Comparison

Keep Time vs Tone Gen Studio

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

Head to head
About

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.

Highlights
  • 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
Features
Read 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.

About

Tone Gen Studio

Generate precise audio frequencies, conduct sweep tests, and analyze sound with a built-in microphone tuner and RTA analyzer. This toolkit is designed for musicians and audio engineers needing accurate tone and measurement tools.

Highlights
  • Pure tone generator with custom frequency
  • Preset tone pads
  • Sweep generator
  • Noise profiles (white, pink, brown)
  • Binaural beats
  • Mic tuner with real-time display
  • RTA analyzer
Features
Read full description

Test speakers, find frequencies, tune instruments, and keep time during practice with Tone Gen Studio. Generate tones, sweeps, and noise, explore your microphone input with the tuner and spectrum analyzer, or practice with the built-in metronome. Tone generation and speaker testing - Set a custom frequency or choose a preset tone pad. - Select sine, square, sawtooth, or triangle waveforms. - Run linear, exponential, or stepped frequency sweeps. - Generate white, pink, and brown noise. - Set burst on and off durations for pulsed tones. - Adjust binaural carrier and beat frequencies for headphone playback. Tuning and audio analysis - View the detected note, frequency, and cents with the microphone tuner. - Explore input levels with a real-time spectrum analyzer and 1/3-octave RTA bands. Metronome and practice - Set a tempo from 20 to 300 BPM or use tap tempo. - Choose time signatures, subdivisions, accents, and five click sounds. - Practice with swing, polyrhythms, gradual tempo ramps, and random mute. - Use a count-in and practice timer. Start at a low volume and adjust gradually. Binaural playback requires headphones. Speaker response and microphone measurements depend on your device and connected audio equipment. For musicians, audio engineers, educators, and anyone working with sound on iPhone and iPad.

Screenshots

Keep Time4 screens
Tone Gen Studio4 screens

Verdict

The call

The clearest difference is price: Keep Time at Free against Tone Gen Studio's $0.99. Keep Time also leads on device support (4 vs 2) and iOS requirement (13.0 vs 18.6). Tone Gen Studio's advantage is rating (5.0 vs 4.0) and in-app purchases (none vs 1). On ratings volume and ads 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

CostPrice · In-app purchases · Ads · Monetization

Keep Time is free to download; Tone Gen Studio costs $0.99 up front. Keep Time sells 1 one-off in-app purchase. Tone Gen Studio asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Tone Gen Studio holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Keep Time ships an update every 4 months, Tone Gen Studio every 6 weeks. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

Scorecard7 real differences · 3 level
Keep Time versus Tone Gen Studio: the parameters behind the verdict, then further details
ParameterKeep TimeTone Gen Studio
PriceFree — better$0.99
Rating4.0 (1 ratings)5.0 (1 ratings) — better
Positive reviews90.0% of reviews—
Number of ratings11
Update frequencyEvery 4 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS13.0 — better18.6
Further details — not scored
Size3 MB5 MB
Age rating4+4+
DeveloperJustin OkunScott Manley

Customer experience

Keep Time

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews10 reviews
Positive90.0%
Neutral0.0%
Negative10.0%

Tone Gen Studio

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Keep Time

One-time1
  • Feature Pack$1.99
None

Tone Gen Studio

No in-app purchases

Questions

Is Keep Time free?
Keep Time is free to download, with in-app purchases available.
Is Tone Gen Studio free?
Tone Gen Studio costs $0.99, with no in-app purchases.
Which has better reviews, Keep Time or Tone Gen Studio?
Tone Gen Studio is rated higher. Keep Time averages 4.0 out of 5 from 1 ratings, while Tone Gen Studio averages 5.0 from 1 ratings.
Do Keep Time or Tone Gen Studio have ads?
Neither Keep Time nor Tone Gen Studio shows ads.
Which is updated more often, Keep Time or Tone Gen Studio?
Keep Time ships an update every 4 months, and Tone Gen Studio every 6 weeks. Most recently, Keep Time was updated on October 6, 2026 and Tone Gen Studio on October 7, 2026.

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