# GerBook vs HBT service

The clearest difference is iOS requirement: GerBook at 13.0 against HBT service's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

GerBook ships an update weekly, HBT service every 2 weeks. The most recent releases landed on October 25, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | GerBook | HBT service |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Size | 61 MB | 23 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Goodtech](https://appshunter.io/developer/1627993182) | [Bayanmunkh Gungaajav](https://appshunter.io/developer/1629575117) |

## What reviewers say

### GerBook

[App page](https://appshunter.io/ios/app/gerbook/id6739825550)

**In-app purchases:** none


### HBT service

[App page](https://appshunter.io/ios/app/hbt-service/id6752219653)

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

**In-app purchases:** none


## Frequently asked questions

### Is GerBook free?

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

### Is HBT service free?

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

### Do GerBook or HBT service have ads?

Neither GerBook nor HBT service shows ads.

### Which is updated more often, GerBook or HBT service?

GerBook ships an update weekly, and HBT service every 2 weeks. Most recently, GerBook was updated on October 25, 2026 and HBT service on October 6, 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.*