# Relentless Trainer vs Thundr App

The clearest difference is rating: Relentless Trainer at 4.9 against Thundr App's 3.8. Relentless Trainer also leads on update cadence (every 3 days vs every 27 months). Thundr App's advantage is in-app purchases (none vs 9). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. Relentless Trainer sells 9 in-app purchases, starting at $9.99 per month. Thundr App asks for nothing beyond the download.

Relentless Trainer holds the better App Store score, 4.9 against 3.8. Both are backed by a comparable volume of ratings — 15 and 12 respectively. Written reviews complicate that: 60% of Relentless Trainer's written reviews are positive against 64% of Thundr App's, so the app with the better star average is not the one people write more warmly about.

Relentless Trainer ships an update every 3 days, Thundr App every 27 months. The most recent releases landed on October 11, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Relentless Trainer | Thundr App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (15 ratings)](https://appshunter.io/ios/app/relentless-trainer/id1630725830/reviews)** | [3.8 (12 ratings)](https://appshunter.io/ios/app/thundr-app/id6480428125/reviews) |
| Number of ratings | **15** | 12 |
| Positive reviews | 60.0% of reviews | **63.6% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 27 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 223 MB | 46 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Relentless Method AB](https://appshunter.io/developer/1091241290) | [DSS Sports Group Inc](https://appshunter.io/developer/1738995467) |

## What reviewers say

### Relentless Trainer

[App page](https://appshunter.io/ios/app/relentless-trainer/id1630725830)

This AI-powered coach creates daily personalized workouts for various fitness disciplines, adapting to your current state and history. It offers nutrition plans, extensive exercise libraries with videos, and flexible training options. Track progress and integrate with health apps and smart devices for a comprehensive fitness experience.

**Highlights:** AI-powered personalized workouts, Nutrition program, 1200+ exercises with videos, Flexible training options, Integration with health apps, Specialized training tracks

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dash Monthly Subscription | $9.99 | per month |
| Core Monthly Subscription | $17.99 | per month |
| Monthly | $23.99 | per month |
| Dash Quarterly Subscription | $23.99 | per 3 months |
| Core Quarterly Subscription | $44.99 | per 3 months |
| Quarterly | $59.99 | per 3 months |
| Dash Yearly Subscription | $79.99 | per year |
| Core Yearly Subscription | $149.99 | per year |
| Yearly | $195.99 | per year |


### Thundr App

[App page](https://appshunter.io/ios/app/thundr-app/id6480428125)

Access your training and nutrition plans, join group challenges, and schedule appointments with coaches. This app supports physical training and mental toughness for a winning mindset.

**Highlights:** Workout tracking, Nutrition information access, Group challenges, Scheduled workout viewing, Coach appointment booking

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

**In-app purchases:** none


## Frequently asked questions

### Is Relentless Trainer free?

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

### Is Thundr App free?

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

### Which has better reviews, Relentless Trainer or Thundr App?

Relentless Trainer is rated higher. Relentless Trainer averages 4.9 out of 5 from 15 ratings, while Thundr App averages 3.8 from 12 ratings.

### Do Relentless Trainer or Thundr App have ads?

Neither Relentless Trainer nor Thundr App shows ads.

### Which is updated more often, Relentless Trainer or Thundr App?

Relentless Trainer ships an update every 3 days, and Thundr App every 27 months. Most recently, Relentless Trainer was updated on October 11, 2026 and Thundr App on October 2, 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.*