# TetherSwim vs Saavu

The clearest difference is in-app purchases: TetherSwim at none against Saavu's 2. Saavu's advantage is iOS requirement (15.1 vs 18.5). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Saavu sells 2 in-app purchases, starting at $4.99 per month. TetherSwim asks for nothing beyond the download.

TetherSwim ships an update every 2 weeks, Saavu every 9 days. The most recent releases landed on October 10, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | TetherSwim | Saavu |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tetherswim/id6751048224/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Monetization | Free | — |
| Size | 15 MB | 63 MB |
| Requires iOS | 18.5 | **15.1** |
| Devices | iPhone, Apple Watch | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Patrick Biggin](https://appshunter.io/developer/1458225469) | [Rivoro Studio](https://appshunter.io/developer/6771497993) |

## 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


### Saavu

[App page](https://appshunter.io/ios/app/saavu/id6771497991)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Saavu Pro | $4.99 | per month |
| Saavu Pro (Annual) | $39.99 | per year |


## Frequently asked questions

### Is TetherSwim free?

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

### Is Saavu free?

Saavu is free to download, with in-app purchases available.

### Do TetherSwim or Saavu have ads?

Neither TetherSwim nor Saavu shows ads.

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

TetherSwim ships an update every 2 weeks, and Saavu every 9 days. Most recently, TetherSwim was updated on October 10, 2026 and Saavu on October 3, 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.*