# TetherSwim > Swim tracker for resistance cords, tethers, and endless pools using Apple Watch data. (iPhone/iPad app by Patrick Biggin.) - Source: https://appshunter.io/ios/app/tetherswim/id6751048224 (this page in markdown: same URL + `.md`) - Developer: [Patrick Biggin](https://appshunter.io/developer/1458225469) - Category: Health & Fitness - Price: Free - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 18.5 · 15 MB - Languages: English - Released: 2025-08-15 - Data updated: 2026-06-19 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/tetherswim/id6751048224/reviews.md ## What is TetherSwim? TetherSwim is built for swimmers training with resistance cords, swim tethers, or endless pools. Traditional swim trackers can struggle with these sessions, giving you wildly inaccurate distances or ignoring your efforts altogether. With TetherSwim, your distance is estimated intelligently based on your real stroke count, SWOLF, and previous swim history — all from your Apple Watch. Features: • Accurate distance estimates – Uses your stroke rate, efficiency, and past workouts to calculate real swim distance. • Automatic SWOLF tracking – Measures your swim efficiency in tethered conditions. • Calories, heart rate, and more – Full workout data, just like in regular pool swims. • Exclude test swims – Keep your baselines clean by excluding warm-ups or experiments. • Strava integration – Upload your tethered swim sessions directly. • Water Lock mode – Automatically engages when you start, so your watch screen won’t go crazy mid-session. ## Key features - Accurate distance estimates - Automatic SWOLF tracking - Full workout data (calories, heart rate) - Exclude test swims - Strava integration - Automatic Water Lock mode ## Frequently asked questions about TetherSwim ### How does TetherSwim estimate swim distance? TetherSwim intelligently estimates distance by using your stroke rate, SWOLF efficiency, and past swim history, all collected from your Apple Watch. This method is designed to be more accurate for tethered swimming than traditional trackers. ### What workout data does TetherSwim provide? TetherSwim provides comprehensive workout data similar to regular pool swims, including estimated distance, automatic SWOLF tracking for efficiency, calories burned, and heart rate. It also allows you to exclude test swims from your main workout logs. ### Can TetherSwim integrate with other fitness platforms? Yes, TetherSwim offers Strava integration, allowing you to directly upload your tethered swim sessions to your Strava account. This makes it easy to keep all your workout data in one place. ### Does TetherSwim have ads? No, TetherSwim does not contain advertisements. It is a completely ad-free experience for users. ### What devices is TetherSwim compatible with? TetherSwim is designed for use with Apple Watch and iPhone. It leverages the sensors and capabilities of both devices to provide accurate swim tracking. ### How often is TetherSwim updated? The latest version of TetherSwim is 1.8, and it was last updated on March 12, 2026. This indicates a recent update, suggesting ongoing development and support. ### What is the age rating for TetherSwim? TetherSwim has an age rating of 4+, making it suitable for a wide range of users. This rating suggests no mature content is present within the application. ### What is the user sentiment for TetherSwim? Based on the available data, TetherSwim has a perfect rating of 5.0 stars from 1 rating. This single rating indicates a highly positive initial user experience. ## Version history (last 5 releases) ### 1.9 — 2026-06-10 Security enhancements ### 1.8 — 2026-03-12 Bug fixes and improvements for a smoother swim tracking experience: - More accurate calorie tracking for tethered workouts - Trends charts now show your full workout history - Improved water lock behaviour — stays engaged through pause and resume - Your workout is now protected if the app is interrupted by a call or notification — it picks up right where you left off - Cleaned up settings and removed features that weren't ready yet - Session details now open correctly from the dashboard ### 1.7 — 2026-01-28 update to disable the default distance calculation from the apple source in favour of tether swim distances. ### 1.6 — 2025-10-08 watch heart rate permission update ### 1.5 — 2025-09-15 watch complication for night mode. ## Apps similar to TetherSwim | App | Rating | Price | Category | | --- | --- | --- | --- | | [DuoSwim: Swim Workout App](https://appshunter.io/ios/app/duoswim-swim-workout-app/id1548487050) | 1.0 (1) | Free | Health & Fitness | | [Aqua Move](https://appshunter.io/ios/app/aqua-move/id1582159967) | 4.8 (8) | Free | Health & Fitness | | [Rekup: WOD Muscle Recovery](https://appshunter.io/ios/app/rekup-wod-muscle-recovery/id6503148376) | — | Free | Health & Fitness | | [Shoe Tracker & Lifespan: SHOOZ](https://appshunter.io/ios/app/shoe-tracker-and-lifespan-shooz/id6476882229) | 4.6 (113) | Free | Health & Fitness | | [Live Better](https://appshunter.io/ios/app/live-better/id1535899917) | 2.5 (4) | Free | Health & Fitness | | [The Y NSW](https://appshunter.io/ios/app/the-y-nsw/id1548253769) | 4.2 (5) | Free | Health & Fitness | ## More apps by Patrick Biggin - [ikirugai Pocket Money Tracker](https://appshunter.io/ios/app/ikirugai-pocket-money-tracker/id6759555367) All apps by Patrick Biggin: https://appshunter.io/developer/1458225469 ## Related topics [d biggins](https://appshunter.io/ios/topics/d-biggins) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-19.*