# Wattson vs CuCalc

The clearest difference is update cadence: Wattson at every 5 days against CuCalc's every 3 weeks. On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Wattson sells 1 one-off in-app purchase and CuCalc sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Wattson ships an update every 5 days, CuCalc every 3 weeks. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Wattson | CuCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | — |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Size | 44 MB | 3 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | **iPhone** | — |
| Age rating | 17+ | 4+ |
| Developer | [Marin Martinovic](https://appshunter.io/developer/1871459610) | [ANDELKO PADOVIC](https://appshunter.io/developer/1893648829) |

## What reviewers say

### Wattson

[App page](https://appshunter.io/ios/app/wattson-electrical-calculator/id6760766587)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Wattson Pro | $5.99 | one-time |


### CuCalc

[App page](https://appshunter.io/ios/app/cucalc/id6762284389)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CuCalc Pro | $9.99 | one-time |


## Frequently asked questions

### Is Wattson free?

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

### Is CuCalc free?

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

### Which is updated more often, Wattson or CuCalc?

Wattson ships an update every 5 days, and CuCalc every 3 weeks. Most recently, Wattson was updated on October 31, 2026 and CuCalc on October 24, 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.*