Keep Time vs RhythmForge
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Keep Time
This application provides musicians with a visual metronome to enhance their playing. It offers adjustable tempo, customizable sounds and colors, and various subdivision options. Advanced features for rhythm simulation are available through in-app purchases.
- Adjustable speed with touch gestures
- 4 metronome sound options
- 7 color choices for visualizer
- Sub-division options (8th, 16th, triplets)
- Configurable visualizer beats per measure
- Apple Watch remote tempo adjustment
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Are you a musician who wants to improve your playing? Metronomes are a great way to work on your speed, timing, and accuracy, no matter what instrument you play! Keep Time is a free, fully functioning metronome with a strong visual component. Featuring: - Adjustable speed using touch gestures. You can tap the screen to synchronize it with your tempo. - 4 different metronome sounds - 7 different color choices for the visualizer and interface, including a "rainbow" option - Sub-division options such as: 8th notes, 16th notes, triplets, and shuffles - Visualizer configurable to display 2-8 beats per measure - Advanced features such as Auto Adjust and Simulate Human Rhythm available via In-App purchase - Support for iPad multitasking - Remote tempo adjustment using Apple Watch Directions: Keep Time is operated by using the menu at the bottom of the screen. Start and pause the metronome by using the "Play" button on the far left. Use the "Settings" menu to change the speed, sounds, and colors. Push the "Visualizer" button to remove the settings menu overlay. Finally, the "More" button provides technical information and links to the entire Okunarium Labs catalog.
RhythmForge
This app listens to your playing in real time, scoring your timing accuracy across multiple tiers. It provides detailed analysis of your performance, helping you identify and improve areas where you rush or drag. With numerous built-in challenges and practice modes, it acts as a personal coach for musicians.
- Real-time onset detection and scoring
- Six-tier accuracy grading
- Combo multipliers and personal best tracking
- Rushing/dragging analysis
- Timing precision scatter plot
- Per-device latency calibration
- 40+ built-in challenges
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Most metronomes just count. RhythmForge listens back. Play along to the beat and the app hears you in real time. Every hit is measured, every drift is shown, every session tells you exactly where your timing is strong and where it's not. Your phone becomes a practice coach. HOW IT WORKS Pick a challenge. Set your tempo. Play. RhythmForge scores every beat across six accuracy tiers — Perfect, Great, Good, Okay, Weak, Missed. Build combos with consecutive Perfects for bonus points. Beat your personal best. See exactly where you rushed or dragged. 63 built-in challenges spanning rudiments (singles, doubles, paradiddles, rolls, gallops), grooves, world rhythms (tresillo, son clave, rumba, cáscara, mozambique, bossa nova, samba, baião, bembé), compound and odd meters, and odd subdivisions. From first-week beginner to serious drummer. WHAT MAKES IT DIFFERENT • Real-time onset detection — the app hears your strokes and scores them instantly • Six-tier accuracy grading based on millisecond timing • Combo multipliers and personal-best tracking that make practice addictive • Rushing / dragging analysis per session — know your tendencies • Timing precision scatter plot and beat distribution charts • Per-device latency calibration that auto-corrects AirPods drift • Works with drum pads, snare, hand percussion, claves, djembe • 20–360 BPM, all standard subdivisions, accents • True dark-first design, optimized for OLED FREE FOREVER • Full metronome — every subdivision, tempo ramp, ghost measures • Every click sound • Unlimited free practice with live timing feedback • Every analysis screen, unblurred — distribution, precision, rushing and dragging • Every challenge in the library, playable. Nothing is locked • 6 minutes of challenge time a day, spent on whatever you choose • Your last 7 sessions No challenge is behind the subscription. What's metered is time: 6 minutes a day, topping back up as the day goes — four times faster while you're practicing. Run out and any challenge still gives you a free 25-second run, as many as you like. Tempo ramp and ghost measures are premium features in competing apps. Here they're free, forever. The metronome you'd pay for, included. RHYTHMFORGE PRO Unlock everything with a 7-day free trial: • Unlimited challenge time — the meter disappears • Pattern builder — create your own rhythms, loop them, score them • Triplet and sixteenth targets — play any subdivision over any click • Per-beat pattern editing • Full session history, unlimited FOR WHO Drummers. Percussionists. Guitarists who play rhythmically. Music students. Teachers. Anyone who knows that timing is the foundation of everything musical — and wants to actually measure where theirs stands. Privacy: RhythmForge never uploads your audio. All timing detection runs on-device. Analytics are anonymous and aggregated. Requires iOS 17 or later. Microphone permission required for timing feedback. Terms of Service: https://rhythmforge.app/terms
Screenshots
Verdict
The clearest difference is rating: Keep Time at 4.0 against RhythmForge's 1.0. Keep Time also leads on device support (4 vs 1) and iOS requirement (13.0 vs 17.0). RhythmForge's advantage is update cadence (fortnightly vs every 4 months). On price, ratings volume, 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. Keep Time sells 1 one-off in-app purchase and RhythmForge sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Keep Time holds the better App Store score, 4.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Keep Time ships an update every 4 months, RhythmForge fortnightly. The most recent releases landed on October 6, 2026 and October 13, 2026 respectively.
| Parameter | Keep Time | RhythmForge |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 90.0% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Every 4 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 3 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Justin Okun | Florian Preknya |
Customer experience
Keep Time
RhythmForge
In-app purchases
Keep Time
- Feature Pack$1.99
RhythmForge
- RhythmForge PRO Monthly7 Days trial$4.991 Month
- RhythmForge PRO Annual7 Days trial$34.991 Year
- RhythmForge PRO Lifetime$74.99









