# JackedRabbit vs GSSI Labs

The clearest difference is monetization model: GSSI Labs at free against JackedRabbit's free with in-app purchases. JackedRabbit's advantage is ratings volume (160 vs 1) and update cadence (every 2 weeks vs every 5 weeks). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.9 for JackedRabbit against 5.0 for GSSI Labs. That said, the two scores are not equally well evidenced: JackedRabbit has 160 ratings behind it against 1, so its average is the more settled of the two.

JackedRabbit ships an update every 2 weeks, GSSI Labs every 5 weeks. Both last shipped on October 28, 2026.

## The numbers

| Metric | JackedRabbit | GSSI Labs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (160 ratings)](https://appshunter.io/ios/app/jackedrabbit/id6747449627/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/gssi-labs/id6782131488/reviews)** |
| Number of ratings | **160** | 1 |
| Positive reviews | 96.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 59 MB | 195 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [JackedRabbit](https://appshunter.io/developer/1821494975) | [PepsiCo, Inc.](https://appshunter.io/developer/492265869) |

## What reviewers say

### JackedRabbit

[App page](https://appshunter.io/ios/app/jackedrabbit/id6747449627)

Discover diverse fitness options with unlimited access to gyms, studios, and wellness experiences. Switch your routine monthly without long-term commitments. Manage your membership and book classes easily through the app.

**Highlights:** Unlimited access to gyms and studios, Monthly membership flexibility, Discover various fitness activities, In-app class booking, Exclusive wellness perks, Referral rewards

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

**In-app purchases:** none


### GSSI Labs

[App page](https://appshunter.io/ios/app/gssi-labs/id6782131488)

Contribute to sports science research by completing studies and surveys. Connect your fitness data to earn points redeemable for gift cards. Help shape the future of athletic performance.

**Highlights:** Complete scientific studies, Participate in surveys, Connect fitness data, Earn points, Redeem for gift cards

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

**In-app purchases:** none


## Frequently asked questions

### Is JackedRabbit free?

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

### Is GSSI Labs free?

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

### Which has better reviews, JackedRabbit or GSSI Labs?

GSSI Labs is rated higher. JackedRabbit averages 4.9 out of 5 from 160 ratings, while GSSI Labs averages 5.0 from 1 ratings.

### Do JackedRabbit or GSSI Labs have ads?

Neither JackedRabbit nor GSSI Labs shows ads.

### Which is updated more often, JackedRabbit or GSSI Labs?

JackedRabbit ships an update every 2 weeks, and GSSI Labs every 5 weeks. Most recently, JackedRabbit was updated on October 28, 2026 and GSSI Labs on October 28, 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.*