# Sonar Fit vs Riven

Sonar Fit and Riven 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.

Both are free to download. Sonar Fit sells 2 in-app purchases, starting at $3.99 per month and Riven sells 5 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Sonar Fit ships an update every 2 weeks, Riven every 10 days. The most recent releases landed on November 8, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | Sonar Fit | Riven |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (4 ratings)](https://appshunter.io/ios/app/riven-auto-workout-tracker/id6770362701/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 10 days** |
| Monetization | — | Freemium |
| Size | 11 MB | 41 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Floxx Labs](https://appshunter.io/developer/1767788796) | [Bara Bilal](https://appshunter.io/developer/1878705645) |

## What reviewers say

### Sonar Fit

[App page](https://appshunter.io/ios/app/sonar-fit/id6740939129)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Access | $3.99 | per month |
| Unlimited access | $29.99 | per year |


### Riven

[App page](https://appshunter.io/ios/app/riven-auto-workout-tracker/id6770362701)

This app automatically detects and counts your exercise repetitions and measures how close you are to muscle failure during each set. It provides instant feedback with a score and color-coded tiers, helping you optimize your training for muscle growth. Requires an Apple Watch and iPhone.

**Highlights:** Auto-counts reps without manual input, Auto-detects over 30 exercises, Scores sets for muscle failure proximity (0-100), Color-coded feedback tiers, Weekly per-muscle failure summary, Automatic workout logging to Apple Health

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $2.99 | per month |
| Unlimited Monthly | $4.99 | per month |
| Pro Yearly | $29.99 | per year |
| Unlimited Yearly | $39.99 | per year |
| Unlimited Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is Sonar Fit free?

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

### Is Riven free?

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

### Do Sonar Fit or Riven have ads?

Neither Sonar Fit nor Riven shows ads.

### Which is updated more often, Sonar Fit or Riven?

Sonar Fit ships an update every 2 weeks, and Riven every 10 days. Most recently, Sonar Fit was updated on November 8, 2026 and Riven on November 13, 2026.

---

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