# Sonar vs Variable Resistance Training

The clearest difference is rating: Sonar at 4.6 against Variable Resistance Training's 4.0. Sonar also leads on ads (none vs shown) and ratings volume (336 vs 4). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Sonar sells 7 in-app purchases, starting at $5.99 per month and Variable Resistance Training sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Sonar holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: Sonar has 336 ratings behind it against 4, so its average is the more settled of the two.

Sonar ships an update weekly, Variable Resistance Training every 6 days. The most recent releases landed on October 21, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Sonar | Variable Resistance Training |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (336 ratings)](https://appshunter.io/ios/app/sonar-health-and-performance/id1595073849/reviews)** | [4.0 (4 ratings)](https://appshunter.io/ios/app/variable-resistance-training/id6749834451/reviews) |
| Number of ratings | **336** | 4 |
| Positive reviews | 67.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Weekly | **Every 6 days** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 117 MB | 97 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sonar Health, Inc.](https://appshunter.io/developer/1595073851) | [Andrew Soumbos](https://appshunter.io/developer/1812962868) |

## What reviewers say

### Sonar

[App page](https://appshunter.io/ios/app/sonar-health-and-performance/id1595073849)

Unify data from all your wearables and lifestyle trackers to gain personalized health insights. Understand your sleep, recovery, stress, and activity with AI-powered analysis and daily guidance to optimize your well-being.

**Highlights:** Syncs with multiple wearables and apps, AI-powered personalized health insights, Daily scores for recovery, sleep, and stress, Detailed training analytics, 24/7 vitals monitoring, Tailored health recommendations

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sonar Pro - Monthly (Legacy) | $5.99 | per month |
| Sonar Pro - Monthly | $5.99 | per month |
| Sonar Pro - Annual (Legacy) | $49.99 | per year |
| Sonar Pro - Annual | $49.99 | per year |
| Sonar Pro - Lifetime | $199.99 | one-time |
| Sonar Pro - Lifetime | $249.99 | one-time |
| Sonar Pro - Lifetime | $299.99 | one-time |

**What reviewers like**

- 🚀 Seamless integration
- 👍 Elegant data presentation
- 💡 Comprehensive health tracking
- 🚀 Intuitive user interface
- 👍 Excellent customer support

**What reviewers complain about**

- 🐛 Sync issues
- 💰 Expensive subscription
- 🔍 Lack of transparency on pricing
- 🔍 Limited feature set for free version

**Reported bugs**

- Inconsistent data syncing
- Crashes and freezes
- Unreliable notifications

**Requested features**

- Customizable widgets
- Deeper data analysis and insights
- Improved historical data tracking
- Integration with more wearable devices


### Variable Resistance Training

[App page](https://appshunter.io/ios/app/variable-resistance-training/id6749834451)

This app offers advanced tracking for resistance band workouts, automatically calculating resistance and progression based on your saved equipment. It also supports tracking weights and calisthenics, providing detailed analytics and a video library for exercise demonstrations.

**Highlights:** Automatic band resistance calculation, Dynamic resistance progression generation, Weight and calisthenics tracking, Full video exercise library, Detailed analytics and progress charts, Customizable rest timer, Superset functionality

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VRT Monthly | $3.99 | per month |
| VRT Annual | $39.99 | per year |
| VRT Lifetime Pro | $149.99 | one-time |


## Frequently asked questions

### Is Sonar free?

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

### Is Variable Resistance Training free?

Variable Resistance Training is free to download, with in-app purchases available.

### Which has better reviews, Sonar or Variable Resistance Training?

Sonar is rated higher. Sonar averages 4.6 out of 5 from 336 ratings, while Variable Resistance Training averages 4.0 from 4 ratings.

### Do Sonar or Variable Resistance Training have ads?

Variable Resistance Training shows ads; Sonar does not.

### Which is updated more often, Sonar or Variable Resistance Training?

Sonar ships an update weekly, and Variable Resistance Training every 6 days. Most recently, Sonar was updated on October 21, 2026 and Variable Resistance Training on October 10, 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.*