# Watts Up? vs Wattage Conversion

The clearest difference is ads: Wattage Conversion at none against Watts Up?'s shown. Wattage Conversion also leads on update cadence (monthly vs every 32 months). Watts Up?'s advantage is iOS requirement (13.0 vs 15.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Watts Up? sells 1 one-off in-app purchase and Wattage Conversion sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Watts Up? ships an update every 32 months, Wattage Conversion monthly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Watts Up? | Wattage Conversion |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (15 ratings)](https://appshunter.io/ios/app/watts-up/id1039678400/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 32 months | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 37 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Eric Kasnetsis](https://appshunter.io/developer/942810412) | [akira ohmachi](https://appshunter.io/developer/1338624340) |

## What reviewers say

### Watts Up?

[App page](https://appshunter.io/ios/app/watts-up/id1039678400)

Easily determine microwave cooking times by inputting recipe details and your microwave's wattage. The app automatically saves your microwave's power for future use. Optimized for high-resolution displays on supported devices.

**Highlights:** Calculate recommended cook time, Input recipe cook time, Input recipe microwave wattage, Input your microwave wattage, Saves microwave wattage automatically, High resolution graphics

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### Wattage Conversion

[App page](https://appshunter.io/ios/app/wattage-conversion/id6473688997)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Watts Up? free?

Watts Up? is free to download, with in-app purchases available.

### Is Wattage Conversion free?

Wattage Conversion is free to download, with in-app purchases available.

### Do Watts Up? or Wattage Conversion have ads?

Watts Up? shows ads; Wattage Conversion does not.

### Which is updated more often, Watts Up? or Wattage Conversion?

Watts Up? ships an update every 32 months, and Wattage Conversion monthly. Most recently, Watts Up? was updated on October 24, 2026 and Wattage Conversion on October 25, 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.*