# А vs PS 331 BK

The clearest difference is update cadence: PS 331 BK at monthly against А's every 15 months. PS 331 BK also leads on iOS requirement (13.0 vs 15.6). 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.

А ships an update every 15 months, PS 331 BK monthly. The most recent releases landed on September 22, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | А | PS 331 BK |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Monthly** |
| Size | 134 MB | 79 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Институт перевода Библии](https://appshunter.io/developer/1199819673) | [The Detective WenJian Liu School of Civics and Entrepreneurship](https://appshunter.io/developer/1785707258) |

## What reviewers say

### А

[App page](https://appshunter.io/ios/app/i/id1590477634)

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

**In-app purchases:** none


### PS 331 BK

[App page](https://appshunter.io/ios/app/ps-331-bk/id6739505270)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is А free?

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

### Is PS 331 BK free?

PS 331 BK is free to download, with no in-app purchases.

### Do А or PS 331 BK have ads?

Neither А nor PS 331 BK shows ads.

### Which is updated more often, А or PS 331 BK?

А ships an update every 15 months, and PS 331 BK monthly. Most recently, А was updated on September 22, 2026 and PS 331 BK on September 12, 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.*