# Heatwise Studio vs Annex Pilates

The clearest difference is ads: Heatwise Studio at none against Annex Pilates's shown. Annex Pilates's advantage is update cadence (every 8 days vs every 4 weeks) and device support (3 vs 1). On price 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.

Heatwise Studio ships an update every 4 weeks, Annex Pilates every 8 days. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Heatwise Studio | Annex Pilates |
| --- | --- | --- |
| 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** | Yes |
| Update frequency | Every 4 weeks | **Every 8 days** |
| Monetization | Free with in-app purchases | — |
| Size | 38 MB | 50 MB |
| Requires iOS | 16.0 | **12.3** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Heatwise](https://appshunter.io/developer/1472501563) | [Annex Pilates LLC](https://appshunter.io/developer/1652043894) |

## 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


### Annex Pilates

[App page](https://appshunter.io/ios/app/annex-pilates/id6444064906)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Heatwise Studio free?

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

### Is Annex Pilates free?

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

### Do Heatwise Studio or Annex Pilates have ads?

Annex Pilates shows ads; Heatwise Studio does not.

### Which is updated more often, Heatwise Studio or Annex Pilates?

Heatwise Studio ships an update every 4 weeks, and Annex Pilates every 8 days. Most recently, Heatwise Studio was updated on October 29, 2026 and Annex Pilates on October 27, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*