Timegrapher X vs RelCheck
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Timegrapher X
This app analyzes the ticking sound of mechanical watches to measure accuracy, beat error, and amplitude. It offers real-time waveform and detailed diagram displays, as well as long-term data logging for in-depth analysis. Pro features include PDF reports, CSV export, and extended testing durations.
- Mechanical watch sound analysis
- Measures accuracy, beat error, amplitude
- Real-time waveform display
- Detailed diagram display
- Long-term data logger
- Save and share PDF reports (Pro)
- Export data as CSV (Pro)
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Timegrapher X analyzes the ticking sound of a mechanical watch to measure its accuracy rate, beat error, and amplitude. The app is specifically optimized to work with the Apple EarPods' headset microphone. Ideally, the headset microphone and the watch crown should be slightly pressed together, as this greatly improves the level of detail and diagram quality. The better the contact, the stronger the signal. https://timegrapher.app/ Timegrapher X consists of two separate modules (tabs): The "INSTANT" module shows how the watch is behaving in the short term, or "right now". It is very similar to a traditional timegrapher device, with the added benefits of a real-time waveform display and a high-detail diagram display. The "LONG TEST" module is a graphical data logger, which helps you observe the long-term behavior of a watch. Various chart indicators are available, such as average rate, moving rate history, rate drift over time, and more. Long-term measurements for up to 12 hours can be conducted for in-depth analysis of the watch being tested. Timegrapher X Pro (in-app upgrade) provides these additional features: • Save and share branded, printable PDF reports for each measurement • Export raw measurement data as a .csv file for spreadsheet analysis • Conduct long-term measurements for up to 120 hours For demo videos and documentation, please visit: https://timegrapher.app/
RelCheck
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RelCheck helps you maintain regular contact with the people who matter. When the mind gets easily distracted, relationships can quietly drift. RelCheck ensures they do not. Set how often you want to check in with each person. When the time comes, RelCheck reminds you. Reach out in your preferred way—call, message, or any channel you choose—then mark it as done and continue your day, with peace of mind. Features list: - Fit your needs: add your contacts and choose check-in intervals for each - Never forget: timely reminders - Optional daily quick check-in mode - Clean, quick, iOS-style, distraction-free experience - Privacy first: we don't need your data—keep it - Seamless iCloud backups and sync across devices - Works on iOS, iPadOS and macOS - Light and dark modes supported - English and French translations available Designed with a simple goal: staying present in your relationships.
Screenshots
Verdict
The clearest difference is price: RelCheck at Free against Timegrapher X's $29.99. RelCheck also leads on in-app purchases (none vs 1). Timegrapher X's advantage is update cadence (every 2 months vs every 8 months) and chart position (#181 vs unranked). On 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
RelCheck is free to download; Timegrapher X costs $29.99 up front. Timegrapher X sells 1 one-off in-app purchase. RelCheck asks for nothing beyond the download.
Timegrapher X ships an update every 2 months, RelCheck every 8 months. Both last shipped on October 24, 2026.
| Parameter | Timegrapher X | RelCheck |
|---|---|---|
| Price | $29.99 | Free — better |
| Rating | 4.2 (23 ratings) — better | — |
| Positive reviews | 70.0% of reviews | — |
| Number of ratings | 23 — better | — |
| Update frequency | Every 2 months — better | Every 8 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #181 — better | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | ONYX Apps | Anne Ferret |
In-app purchases
Timegrapher X
- Timegrapher X Pro$29.99
RelCheck
No in-app purchases









