# Refinery Lab vs 31 Pilates Studio

The clearest difference is update cadence: Refinery Lab at fortnightly against 31 Pilates Studio's every 4 months. Refinery Lab also leads on device support. On price, in-app purchases and iOS requirement there is nothing between them.

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

Refinery Lab ships an update fortnightly, 31 Pilates Studio every 4 months. The most recent releases landed on October 18, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Refinery Lab | 31 Pilates Studio |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | **Fortnightly** | Every 4 months |
| Size | 46 MB | 49 MB |
| Requires iOS | 15.5.0 | **15.1** |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Abay Kaldybayev](https://appshunter.io/developer/1771070064) | [Vasiliy Suvorov](https://appshunter.io/developer/1612668132) |

## What reviewers say

### Refinery Lab

[App page](https://appshunter.io/ios/app/refinery-lab/id6746368856)

**In-app purchases:** none


### 31 Pilates Studio

[App page](https://appshunter.io/ios/app/31-pilates-studio/id6759158199)

**In-app purchases:** none


## Frequently asked questions

### Is Refinery Lab free?

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

### Is 31 Pilates Studio free?

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

### Which is updated more often, Refinery Lab or 31 Pilates Studio?

Refinery Lab ships an update fortnightly, and 31 Pilates Studio every 4 months. Most recently, Refinery Lab was updated on October 18, 2026 and 31 Pilates Studio on October 7, 2026.

---

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