Comparison

Musical Practice Timer vs Instrument String Log

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

Head to head
About

Musical Practice Timer

Features
Read full description

Your practice timer that actually listens. On-device AI-powered detection tracks only the minutes you're playing — breaks don't count. Hit your daily goal, build your streak. Stop counting breaks. Start measuring progress. Musical Practice Timer automatically tracks the time you actually spend playing — not the time your instrument sits silent. Put your phone on the piano, tap Start, and the app listens. When you play, the timer runs. When you stop, it pauses. It's that simple. Powered by on-device AI Using Google's YAMNet audio recognition model, the app detects when you're playing your instrument in real time — no internet connection required, and no audio is ever recorded or stored. Only the sound level is analyzed, entirely on your device. Built for every instrument Whether you play piano, guitar, violin, drums, trumpet, saxophone, flute, or cello, Musical Practice Timer has you covered. Select your instrument in Settings and the AI tunes itself to recognize it. Honest numbers, real motivation Practicing for 30 minutes with 10 minutes of tuning and rests shouldn't count as 30 minutes. Musical Practice Timer separates your actual playing time from your break time, so the number you see is one you've truly earned. Track your progress over time Daily practice heatmap — see your consistency at a glance Session history with interval timelines Monthly totals and best-session highlights Set a daily goal and watch the progress ring fill Practice with the screen off The app keeps detecting even when your iPhone is locked. Practice freely — check your time whenever you want. Privacy first No account. No cloud. No audio storage. Everything stays on your device.

About

Instrument String Log

Features
Read full description

Instrument String Log keeps string maintenance organized for every instrument you own. Record each string change, choose a common gauge set, and see which instruments are approaching their next replacement. Inventory tracking also helps you know whether a spare set is ready before rehearsal or a gig. FEATURES • Manage guitars, basses, ukuleles, violins, cellos, and other instruments • Choose common string gauges or enter a custom gauge • Record replacement date, reason, brand, product, and notes • See last change, next target date, days remaining, and replacement status • Track spare-string inventory and low-stock alerts • Review and edit complete replacement history • Add an instrument photo for quick identification • Optional local reminders based on usage frequency • English and Japanese interface, following the iPhone language setting Your instrument records and photos stay on your device. No account is required.

Screenshots

Musical Practice Timer4 screens
Instrument String Log4 screens

Verdict

The call

The clearest difference is ads: Musical Practice Timer at none against Instrument String Log's shown. Musical Practice Timer also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price and in-app purchases there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard3 real differences Ā· 3 level
Musical Practice Timer versus Instrument String Log: the parameters behind the verdict, then further details
ParameterMusical Practice TimerInstrument String Log
PriceFreeFree
Update frequencyDaily—
AdsNo — betterYes
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better17.0
Further details — not scored
Size32 MB7 MB
Age rating4+4+
DeveloperRui YaoHiroki Tani

In-app purchases

None

Musical Practice Timer

No in-app purchases

None

Instrument String Log

No in-app purchases

Questions

Is Musical Practice Timer free?
Musical Practice Timer is free to download, with no in-app purchases.
Is Instrument String Log free?
Instrument String Log is free to download, with no in-app purchases.
Do Musical Practice Timer or Instrument String Log have ads?
Instrument String Log shows ads; Musical Practice Timer does not.

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