# Watts vs Kiira.app

The clearest difference is update cadence: Kiira.app at monthly against Watts's every 4 months. Watts's advantage is iOS requirement (8.0 vs 14.0). 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.

Watts ships an update every 4 months, Kiira.app monthly. The most recent releases landed on October 18, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Watts | Kiira.app |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/watts/id958596712/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Free | — |
| Size | 1 MB | 37 MB |
| Requires iOS | **8.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Code Smart LLC](https://appshunter.io/developer/460440673) | [Scandium Holding Oy](https://appshunter.io/developer/1689101748) |

## What reviewers say

### Watts

[App page](https://appshunter.io/ios/app/watts/id958596712)

Calculate the cost of running electrical devices over time. This simple tool helps you understand your energy consumption expenses.

**Highlights:** Calculate device running costs, Easy to use interface, Track energy expenses over time, Simple utility tool

**Features:** macOS Compatibility

**In-app purchases:** none


### Kiira.app

[App page](https://appshunter.io/ios/app/kiiraapp/id6680186810)

**In-app purchases:** none


## Frequently asked questions

### Is Watts free?

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

### Is Kiira.app free?

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

### Do Watts or Kiira.app have ads?

Neither Watts nor Kiira.app shows ads.

### Which is updated more often, Watts or Kiira.app?

Watts ships an update every 4 months, and Kiira.app monthly. Most recently, Watts was updated on October 18, 2026 and Kiira.app on October 11, 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.*