StaveFlow vs Sine
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
StaveFlow
This app streamlines music lesson management for teachers and students. It combines class organization, note-taking, sheet music access, and progress tracking in a single platform. It supports various instruments and adapts to different studio needs.
- Class management
- Lesson notes
- Sheet music library
- Progress tracking
- Instrument adaptability
- Studio organization
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StaveFlow is the all-in-one app built for music teachers and their students — bringing class management, lesson notes, sheet music, and progress tracking into one beautifully simple space. Whatever you teach — piano, guitar, voice, strings, winds, or anything else — StaveFlow adapts to your studio. HOW THE SUBSCRIPTION WORKS - StaveFlow requires a paid subscription. New subscribers get a 1-month free trial. - Choose StaveFlow Premium Monthly ($4.99/month) or Yearly ($40.00/year). After the free trial, your subscription begins at the price of the plan you selected. - Payment is charged to your Apple ID at the end of the free trial, unless you cancel at least 24 hours before it ends. - Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. - Manage or cancel anytime in your Apple ID Account Settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.staveflow.com/privacy-policy.html
Sine
Develop your ear for music with interactive games and focused practice. Learn to identify notes and chords accurately through a progressive system designed for consistent improvement. Track your progress and earn badges as you master your auditory skills.
- Note and chord identification
- Progressive difficulty levels
- Interactive ear training games
- Detailed performance statistics
- Gamified progress tracking with badges
- Multiplayer ear training challenges
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Most people are told perfect pitch is you are born with. It is not. It is a skill, and like any skill it comes from short, honest practice. Sine is that practice, made pleasant enough that you keep coming back. HEAR IT. NAME IT. KNOW IT. A note plays. You pick the key. There is no reference note and nothing to compare against, so every answer has to come from your own ear. Between questions a wash of sound clears the last note away, which is the part every other trainer skips. ONE NOTE AT A TIME You start with two notes that sit far apart, then add one more, then one more. The white keys, then the black keys, then the chords that carry most songs. Every level is short, and you pass it when you are ready, not on a schedule. A COACH WHO SAYS LITTLE Sine is a ring-tailed lemur who listens with you. It notices a run of five, a note that used to slip, a slow answer that was still right. It never scolds. Your streak forgives a missed day, because life has those. INTERACTIVE GAMES FOR YOUR EAR Sine Duel races you to a note, or races a friend across the same phone. Defuse plays a run of notes and you tap it back before the fuse burns down. Tune-up plays a note a few hertz off and asks flat, sharp, or in tune. We add more and more games to our library weekly! EVERY ANSWER, KEPT Stats by note and by chord, the note you confuse each one with, and a shelf of badges for what you have done. ENCORE We have a generous free-tier, but if you'd like to support our growing team, Encore unlocks everything now and later. Prices vary by country. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period, and can be managed in your App Store account settings. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://learnsine.com/privacy
Screenshots
Verdict
The clearest difference is monetization model: Sine at freemium against StaveFlow's subscription. Sine also leads on ratings volume (628 vs 5) and update cadence (every 2 days vs every 4 days). On price, rating, ads and in-app purchases 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. StaveFlow sells 2 in-app purchases, starting at $4.99 per month and Sine sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for StaveFlow against 4.9 for Sine. That said, the two scores are not equally well evidenced: Sine has 628 ratings behind it against 5, so its average is the more settled of the two.
StaveFlow ships an update every 4 days, Sine every 2 days. The most recent releases landed on October 31, 2026 and November 1, 2026 respectively.
| Parameter | StaveFlow | Sine |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | 4.9 (628 ratings) |
| Positive reviews | — | 95.2% of reviews |
| Number of ratings | 5 | 628 — better |
| Update frequency | Every 4 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | Freemium — better |
| Best chart rank | — | #208 — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 65 MB | 136 MB |
| Age rating | 4+ | 4+ |
| Developer | JAVIER CONCEPCION JR | Ethan Liao |
Customer experience
StaveFlow
Sine
In-app purchases
StaveFlow
- Monthly Plan1 Month trial$4.991 Month
- Yearly Plan1 Month trial$40.001 Year
Sine
- Encore Monthly$1.991 Month
- Encore Yearly7 Days trial$14.991 Year
- Encore Lifetime$29.99









