# ZTF vs PureGym US

The clearest difference is review sentiment: ZTF at 100% against PureGym US's 10%. ZTF also leads on rating (5.0 vs 4.6). PureGym US's advantage is ratings volume (18K vs 4) and monetization model (free vs ad-supported). On price, update cadence, 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.

ZTF holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: PureGym US has 18K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 100% of ZTF's written reviews are positive against 10% of PureGym US's.

ZTF ships an update monthly, PureGym US every 5 weeks. The most recent releases landed on October 30, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | ZTF | PureGym US |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/ztf/id6739738546/reviews)** | [4.6 (18K ratings)](https://appshunter.io/ios/app/puregym-us/id6747757018/reviews) |
| Number of ratings | 4 | **18K** |
| Positive reviews | **100.0% of reviews** | 10.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | Ad-supported | **Free** |
| Size | 58 MB | 115 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Manoel Fangmo Djouokep](https://appshunter.io/developer/1699489606) | [Blink Holdings Inc.](https://appshunter.io/developer/1343440337) |

## What reviewers say

### ZTF

[App page](https://appshunter.io/ios/app/ztf/id6739738546)

This fitness application assists personal trainers in monitoring their clients' progress and ensuring accountability. It provides a platform for trainers to manage client relationships and drive adherence to fitness plans.

**Highlights:** Client accountability tracking, Personal trainer tools, Fitness plan management, Progress monitoring

**Features:** Apple Wallet

**In-app purchases:** none


### PureGym US

[App page](https://appshunter.io/ios/app/puregym-us/id6747757018)

Manage your fitness journey with this gym companion app. Easily check in, handle your membership, and stay updated on gym news. It helps you stay active by integrating with health data.

**Highlights:** Mobile check-in, Membership management, Guest invitations, Billing and balance updates, HealthKit integration

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

**In-app purchases:** none

**What reviewers complain about**

- 🐛 Login issues
- 🐛 Password reset not working
- 🐛 Registration not working
- 🐛 Membership information not transferring
- 🐛 Incorrect gym location

**Reported bugs**

- Login not working
- Password reset not working
- Registration not working
- Incorrect gym location
- Membership information not transferring

**Requested features**

- Ability to login with correct credentials
- Proper password reset functionality
- Seamless account registration
- Accurate gym location selection
- Membership information transfer


## Frequently asked questions

### Is ZTF free?

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

### Is PureGym US free?

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

### Which has better reviews, ZTF or PureGym US?

ZTF is rated higher. ZTF averages 5.0 out of 5 from 4 ratings, while PureGym US averages 4.6 from 18K ratings.

### Do ZTF or PureGym US have ads?

Neither ZTF nor PureGym US shows ads.

### Which is updated more often, ZTF or PureGym US?

ZTF ships an update monthly, and PureGym US every 5 weeks. Most recently, ZTF was updated on October 30, 2026 and PureGym US on November 1, 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.*