Frets vs Mr. Drum
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Frets
This app offers a precise chromatic tuner and an ear-training coach designed for musicians. It features real-time pitch detection, interval recognition, and sing-back exercises, all while keeping your data private on your device.
- Real-time chromatic tuner
- Interval recognition training
- Sing-back pitch scoring
- Chord quality identification
- Spaced repetition learning
- Progress tracking heatmap
- No login or ads
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Frets is a precise chromatic tuner and an ear-training coach in one calm, focused app. THE TUNER Real-time pitch detection with cents precision. Configurable A4 reference (440 Hz, 432 Hz, custom). Works for any instrument — guitar, violin, piano, voice, brass, woodwinds. EAR TRAINING Most ear-training apps are multiple-choice. Frets listens to you. Sing the note, play the note, and Frets grades you in cents. - Interval recognition — m2, M2, m3, M3, P4, P5 free; full set with Pro - Sing-back — Frets plays a note, you sing it, Frets scores your pitch - Chord quality — major, minor, diminished, augmented, dominant 7th and more - Spaced repetition that prioritizes your weakest intervals PROGRESS A 12-week heatmap of your training, a streak counter (with rest days — no guilt), and a clear view of which intervals you keep missing. NO LOGIN. NO ADS. NO TRACKING. Everything stays on your device. FREE & FULLY FEATURED Frets is free with a complete tuner and the core training modes. Frets Pro ($3.99, one-time) adds extended intervals, microtonal tuning (19-TET, 31-TET, just intonation), perfect-pitch drills, and a yearly stats view. No subscription. Ever. Built by an indie developer for musicians who want to actually hear better.
Mr. Drum
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Mr. Drum is a rhythm trainer for players who want to know how their timing actually feels. Play along to studio-quality drum patterns, and Mr. Drum measures where each of your hits lands against the beat - ahead of it (Push), behind it (Layback), or right on it (Center). PRACTICE TO REAL PATTERNS - 4-beat, 8-beat, 16-beat, swing and Latin styles, each with multiple variations - Tempo from a slow practice crawl up to full speed, with tap tempo - A count-in that follows the actual time signature of the pattern (3/4, 6/8, 12/8 and more) - Per-instrument mixer so you can pull the kick up or take the ride down - Haptic metronome and a visual flasher for practicing quietly SEE YOUR TIMING, NOT JUST HEAR IT - Play along with the microphone, or tap along on screen - both are analyzed the same way - Every session gives you an average offset in milliseconds, how consistent you were, and which beats you rush or drag the most - Tempo drift is separated from feel, so "playing behind the beat" is never confused with "slowing down" - Your Groove Profile builds up over time from your practice history TIME FEEL (PRO) Shift snare, ride, toms and percussion ahead of or behind the beat independently, and hear how a groove changes when the parts do not sit in the same place. YOUR AUDIO STAYS YOURS Mr. Drum listens through the microphone, but audio is never recorded or saved. Only the timing of each hit is kept, and it never leaves your device. There is no account, no sign-in, and no server.
Screenshots
Verdict
The clearest difference is ads: Frets at none against Mr. Drum's shown. Mr. Drum's advantage is iOS requirement (13.0 vs 26.0). On price, 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. Frets sells 1 one-off in-app purchase and Mr. Drum sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | Frets | Mr. Drum |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | — | Every 2 days |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 26.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 47 MB |
| Age rating | 4+ | 12+ |
| Developer | Enes Oz | TAEHEE JANG |
In-app purchases
Frets
- Frets Pro$3.99
Mr. Drum
- Pro Upgrade$5.99








