# GymSync vs 75 Day Challenge

The clearest difference is review sentiment: 75 Day Challenge at 88% against GymSync's 29%. 75 Day Challenge also leads on ratings volume (411 vs 1). GymSync's advantage is in-app purchases (none vs 7) and rating (5.0 vs 4.7). On price and ads there is nothing between them.

Both are free to download. 75 Day Challenge sells 7 in-app purchases, starting at $3.99 per 7 days. GymSync asks for nothing beyond the download.

GymSync holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: 75 Day Challenge has 411 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 29% of GymSync's written reviews are positive against 88% of 75 Day Challenge's, so the app with the better star average is not the one people write more warmly about.

GymSync ships an update weekly, 75 Day Challenge every 3 weeks. The most recent releases landed on October 16, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | GymSync | 75 Day Challenge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/gymsync/id561653066/reviews)** | [4.7 (411 ratings)](https://appshunter.io/ios/app/75-day-challenge-soft-edition/id6670955917/reviews) |
| Number of ratings | 1 | **411** |
| Positive reviews | 29.4% of reviews | **88.2% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | **Free** | Freemium |
| Size | 40 MB | 25 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SD17](https://appshunter.io/developer/1718054285) | [Inkolab](https://appshunter.io/developer/1726749975) |

## What reviewers say

### GymSync

[App page](https://appshunter.io/ios/app/gymsync/id561653066)

Easily book and manage fitness classes at your gym. View schedules, reserve spots, and receive timely reminders. Get instant notifications for cancellations and reserve list openings.

**Highlights:** View class timetables, Book and cancel classes, Join reserve lists, Class reminders, Instant notifications

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

**In-app purchases:** none


### 75 Day Challenge

[App page](https://appshunter.io/ios/app/75-day-challenge-soft-edition/id6670955917)

This app guides users through a 75-day program to build healthy habits and develop resilience. It focuses on consistency and sustainable change for both physical and mental wellness, offering a balanced approach to self-improvement.

**Highlights:** Build lasting healthy habits, Stay motivated daily, Visualize progress, Home screen widgets (Premium), Customize challenge rules (Premium), Flexible scheduling

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $3.99 | per 7 days |
| Premium Access | $4.99 | per 7 days |
| Premium Access | $14.99 | per year |
| Premium Access | $19.99 | per year |
| Premium Access | $29.99 | per year |
| Unlock all features | $4.99 | one-time |
| Unlock all features | $34.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Simple and straightforward
- 💡 Helpful for 75 Soft challenge
- 🤩 Motivating and keeps you on track
- 🌟 Cute and aesthetically pleasing design

**What reviewers complain about**

- 🔍 Limited customization options
- 🚫 Premium version doesn't offer much value
- 🐛 Occasional app crashes

**Reported bugs**

- App crashes when trying to start the challenge
- Issues with the app on older iOS versions

**Requested features**

- Add ability to track additional daily goals
- Implement calendar view to see progress
- Allow recording of specific water intake amounts


## Frequently asked questions

### Is GymSync free?

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

### Is 75 Day Challenge free?

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

### Which has better reviews, GymSync or 75 Day Challenge?

GymSync is rated higher. GymSync averages 5.0 out of 5 from 1 ratings, while 75 Day Challenge averages 4.7 from 411 ratings.

### Do GymSync or 75 Day Challenge have ads?

Neither GymSync nor 75 Day Challenge shows ads.

### Which is updated more often, GymSync or 75 Day Challenge?

GymSync ships an update weekly, and 75 Day Challenge every 3 weeks. Most recently, GymSync was updated on October 16, 2026 and 75 Day Challenge on October 23, 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.*