Black Clock vs Watch Tuner Timegrapher
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Black Clock
A straightforward analog clock application offering a clean and simple design. It displays time with classic hands on a dial, providing an uncluttered visual experience for users who prefer traditional timekeeping.
- Simple design
- Clean interface
- Analog display
- Classic clock hands
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- simple, clean, analog clock
Watch Tuner Timegrapher
This application analyzes the performance of mechanical watches by using your device's microphone to record ticking sounds. It generates a frequency diagram and provides measurements for rate, beat error, amplitude, and beats per hour.
- Frequency diagram display
- Measures rate accuracy
- Measures beat error
- Measures amplitude
- Measures beats per hour (BPH)
- Uses device microphone
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Watch Tuner Timegrapher is an app for testing mechanical watches — both automatic and manual winding. It displays a frequency diagram of your watch and measures the rate, beat error, amplitude, and beats per hour (BPH). The app uses your device’s built-in microphone or a headset mic to record the audible ticks of the watch. For best results, use the app in a quiet environment. Background noise can affect accuracy — complete silence works best, though the built-in noise-cancelling algorithm can filter out minor sounds. The microphone must be in contact with the watch to clearly capture the ticking sound; ideally, place it against the watch’s crown during recording.
Screenshots
Verdict
The clearest difference is price: Black Clock at $4.99 against Watch Tuner Timegrapher's $7.99. Black Clock also leads on iOS requirement (13.0 vs 15.6). Watch Tuner Timegrapher's advantage is update cadence (every 4 months vs every 9 months) and review sentiment (68% vs 57%). On ads, 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
Black Clock costs $4.99 and Watch Tuner Timegrapher $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Black Clock ships an update every 9 months, Watch Tuner Timegrapher every 4 months. The most recent releases landed on September 9, 2026 and September 24, 2026 respectively.
| Parameter | Black Clock | Watch Tuner Timegrapher |
|---|---|---|
| Price | $4.99 — better | $7.99 |
| Rating | — | 3.8 (80 ratings) — better |
| Positive reviews | 57.1% of reviews | 68.4% of reviews — better |
| Number of ratings | — | 80 — better |
| Update frequency | Every 9 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 0 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | MacMedia | Bartlomiej Swiatek |
Customer experience
Black Clock
Watch Tuner Timegrapher
Bugs and requests
Black Clock
Not enough reviews yet to summarise bugs or requests.
Watch Tuner Timegrapher
Reported bugs
11 issues- App crashes on certain iOS versions (iPhone X with iOS 14.6)
- Incompatible with older devices (iPod Touch 6, iOS 8.4)
- Blank white screen on some devices
- Quality reporting inconsistency between live reading and saved history
- Cannot store more than 16 history files (save button grays out)
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- Doesn't work properly with Samsung headsets on iPad
- External microphone recognized but won't provide/analyze data
- Auto-detect mode fails to recognize BPH correctly
- App becomes unresponsive and requires phone restart
- Incompatibility with latest iOS versions for audio spectrum analysis
- Microphone collection starts immediately on app launch
Requested features
13 requests- Audio monitoring function to optimize microphone placement before measuring
- Audible ticking sound output (like professional models)
- Extended beat rate range to include mechanical clocks
- Only request microphone permissions when actually measuring
- History feature to save and track measurements over time
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- Ability to share graphs as photos or export to email
- Larger display for complete timestamp visibility
- Increased history file storage (currently limited to 16 files)
- Korean language support
- Japanese language support
- Dedicated hardware microphone option
- Better auto-detection for BPH to avoid manual input
- Ability to add watch information and photos to measurements
In-app purchases
Black Clock
No in-app purchases
Watch Tuner Timegrapher
No in-app purchases
Questions
Is Black Clock free?
Is Watch Tuner Timegrapher free?
Do Black Clock or Watch Tuner Timegrapher have ads?
Which is updated more often, Black Clock or Watch Tuner Timegrapher?
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