# zeptrion vs BT

The clearest difference is iOS requirement: BT at 7.1 against zeptrion's 15.0. 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.

## The numbers

| Metric | zeptrion | BT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | — |
| Size | 14 MB | 9 MB |
| Requires iOS | 15.0 | **7.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Feller AG](https://appshunter.io/developer/525095492) | [Mobile Labs](https://appshunter.io/developer/950993552) |

## What reviewers say

### zeptrion

[App page](https://appshunter.io/ios/app/zeptrion/id877577147)

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

**In-app purchases:** none


### BT

[App page](https://appshunter.io/ios/app/bt-home-20/id1093161325)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is zeptrion free?

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

### Is BT free?

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

### Do zeptrion or BT have ads?

Neither zeptrion nor BT shows ads.

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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.*