, two hands, voicings that fit under real fingers. No account. No ads. No tracking. Open the app and read.
Screenshots
Verdict
The clearest difference is in-app purchases: Notespawn at none against Clef's 2. Notespawn also leads on iOS requirement (15.0 vs 26.0). Clef's advantage is update cadence (every 3 days vs every 2 months). On price, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Clef sells 2 one-off in-app purchases. Notespawn asks for nothing beyond the download.
Clef ships an update every 3 days, Notespawn every 2 months. The most recent releases landed on October 10, 2026 and October 9, 2026 respectively.
| Parameter | Clef | Notespawn |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days β better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No β better |
| Devices | iPhone, iPad | iPhone, iPad, iPod β better |
| Requires iOS | 26.0 | 15.0 β better |
| Further details β not scored | ||
| Size | 67 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Mel Owen | Thaddeus Arndt |
In-app purchases
Clef
- Unlock Clef$9.99
- Clef Lifetime$99.99
Notespawn
No in-app purchases







