# TetherSwim vs THWHC

The clearest difference is update cadence: TetherSwim at every 2 weeks against THWHC's every 2 months. THWHC's advantage is iOS requirement (15.0 vs 18.5). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

TetherSwim ships an update every 2 weeks, THWHC every 2 months. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | TetherSwim | THWHC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tetherswim/id6751048224/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 15 MB | 57 MB |
| Requires iOS | 18.5 | **15.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Patrick Biggin](https://appshunter.io/developer/1458225469) | [TeamUp Sports](https://appshunter.io/developer/1449504626) |

## What reviewers say

### TetherSwim

[App page](https://appshunter.io/ios/app/tetherswim/id6751048224)

This app accurately tracks swimming workouts performed with resistance cords or endless pools, overcoming the limitations of traditional trackers. It estimates distance based on stroke count and efficiency, providing comprehensive workout data.

**Highlights:** Accurate distance estimates, Automatic SWOLF tracking, Full workout data (calories, heart rate), Exclude test swims, Strava integration, Automatic Water Lock mode

**Features:** macOS Compatibility

**In-app purchases:** none


### THWHC

[App page](https://appshunter.io/ios/app/thwhc/id6804634087)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is TetherSwim free?

TetherSwim is free to download, with no in-app purchases.

### Is THWHC free?

THWHC is free to download, with no in-app purchases.

### Do TetherSwim or THWHC have ads?

Neither TetherSwim nor THWHC shows ads.

### Which is updated more often, TetherSwim or THWHC?

TetherSwim ships an update every 2 weeks, and THWHC every 2 months. Most recently, TetherSwim was updated on October 30, 2026 and THWHC on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*