Swim.com vs OSIN
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Swim.com
Automatically record and track your swimming workouts with advanced statistics. Compete with friends and other swimmers on global leaderboards, and access thousands of customizable swim workouts.
- Automatic swim recording with Apple Watch
- Advanced swim statistics
- Stroke type and count detection
- Drill Mode for kick tracking
- Global leaderboards and friend competition
- Thousands of customizable swim workouts
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SWIM.COM IS THE ESSENTIAL APP FOR SWIMMERS! Record your swims automatically with your Apple Watch and track your progress with advanced swim stats. Compete on leaderboards, connect with friends and choose a swim workout to challenge yourself. THE BEST SWIM TRACKING APP FOR THE APPLE WATCH. Use the Swim.com app on your Apple Watch to record your swim workouts automatically; no button-pressing required. Detect stroke type, stroke count with the most accurate swimming app available. You can even track kick and other drills with Drill Mode! Swim.com, uses HealthKit to export your Swim.com activities into the Health app and to read swim activity data from other apps such as Apple's Workout app. COMPETE WITH YOURSELF OR WITH THOUSANDS OF POOLS AND CLUBS WORLDWIDE. Motivate yourself by competing with friends in a club or against other swimmers just like you on our global leaderboards. See how you compare to other swimmers at your local club and aim to be the lane leader. SMART WORKOUTS FOR EVERY SWIMMER. Download the app, and get access to thousands of smart swimming workouts for free. Customize and edit workouts using our new workout editor to craft the perfect swim. You can even add your own workouts and share them with our community! Have an issue? ** CONTACT US AT SUPPORT@SWIM.COM **
OSIN
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The OSIN App enables you to connect and synchronize your OSIN Loop ensuring you receive the right light at the right time no matter where you are.
Screenshots
Verdict
Swim.com and OSIN are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
Swim.com ships an update monthly, OSIN every 3 weeks. The most recent releases landed on September 24, 2026 and December 10, 2025 respectively.
| Parameter | Swim.com | OSIN |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (1.1K ratings) — better | — |
| Positive reviews | 41.5% of reviews | — |
| Number of ratings | 1.1K — better | — |
| Update frequency | Monthly | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 175 MB | 22 MB |
| Age rating | 12+ | 4+ |
| Developer | Spiraledge | OSIN LIGHTING LIMITED |
Bugs and requests
Swim.com
Reported bugs
4 issues- App crashing or freezing during workouts
- Inconsistent lap/distance tracking
- Sync issues between app and Apple Watch
- Inability to properly log or edit workouts
Requested features
5 requests- Improved Strava integration
- Better workout scheduling and notification features
- Ability to track kick sets and drills
- More comprehensive data analysis and visualization
- Seamless sync with Apple Health app
OSIN
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Swim.com
No in-app purchases
OSIN
No in-app purchases
