# 90 Day Challenge vs Gritzo

The clearest difference is in-app purchases: Gritzo at none against 90 Day Challenge's 10. Gritzo also leads on ads (none vs shown). 90 Day Challenge's advantage is ratings volume (5K vs 30). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. 90 Day Challenge sells 10 in-app purchases, starting at $2.99 per 7 days. Gritzo asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for 90 Day Challenge against 4.8 for Gritzo. That said, the two scores are not equally well evidenced: 90 Day Challenge has 5K ratings behind it against 30, 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 57% of Gritzo's.

90 Day Challenge ships an update every 5 days, Gritzo every 10 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 90 Day Challenge | Gritzo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (5K ratings)](https://appshunter.io/ios/app/90-day-challenge/id6446773000/reviews) | **[4.8 (30 ratings)](https://appshunter.io/ios/app/gritzo/id6472877680/reviews)** |
| Number of ratings | **5K** | 30 |
| Positive reviews | **64.4% of reviews** | 56.5% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 10 days |
| Monetization | Free with in-app purchases | **Free** |
| Size | 240 MB | 136 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Browney B.V.](https://appshunter.io/developer/1678973034) | [Bright Lifecare Private LTD](https://appshunter.io/developer/995933851) |

## 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 (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WEEKLY | $2.99 | per 7 days |
| Weekly | $5.00 | per 7 days |
| WEEKLY | $8.99 | per 7 days |
| Monthly | $15.00 | per month |
| Monthly | $15.00 | per month |
| MONTHLY | $21.99 | per month |
| YEARLY | $39.00 | per year |
| 90 DAYS | $49.00 | per 3 months |
| YEARLY | $99.00 | per year |
| Yearly | $119.00 | per year |

**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


### Gritzo

[App page](https://appshunter.io/ios/app/gritzo/id6472877680)

This app offers personalized nutritional drinks for children, focusing on height, weight, and immunity. Parents can discover products tailored to their child's age, gender, and growth needs, with exclusive offers and a seamless shopping experience.

**Highlights:** Personalized nutrition recommendations, Goal-based product selection, Height, weight, and immunity support, Exclusive app offers and discounts, User-friendly interface, Secure payment gateway

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

**In-app purchases:** none


## Frequently asked questions

### Is 90 Day Challenge free?

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

### Is Gritzo free?

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

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

Gritzo is rated higher. 90 Day Challenge averages 4.7 out of 5 from 5K ratings, while Gritzo averages 4.8 from 30 ratings.

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

90 Day Challenge shows ads; Gritzo does not.

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

90 Day Challenge ships an update every 5 days, and Gritzo every 10 days. Most recently, 90 Day Challenge was updated on November 3, 2026 and Gritzo on October 30, 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.*