Stopwatch Workout vs NSJ Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stopwatch Workout
This app combines a stopwatch and workout tracker for efficient track running. Easily record your runs and lap times with large, accessible buttons, even during intense interval training. It seamlessly integrates with HealthKit to log your workouts.
- Stopwatch with lap functionality
- Crown control for ease of use
- Records run workouts
- Large, easy-to-press buttons
- HealthKit integration
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Stopwatch Workout is the best app for track workouts on Apple Watch. Instead of needing to use a separate workout app while also using a stopwatch, the Stopwatch Workout App combines those two functions into one easy to use app. Simply hold the start button to start a workout and use the stopwatch like any other classic stopwatch knowing that you will get credit you deserve for your run. The buttons are big and easy to press even if you are in the midst of mile repeats. Features: -Stopwatch with lap feature. -Control using the crown. -Records run workouts. -Big buttons that are easy to press. -More coming soon. Created by Jake Derouin (Runner for CU Boulder). This app uses HealthKit to record workouts.
NSJ Tracker
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GPS tracker app for yacht racing. Sends real-time position, speed, and course data to the race management server. ヨットレース用GPSトラッカーアプリ。位置・速度・針路データをリアルタイムでレース管理サーバーに送信します。
Screenshots
Verdict
The clearest difference is device support: Stopwatch Workout at 3 against NSJ Tracker's 1. Stopwatch Workout also leads on iOS requirement (13.0 vs 17.6). On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Stopwatch Workout ships an update every 9 days, NSJ Tracker every 6 days. The most recent releases landed on October 3, 2026 and October 2, 2026 respectively.
| Parameter | Stopwatch Workout | NSJ Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 9 days | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod, Apple Watch — better | iPhone |
| Requires iOS | 13.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 1 MB | 0 MB |
| Age rating | 4+ | 4+ |
| Developer | CyberWisp LLC | Keita Yukinori |
In-app purchases
Stopwatch Workout
No in-app purchases
NSJ Tracker
No in-app purchases
Questions
Is Stopwatch Workout free?
Is NSJ Tracker free?
Do Stopwatch Workout or NSJ Tracker have ads?
Which is updated more often, Stopwatch Workout or NSJ Tracker?
Other comparisons
