Keep Time vs CentiGrade Visual Tuner
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
Read full descriptionHide full description
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.
CentiGrade Visual Tuner
This app provides instant, ad-free tuning with a unique rolling trace feature for pitch practice. Its interface dynamically zooms as you approach the target note, offering multiple visual modes and presets for various instruments.
- Instant tuning on launch
- Rolling trace for pitch history
- Dynamic zoom interface
- Fluid wave visualizer
- Chromatic, Guitar, Bass presets
Read full descriptionHide full description
No Ads: Instant tuning as soon as you open the app. Rolling Trace: See a historical line of your pitch for perfect intonation practice. Dynamic Zoom: The interface adapts as you get closer to your target note. Multiple Modes: Toggle between a fluid wave visualizer and the rolling history roll. Presets: Support for Chromatic, Guitar, and Bass tuning.
Screenshots
Verdict
The clearest difference is price: Keep Time at Free against CentiGrade Visual Tuner's $0.99. CentiGrade Visual Tuner's advantage is rating (5.0 vs 4.0) and in-app purchases (none vs 1). On ratings volume, ads, 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
Keep Time is free to download; CentiGrade Visual Tuner costs $0.99 up front. Keep Time sells 1 one-off in-app purchase. CentiGrade Visual Tuner asks for nothing beyond the download.
CentiGrade Visual Tuner holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
Keep Time ships an update every 4 months, CentiGrade Visual Tuner every 4 days. Both last shipped on October 24, 2026.
| Parameter | Keep Time | CentiGrade Visual Tuner |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.0 (2 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 90.0% of reviews | — |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 4 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 3 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Justin Okun | PHILIP BRADLEY KING |
Customer experience
Keep Time
CentiGrade Visual Tuner
In-app purchases
Keep Time
- Feature Pack$1.99
CentiGrade Visual Tuner
No in-app purchases
Questions
Is Keep Time free?
Is CentiGrade Visual Tuner free?
Which has better reviews, Keep Time or CentiGrade Visual Tuner?
Do Keep Time or CentiGrade Visual Tuner have ads?
Which is updated more often, Keep Time or CentiGrade Visual Tuner?
Other comparisons















