# But vs E

The clearest difference is update cadence: But at every 5 days against E's every 5 weeks. On price, ads, 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.

But ships an update every 5 days, E every 5 weeks. The most recent releases landed on October 11, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | But | E |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 5 weeks |
| Size | 34 MB | 81 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [BUTKON ASANSOR MUHENDISLIK INSAAT DOGAL GAZ GIDA SANAYI VE TICARET ANONIM SIRKETI](https://appshunter.io/developer/1617157174) | [深圳市英威腾电气股份有限公司](https://appshunter.io/developer/1012943436) |

## What reviewers say

### But

[App page](https://appshunter.io/ios/app/but-call/id1617157172)

**Features:** macOS Compatibility

**In-app purchases:** none


### E

[App page](https://appshunter.io/ios/app/e-debugpro/id6474985537)

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

**In-app purchases:** none


## Frequently asked questions

### Is But free?

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

### Is E free?

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

### Do But or E have ads?

Neither But nor E shows ads.

### Which is updated more often, But or E?

But ships an update every 5 days, and E every 5 weeks. Most recently, But was updated on October 11, 2026 and E on October 10, 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.*