# 90 Day Challenge vs Relentless

The clearest difference is ads: Relentless at none against 90 Day Challenge's shown. 90 Day Challenge's advantage is review sentiment (64% vs 33%) and ratings volume (5K vs 29). On price, rating, in-app purchases and monetization model there is nothing between them.

Both are free to download. 90 Day Challenge sells 37 in-app purchases, starting at $2.99 per 7 days and Relentless sells 2 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for 90 Day Challenge against 4.7 for Relentless. That said, the two scores are not equally well evidenced: 90 Day Challenge has 5K ratings behind it against 29, so its average is the more settled of the two. Written reviews are what separate them: 64% of 90 Day Challenge's written reviews are positive against 33% of Relentless's.

90 Day Challenge ships an update every 5 days, Relentless every 2 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 90 Day Challenge | Relentless |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (5K ratings)](https://appshunter.io/ios/app/90-day-challenge/id6446773000/reviews)** | [4.7 (29 ratings)](https://appshunter.io/ios/app/relentless-workout-tracker/id6759179164/reviews) |
| Number of ratings | **5K** | 29 |
| Positive reviews | **64.1% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | Freemium |
| Size | 246 MB | 37 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Browney B.V.](https://appshunter.io/developer/1678973034) | [Nithya Thomas](https://appshunter.io/developer/1844458784) |

## What reviewers say

### 90 Day Challenge

[App page](https://appshunter.io/ios/app/90-day-challenge/id6446773000)

This app provides personalized 90-day fitness programs tailored to your goals, fitness level, and preferred training style. Track your progress with detailed metrics, view body changes, and stay motivated with streaks and badges. You can also challenge friends to join your fitness journey.

**Highlights:** Personalized 90-day workout programs, In-app progress tracking (weight, reps, PRs), Monthly strength tests, Progress picture tool, Daily streaks and achievement badges, Challenge others feature, Diet calculator

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

**In-app purchases (37)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WEEKLY | $2.99 | per 7 days |
| Weekly | $5.00 | per 7 days |
| Weekly | $5.00 | per 7 days |
| WEEKLY | $8.99 | per 7 days |
| MONTHLY | $9.99 | per month |
| Monthly | $15.00 | per month |
| Monthly | $15.00 | per month |
| MONTHLY | $21.99 | per month |
| 90 DAYS | $27.99 | per 3 months |
| 90 DAYS | $39.00 | per 3 months |
| 90 DAYS | $39.00 | per 3 months |
| YEARLY | $39.00 | per year |
| 90 DAYS | $41.49 | per 3 months |
| 90 DAYS | $44.00 | per 3 months |
| 90 DAYS | $49.00 | per 3 months |
| Yearly | $59.00 | per year |
| YEARLY | $89.00 | per year |
| YEARLY | $99.00 | per year |
| YEARLY | $99.99 | per year |
| Yearly | $119.00 | per year |
| 30-Day Challenge | $29.00 | one-time |
| 90 Day Shred Pass - 2026 | $49.00 | one-time |
| Strength & Size at Home | $69.00 | one-time |
| JC’s Fat Loss Program | $69.00 | one-time |
| The Bodybuilder Shred | $69.00 | one-time |
| Lean & Strong at Home | $69.00 | one-time |
| The Hybrid Shred | $69.00 | one-time |
| The Ultimate Shred Program | $69.00 | one-time |
| Hybrid Strength & Size | $69.00 | one-time |
| The Hybrid Bulk | $69.00 | one-time |
| Lean Hybrid Strength | $69.00 | one-time |
| The Home Shred Program | $69.00 | one-time |
| Strength & Muscle Bulk | $69.00 | one-time |
| Strength & Muscle Shred | $69.00 | one-time |
| Fat Free Runner Program | $69.00 | one-time |
| The Powerbuilder Plan | $69.00 | one-time |
| Hybrid Strength & Muscle | $69.00 | one-time |

**What reviewers like**

- 🚀 Smooth app experience
- 👍 Helpful workout and nutrition features
- 💪 Effective for building muscle and losing weight
- 🤩 Motivating content from Browney and Captain America

**What reviewers complain about**

- 🐛 Frequent app crashes and freezes
- ⏱️ Slow loading times for videos and content
- 🔍 Difficulty navigating the app and finding features
- 🤔 Limited customization options for workouts

**Reported bugs**

- Black screen issue after login
- Inability to complete workouts or log progress
- Inconsistent app performance across devices
- Syncing issues between app and user accounts

**Requested features**

- More home workout options without equipment
- Ability to adjust workout schedules and rest days
- Improved video quality and playback stability
- Better integration with fitness trackers and smartwatches


### Relentless

[App page](https://appshunter.io/ios/app/relentless-workout-tracker/id6759179164)

This app helps you track workouts, log nutrition, and monitor progress towards your fitness goals. It features an exercise library, customizable routines, calorie counting, and progress photos to keep you motivated.

**Highlights:** Workout logging with exercise library, Customizable workout programs, Nutrition and calorie tracking, Progress photos and body measurements, Social challenges and friend tracking, Workout streaks and accountability

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Relentless  Premium Monthly | $12.99 | per month |
| Relentless Premium Yearly | $29.99 | per year |


## Frequently asked questions

### Is 90 Day Challenge free?

90 Day Challenge is free to download, with in-app purchases available.

### Is Relentless free?

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

### Which has better reviews, 90 Day Challenge or Relentless?

90 Day Challenge is rated higher. 90 Day Challenge averages 4.7 out of 5 from 5K ratings, while Relentless averages 4.7 from 29 ratings.

### Do 90 Day Challenge or Relentless have ads?

90 Day Challenge shows ads; Relentless does not.

### Which is updated more often, 90 Day Challenge or Relentless?

90 Day Challenge ships an update every 5 days, and Relentless every 2 weeks. Most recently, 90 Day Challenge was updated on October 25, 2026 and Relentless on October 24, 2026.

---

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