# VAT Calculator + vs CostWatt

The clearest difference is price: VAT Calculator + at Free against CostWatt's $0.99. VAT Calculator + also leads on update cadence (every 3 weeks vs every 11 months) and device support. On in-app purchases there is nothing between them.

VAT Calculator + is free to download; CostWatt costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

VAT Calculator + ships an update every 3 weeks, CostWatt every 11 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | VAT Calculator + | CostWatt |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | **Every 3 weeks** | Every 11 months |
| Size | 4 MB | 3 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [MUSTAFA ALTINSOY](https://appshunter.io/developer/1683031567) | [Rick Twilling](https://appshunter.io/developer/1790344644) |

## What reviewers say

### VAT Calculator +

[App page](https://appshunter.io/ios/app/vat-calculator-plus/id6450519295)

**Features:** macOS Compatibility

**In-app purchases:** none


### CostWatt

[App page](https://appshunter.io/ios/app/costwatt/id6590602388)

**In-app purchases:** none


## Frequently asked questions

### Is VAT Calculator + free?

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

### Is CostWatt free?

CostWatt costs $0.99, with no in-app purchases.

### Which is updated more often, VAT Calculator + or CostWatt?

VAT Calculator + ships an update every 3 weeks, and CostWatt every 11 months. Most recently, VAT Calculator + was updated on November 3, 2026 and CostWatt on October 30, 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.*