# Heatwise Studio vs OutBox Gym

The clearest difference is update cadence: OutBox Gym at weekly against Heatwise Studio's every 4 weeks. 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.

Heatwise Studio ships an update every 4 weeks, OutBox Gym weekly. The most recent releases landed on October 29, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Heatwise Studio | OutBox Gym |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (703 ratings)](https://appshunter.io/ios/app/heatwise-studio/id1504908056/reviews)** | — |
| Number of ratings | **703** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 38 MB | 191 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Heatwise](https://appshunter.io/developer/1472501563) | [OutBox Gym](https://appshunter.io/developer/6805869217) |

## What reviewers say

### Heatwise Studio

[App page](https://appshunter.io/ios/app/heatwise-studio/id1504908056)

Book your next sauna session with this app. Browse studio locations, view class schedules, and manage your reservations. Purchase classes and workshops, and update your account details all in one place.

**Highlights:** Find and book sauna sessions, View studio locations, Check class schedules, Review existing reservations, Purchase classes and workshops, Manage your account

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

**In-app purchases:** none


### OutBox Gym

[App page](https://appshunter.io/ios/app/outbox-gym/id6805869215)

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

**In-app purchases:** none


## Frequently asked questions

### Is Heatwise Studio free?

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

### Is OutBox Gym free?

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

### Do Heatwise Studio or OutBox Gym have ads?

Neither Heatwise Studio nor OutBox Gym shows ads.

### Which is updated more often, Heatwise Studio or OutBox Gym?

Heatwise Studio ships an update every 4 weeks, and OutBox Gym weekly. Most recently, Heatwise Studio was updated on October 29, 2026 and OutBox Gym on October 2, 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.*