# HSV Book vs NHJ Studios

The clearest difference is update cadence: NHJ Studios at every 5 weeks against HSV Book's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

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

HSV Book ships an update every 3 months, NHJ Studios every 5 weeks. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | HSV Book | NHJ Studios |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 105 MB | 56 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Polyfield Property Limited](https://appshunter.io/developer/1339606201) | [TeamUp Sports](https://appshunter.io/developer/1449504626) |

## What reviewers say

### HSV Book

[App page](https://appshunter.io/ios/app/hsv-book/id1236725374)

Easily book fitness classes, view timetables, and get real-time updates on news and offers. Manage your bookings, explore membership options, and stay informed about your favorite facility.

**Highlights:** Fitness class timetables, Class booking and management, Public swim timetables, Centre information and news, Push notifications for updates, Membership viewing and online joining, HealthKit integration for activity data

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

**In-app purchases:** none


### NHJ Studios

[App page](https://appshunter.io/ios/app/nhj-studios/id6761001517)

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

**In-app purchases:** none


## Frequently asked questions

### Is HSV Book free?

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

### Is NHJ Studios free?

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

### Do HSV Book or NHJ Studios have ads?

Neither HSV Book nor NHJ Studios shows ads.

### Which is updated more often, HSV Book or NHJ Studios?

HSV Book ships an update every 3 months, and NHJ Studios every 5 weeks. Most recently, HSV Book was updated on October 8, 2026 and NHJ Studios on October 7, 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.*