# RTB BLX vs EGD2021

The clearest difference is update cadence: RTB BLX at every 7 months against EGD2021's every 25 months. EGD2021's advantage is iOS requirement (14.0 vs 16.6). 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.

RTB BLX ships an update every 7 months, EGD2021 every 25 months. The most recent releases landed on October 11, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | RTB BLX | EGD2021 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 25 months |
| Size | 35 MB | 1 MB |
| Requires iOS | 16.6 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [RTB Elektronik](https://appshunter.io/developer/1033533477) | [Shiu Yin Yuen](https://appshunter.io/developer/1569119882) |

## What reviewers say

### RTB BLX

[App page](https://appshunter.io/ios/app/rtb-blx/id1524448175)

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

**In-app purchases:** none


### EGD2021

[App page](https://appshunter.io/ios/app/egd2021/id1559438204)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RTB BLX free?

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

### Is EGD2021 free?

EGD2021 is free to download, with no in-app purchases.

### Do RTB BLX or EGD2021 have ads?

Neither RTB BLX nor EGD2021 shows ads.

### Which is updated more often, RTB BLX or EGD2021?

RTB BLX ships an update every 7 months, and EGD2021 every 25 months. Most recently, RTB BLX was updated on October 11, 2026 and EGD2021 on October 3, 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.*