# ESA Alumni vs BDB

The clearest difference is update cadence: BDB at fortnightly against ESA Alumni's every 5 weeks. ESA Alumni's advantage is iOS requirement (15.0 vs 17.0). 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.

ESA Alumni ships an update every 5 weeks, BDB fortnightly. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | ESA Alumni | BDB |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Size | 71 MB | 36 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [ESA Business School](https://appshunter.io/developer/1699173587) | [Angel Geoffroy](https://appshunter.io/developer/1794193605) |

## What reviewers say

### ESA Alumni

[App page](https://appshunter.io/ios/app/esa-alumni/id6453140819)

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

**In-app purchases:** none


### BDB

[App page](https://appshunter.io/ios/app/bdb/id6742051629)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is ESA Alumni free?

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

### Is BDB free?

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

### Do ESA Alumni or BDB have ads?

Neither ESA Alumni nor BDB shows ads.

### Which is updated more often, ESA Alumni or BDB?

ESA Alumni ships an update every 5 weeks, and BDB fortnightly. Most recently, ESA Alumni was updated on October 30, 2026 and BDB on October 28, 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.*