# BuB vs PAX

The clearest difference is ads: PAX at none against BuB's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. BuB sells 28 one-off in-app purchases and PAX sells 41 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

BuB ships an update every 12 months, PAX every 13 months. The most recent releases landed on September 14, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | BuB | PAX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 12 months** | Every 13 months |
| Size | 161 MB | 162 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Berufsverband Information Bibliothek e. V.](https://appshunter.io/developer/1124404291) | [Verlag Passauer Bistumsblatt GmbH](https://appshunter.io/developer/1595081792) |

## What reviewers say

### BuB

[App page](https://appshunter.io/ios/app/bub/id1124404292)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (28)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ausgabe 06/2019 | $10.99 | one-time |
| Ausgabe 05/2019 | $10.99 | one-time |
| Ausgabe 02-03/2023 | $12.99 | one-time |
| Ausgabe 04/2023 | $14.99 | one-time |
| Ausgabe 05/2023 | $14.99 | one-time |
| Ausgabe 06/2023 | $14.99 | one-time |
| Ausgabe 07/2023 | $14.99 | one-time |
| Ausgabe 08-09/2023 | $14.99 | one-time |
| Ausgabe 10/2023 | $14.99 | one-time |
| Ausgabe 11/2023 | $14.99 | one-time |
| Ausgabe 12/2023 | $14.99 | one-time |
| Ausgabe 01/2024 | $14.99 | one-time |
| Ausgabe 04/2024 | $14.99 | one-time |
| Ausgabe 05/2024 | $14.99 | one-time |
| BuB Ausgabe 02-03/2026 | $14.99 | one-time |
| Ausgabe 04/2025 | $14.99 | one-time |
| Ausgabe 06/2025 | $14.99 | one-time |
| Ausgabe 05/2025 | $14.99 | one-time |
| Ausgabe 08-09/2025 | $14.99 | one-time |
| Ausgabe 07/2025 | $14.99 | one-time |
| Ausgabe 10/2025 | $14.99 | one-time |
| Ausgabe 11/2025 | $14.99 | one-time |
| Ausgabe 02-03/2025 | $14.99 | one-time |
| Ausgabe 01/2025 | $14.99 | one-time |
| Ausgabe 12/2024 | $14.99 | one-time |
| Ausgabe 11/2024 | $14.99 | one-time |
| Ausgabe 06/2024 | $14.99 | one-time |
| Ausgabe 02-03/2024 | $15.99 | one-time |


### PAX

[App page](https://appshunter.io/ios/app/pax/id1595081790)

**Features:** macOS Compatibility

**In-app purchases (41)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ausgabe 42/2023 | $1.99 | one-time |
| Ausgabe 45/2023 | $1.99 | one-time |
| Ausgabe 35/2023 | $1.99 | one-time |
| Ausgabe 49/2023 | $1.99 | one-time |
| Ausgabe 51/2023 | $1.99 | one-time |
| Ausgabe 52/2023 | $1.99 | one-time |
| Ausgabe 48/2023 | $1.99 | one-time |
| Ausgabe 46/2023 | $1.99 | one-time |
| Ausgabe 47/2023 | $1.99 | one-time |
| Ausgabe 50/2023 | $1.99 | one-time |
| Ausgabe 43/2024 | $2.99 | one-time |
| Ausgabe 47/2024 | $2.99 | one-time |
| Ausgabe 45/2024 | $2.99 | one-time |
| Ausgabe 44/2024 | $2.99 | one-time |
| Ausgabe 46/2024 | $2.99 | one-time |
| Ausgabe 49/2024 | $2.99 | one-time |
| Ausgabe 48/2024 | $2.99 | one-time |
| Ausgabe 50/2024 | $2.99 | one-time |
| Ausgabe 22/2024 | $2.99 | one-time |
| Ausgabe 26/2024 | $2.99 | one-time |
| Ausgabe 48/2026 | $2.99 | one-time |
| Ausgabe 45/2026 | $2.99 | one-time |
| Ausgabe 44/2026 | $2.99 | one-time |
| Ausgabe 47/2026 | $2.99 | one-time |
| Ausgabe 46/2026 | $2.99 | one-time |
| Ausgabe 49/2026 | $2.99 | one-time |
| Ausgabe 52/2026 | $2.99 | one-time |
| Ausgabe 50/2026 | $2.99 | one-time |
| Ausgabe 51/2026 | $2.99 | one-time |
| Ausgabe 53/2026 | $2.99 | one-time |
| Ausgabe 01/2026 | $2.99 | one-time |
| Ausgabe 41/2025 | $2.99 | one-time |
| Ausgabe 43/2025 | $2.99 | one-time |
| Ausgabe 48/2025 | $2.99 | one-time |
| Ausgabe 45/2025 | $2.99 | one-time |
| Ausgabe 46/2025 | $2.99 | one-time |
| Ausgabe 49/2025 | $2.99 | one-time |
| Ausgabe 47/2025 | $2.99 | one-time |
| Ausgabe 51/2025 | $2.99 | one-time |
| Ausgabe 50/2025 | $2.99 | one-time |
| Ausgabe 52/2025 | $2.99 | one-time |


## Frequently asked questions

### Is BuB free?

BuB is free to download, with in-app purchases available.

### Is PAX free?

PAX is free to download, with in-app purchases available.

### Do BuB or PAX have ads?

BuB shows ads; PAX does not.

### Which is updated more often, BuB or PAX?

BuB ships an update every 12 months, and PAX every 13 months. Most recently, BuB was updated on September 14, 2026 and PAX on September 8, 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.*