Comparison

StaveFlow vs Sine

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

Head to head
About

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.

Highlights
  • Class management
  • Lesson notes
  • Sheet music library
  • Progress tracking
  • Instrument adaptability
  • Studio organization
Features
Read full description

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

About

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.

Highlights
  • Note and chord identification
  • Progressive difficulty levels
  • Interactive ear training games
  • Detailed performance statistics
  • Gamified progress tracking with badges
  • Multiplayer ear training challenges
Features
Currently charting
Read full description

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

StaveFlow4 screens
Sine4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 7 level
StaveFlow versus Sine: the parameters behind the verdict, then further details
ParameterStaveFlowSine
PriceFreeFree
Rating5.0 (5 ratings) — better4.9 (628 ratings)
Positive reviews—95.2% of reviews
Number of ratings5628 — better
Update frequencyEvery 4 daysEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFreemium — better
Best chart rank—#208 — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.4 — better
Further details — not scored
Size65 MB136 MB
Age rating4+4+
DeveloperJAVIER CONCEPCION JREthan Liao

Customer experience

StaveFlow

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Sine

All ratings628 ratings
Positive98.9%
Neutral0.3%
Negative0.8%
Written reviews42 reviews
Positive95.2%
Neutral2.4%
Negative2.4%

In-app purchases

2 purchases

StaveFlow

Subscriptions2
  • Monthly Plan1 Month trial$4.991 Month
  • Yearly Plan1 Month trial$40.001 Year
3 purchases

Sine

Subscriptions2
  • Encore Monthly$1.991 Month
  • Encore Yearly7 Days trial$14.991 Year
One-time1
  • Encore Lifetime$29.99

Questions

Is StaveFlow free?
StaveFlow is free to download, with in-app purchases available.
Is Sine free?
Sine is free to download, with in-app purchases available.
Which has better reviews, StaveFlow or Sine?
StaveFlow is rated higher. StaveFlow averages 5.0 out of 5 from 5 ratings, while Sine averages 4.9 from 628 ratings.
Do StaveFlow or Sine have ads?
Neither StaveFlow nor Sine shows ads.
Which is updated more often, StaveFlow or Sine?
StaveFlow ships an update every 4 days, and Sine every 2 days. Most recently, StaveFlow was updated on October 31, 2026 and Sine on November 1, 2026.

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