# BTU Radiator Calculator vs My EO2

The clearest difference is price: My EO2 at Free against BTU Radiator Calculator's $0.99. My EO2 also leads on iOS requirement (12.0 vs 26.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

My EO2 is free to download; BTU Radiator Calculator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 21, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | BTU Radiator Calculator | My EO2 |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 1 MB | 52 MB |
| Requires iOS | 26.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Plan CD](https://appshunter.io/developer/309570233) | [EO2 Evse Private Limited](https://appshunter.io/developer/1686528212) |

## What reviewers say

### BTU Radiator Calculator

[App page](https://appshunter.io/ios/app/btu-radiator-calculator/id1441620006)

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

**In-app purchases:** none


### My EO2

[App page](https://appshunter.io/ios/app/my-eo2/id6448833154)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BTU Radiator Calculator free?

BTU Radiator Calculator costs $0.99, with no in-app purchases.

### Is My EO2 free?

My EO2 is free to download, with no in-app purchases.

### Do BTU Radiator Calculator or My EO2 have ads?

Neither BTU Radiator Calculator nor My EO2 shows ads.

### Which is updated more often, BTU Radiator Calculator or My EO2?

BTU Radiator Calculator ships an update every 3 weeks, and My EO2 every 3 weeks. Most recently, BTU Radiator Calculator was updated on October 21, 2026 and My EO2 on October 3, 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.*