# PUR REFORMER vs ClassSub

The clearest difference is ads: ClassSub at none against PUR REFORMER's shown. ClassSub also leads on update cadence (daily vs every 5 months). PUR REFORMER's advantage is iOS requirement (14.0 vs 17.0). On price, 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.

PUR REFORMER ships an update every 5 months, ClassSub daily. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | PUR REFORMER | ClassSub |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Daily** |
| Size | 125 MB | 8 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [LD PILATES](https://appshunter.io/developer/1810296428) | [Inpulsd](https://appshunter.io/developer/1880600958) |

## What reviewers say

### PUR REFORMER

[App page](https://appshunter.io/ios/app/pur-reformer/id6744980163)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### ClassSub

[App page](https://appshunter.io/ios/app/classsub/id6772268299)

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

**In-app purchases:** none


## Frequently asked questions

### Is PUR REFORMER free?

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

### Is ClassSub free?

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

### Do PUR REFORMER or ClassSub have ads?

PUR REFORMER shows ads; ClassSub does not.

### Which is updated more often, PUR REFORMER or ClassSub?

PUR REFORMER ships an update every 5 months, and ClassSub daily. Most recently, PUR REFORMER was updated on October 10, 2026 and ClassSub 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.*