# VAT CheckMachine vs Calculator L + Twin Plus App #

The clearest difference is in-app purchases: VAT CheckMachine at none against Calculator L + Twin Plus App #'s 1. VAT CheckMachine also leads on ads (none vs shown) and iOS requirement (9.0 vs 12.0). Calculator L + Twin Plus App #'s advantage is review sentiment (25% vs 0%). On price, update cadence and device support there is nothing between them.

Both are free to download. Calculator L + Twin Plus App # sells 1 one-off in-app purchase. VAT CheckMachine asks for nothing beyond the download.

VAT CheckMachine ships an update every 2 months, Calculator L + Twin Plus App # every 6 weeks. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | VAT CheckMachine | Calculator L + Twin Plus App # |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (23 ratings)](https://appshunter.io/ios/app/calculator-l-plus-twin-plus-app/id1380586918/reviews)** |
| Number of ratings | — | **23** |
| Positive reviews | 0.0% of reviews | **25.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 11 MB | 20 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Escape Tech Ltd](https://appshunter.io/developer/1435187355) | [Satomi Uchida](https://appshunter.io/developer/1340507560) |

## What reviewers say

### VAT CheckMachine

[App page](https://appshunter.io/ios/app/vat-checkmachine/id522679811)

This free utility app validates EU VAT numbers instantly and calculates VAT amounts for all EU states. It offers on-the-fly correctness testing and keeps a history of checked numbers for easy reference and sharing.

**Highlights:** Instant EU VAT number validation, On-the-fly correctness testing, VAT and Net/Gross amount calculation, Supports all 28 EU states, History of checked numbers, Sharing of checked numbers

**In-app purchases:** none


### Calculator L + Twin Plus App #

[App page](https://appshunter.io/ios/app/calculator-l-plus-twin-plus-app/id1380586918)

This utility app offers a dual calculator with persistent data and a comprehensive calculation history. Customize the appearance with various color themes and choose from multiple global comma formats for precise number display.

**Highlights:** Twin calculator functionality, Calculation history log, Multiple color themes, Global comma formatting options, Data persistence

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Version | $2.99 | one-time |


## Frequently asked questions

### Is VAT CheckMachine free?

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

### Is Calculator L + Twin Plus App # free?

Calculator L + Twin Plus App # is free to download, with in-app purchases available.

### Do VAT CheckMachine or Calculator L + Twin Plus App # have ads?

Calculator L + Twin Plus App # shows ads; VAT CheckMachine does not.

### Which is updated more often, VAT CheckMachine or Calculator L + Twin Plus App #?

VAT CheckMachine ships an update every 2 months, and Calculator L + Twin Plus App # every 6 weeks. Most recently, VAT CheckMachine was updated on November 6, 2026 and Calculator L + Twin Plus App # on November 2, 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.*