# Knowledge Gym vs HdBA App

The clearest difference is iOS requirement: Knowledge Gym at 12.1 against HdBA App's 16.0. 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.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 12, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Knowledge Gym | HdBA App |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | — | Ad-supported |
| Size | 68 MB | 69 MB |
| Requires iOS | **12.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Blue Elephants Solutions Pte. Ltd.](https://appshunter.io/developer/1491903274) | [UniNow GmbH](https://appshunter.io/developer/1099302123) |

## What reviewers say

### Knowledge Gym

[App page](https://appshunter.io/ios/app/knowledge-gym/id1567565759)

**Features:** macOS Compatibility

**In-app purchases:** none


### HdBA App

[App page](https://appshunter.io/ios/app/hdba-app/id1611531303)

This app supports students with daily university life, offering tools for managing schedules, tracking grades, and accessing learning materials. It provides quick access to library resources and canteen menus, streamlining campus activities.

**Highlights:** Timetable management, Grade point average calculation, Push notifications for new grades, Access to e-learning materials (ILIAS), Library access, Canteen menu information

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Knowledge Gym free?

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

### Is HdBA App free?

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

### Do Knowledge Gym or HdBA App have ads?

Neither Knowledge Gym nor HdBA App shows ads.

### Which is updated more often, Knowledge Gym or HdBA App?

Knowledge Gym ships an update every 3 weeks, and HdBA App every 3 weeks. Most recently, Knowledge Gym was updated on September 12, 2026 and HdBA App on September 13, 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.*