Grothm vs simple loop machine
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Grothm
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Grothm is a structured practice tracker with a professional metronome built in. Plan sessions, automate tempo changes, and track time, BPM, goals, and progress over time. TRAIN WITH A PLAN Build focused routines for warm-ups, rudiments, speed, technique, and repertoire. AUTOMATE TEMPO TRAINING Use multiple automatic tempo modes to develop speed without adjusting the metronome by hand. TRACK EVERY SESSION Automatically record practice time, tempo, goals, and completion history. SEE YOUR PROGRESS Review growth curves and time-range reports to understand how your practice develops. PROFESSIONAL METRONOME Train with precise timing, advanced subdivisions, dotted notes, automatic tempo changes, and speeds up to 350 BPM. FOCUSED CYBERPUNK DESIGN A clear, immersive interface built for focused practice. PRIVATE AND DISTRACTION-FREE No account. No ads. No internet required. Your data stays on your device. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
simple loop machine
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simple loop machine is a straightforward loop-style music app: record up to eight samples from the microphone, assign them to pads, then play, loop, reverse, trim, and scratch. No DAW-style complexity—great for ideas, practice, and live sketches. Features • 8-pad recording - Free mode: hold an empty pad to record; release to stop - Fixed mode: set BPM and bars, tap an empty pad to record a fixed length • Play/stop, loop, reverse playback • Waveform view with trim handles • Zoom (full waveform / selection range) • Volume and pitch per pad • Scratch strip (drag left and right) • Mix recording: capture pad playback into one mix; play, export, or delete • Settings: default record mode, default BPM/bars for fixed mode, delete all pads • In-app languages: Japanese, English, Simplified Chinese, Traditional Chinese, Korean Privacy & data • Samples and mixes are stored only on your device • No account required • Microphone is used only for recording to pads • Export uses the system share sheet (Files, AirDrop, etc.) Notes • Use caution with headphones or speakers—levels can be loud • Microphone permission is required on first launch • A real device is recommended for recording (simulator has no mic) Support: contact us via the Support URL on the store listing.
Screenshots
Verdict
The clearest difference is in-app purchases: simple loop machine at none against Grothm's 1. simple loop machine also leads on update cadence (every 4 days vs every 3 weeks). Grothm's advantage is ads (none vs shown). On price, device support and iOS requirement 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. Grothm sells 1 one-off in-app purchase. simple loop machine asks for nothing beyond the download.
Grothm ships an update every 3 weeks, simple loop machine every 4 days. Both last shipped on November 5, 2026.
| Parameter | Grothm | simple loop machine |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 4 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18 | 17.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | 雒敏 郭 | GoateeAllstars |
In-app purchases
Grothm
- Grothm Pro$2.99
simple loop machine
No in-app purchases









