x vs Stopwatch
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
x
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The x-IMU3 mobile app can be used to view real-time measurements from multiple devices in real-time, and log streamed data to CSV for use with applications such as Excel, MATLAB, and Python.
Stopwatch
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A clean stopwatch with named laps — best split highlighted green, worst red — for runners, lifters and timers. - Giant readable digits across the gym - Tap to lap, name each split - Best lap green, worst red, auto - Lap export to CSV - Custom interval beeps and themes Who it's for For runners, swimmers and lifters timing sets, intervals and personal bests. Subscription Premium is available as a weekly, monthly or yearly auto-renewing subscription, or as a one-time Lifetime purchase. Subscriptions auto-renew unless you cancel at least 24 hours before the end of the period. You can cancel anytime in your Apple ID Subscription Settings. Payment is charged to your Apple ID. Privacy: everything stays on your device by default. No analytics SDKs, no cross-app tracking. Privacy policy at https://bestpaid.app/legal/privacy. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: x at none against Stopwatch's 4. x also leads on device support (3 vs 1) and iOS requirement (12.0 vs 17.0). Stopwatch's advantage is update cadence (every 2 months vs every 5 months). On price 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
Both are free to download. Stopwatch sells 4 in-app purchases, starting at $0.99 per 7 days. x asks for nothing beyond the download.
x ships an update every 5 months, Stopwatch every 2 months. The most recent releases landed on September 9, 2026 and August 23, 2026 respectively.
| Parameter | x | Stopwatch |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 32 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | x-io Technologies Limited | Vasilii Polovnikov |
In-app purchases
x
No in-app purchases
Stopwatch
- Premium · 1 week3 Days trial$0.997 Days
- Premium · 1 month3 Days trial$1.991 Month
- Premium · 1 year7 Days trial$9.991 Year
- Premium · Lifetime$19.99
