# ProWarm vs CheckedOK Pre

The clearest difference is iOS requirement: ProWarm at 13.0 against CheckedOK Pre's 15.1. On price, update cadence, ads 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.

ProWarm ships an update every 10 months, CheckedOK Pre every 7 months. The most recent releases landed on June 9, 2026 and May 17, 2026 respectively.

## The numbers

| Metric | ProWarm | CheckedOK Pre |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/prowarm/id1445396744/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 21.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 7 months** |
| Monetization | Free | — |
| Size | 191 MB | 38 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [ProWarm](https://appshunter.io/developer/889884452) | [CoreRFID Limited](https://appshunter.io/developer/1193252576) |

## What reviewers say

### ProWarm

[App page](https://appshunter.io/ios/app/prowarm/id1445396744)

Control your underfloor heating system remotely with this app. It offers effortless and intelligent management for convenience and efficiency, putting full heating control at your fingertips anytime, anywhere.

**Highlights:** Effortless control, Intelligent heating management, Remote access, Anytime, anywhere control, Modern living integration

**In-app purchases:** none


### CheckedOK Pre

[App page](https://appshunter.io/ios/app/checkedok-pre-use/id6746045144)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ProWarm free?

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

### Is CheckedOK Pre free?

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

### Do ProWarm or CheckedOK Pre have ads?

Neither ProWarm nor CheckedOK Pre shows ads.

### Which is updated more often, ProWarm or CheckedOK Pre?

ProWarm ships an update every 10 months, and CheckedOK Pre every 7 months. Most recently, ProWarm was updated on June 9, 2026 and CheckedOK Pre on May 17, 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.*