# eID vs BTW Calculator Pro

The clearest difference is price: eID at Free against BTW Calculator Pro's $1.99. eID also leads on iOS requirement (15.0 vs 17.0). BTW Calculator Pro's advantage is update cadence (every 6 weeks vs every 16 months). On ads, in-app purchases and device support there is nothing between them.

eID is free to download; BTW Calculator Pro costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

eID ships an update every 16 months, BTW Calculator Pro every 6 weeks. The most recent releases landed on October 24, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | eID | BTW Calculator Pro |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 6 weeks** |
| Size | 22 MB | 13 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Metanous](https://appshunter.io/developer/475073514) | [Ryan Rook](https://appshunter.io/developer/1524236601) |

## What reviewers say

### eID

[App page](https://appshunter.io/ios/app/eid-scanner-pro/id1448462291)

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

**In-app purchases:** none


### BTW Calculator Pro

[App page](https://appshunter.io/ios/app/btw-calculator-pro/id1535517733)

**In-app purchases:** none


## Frequently asked questions

### Is eID free?

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

### Is BTW Calculator Pro free?

BTW Calculator Pro costs $1.99, with no in-app purchases.

### Do eID or BTW Calculator Pro have ads?

Neither eID nor BTW Calculator Pro shows ads.

### Which is updated more often, eID or BTW Calculator Pro?

eID ships an update every 16 months, and BTW Calculator Pro every 6 weeks. Most recently, eID was updated on October 24, 2026 and BTW Calculator Pro 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.*