# Calcat vs Noahs

The clearest difference is ads: Noahs at none against Calcat's shown. Noahs also leads on update cadence (monthly vs every 12 months) and iOS requirement (12.0 vs 15.6). On price, 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.

Calcat ships an update every 12 months, Noahs monthly. The most recent releases landed on September 21, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Calcat | Noahs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (105 ratings)](https://appshunter.io/ios/app/calcat/id1375207811/reviews)** | — |
| Number of ratings | **105** | — |
| Positive reviews | 83.7% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 12 months | **Monthly** |
| Monetization | Ad-supported | — |
| Size | 7 MB | 67 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [sky-nexus Inc.](https://appshunter.io/developer/512522554) | [Kavin Nitasnajarukul](https://appshunter.io/developer/1469331007) |

## What reviewers say

### Calcat

[App page](https://appshunter.io/ios/app/calcat/id1375207811)

A calculator app designed for cat lovers, featuring a cute cat sound when calculations are complete. It prioritizes ease of use with a clear display of input and results, allowing users to review their steps and correct mistakes.

**Highlights:** Cat sound on calculation, Easy-to-use interface, View calculation history, Input process display, General calculator mode, Function calculator mode

**In-app purchases:** none


### Noahs

[App page](https://appshunter.io/ios/app/noahs/id1644602740)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calcat free?

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

### Is Noahs free?

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

### Do Calcat or Noahs have ads?

Calcat shows ads; Noahs does not.

### Which is updated more often, Calcat or Noahs?

Calcat ships an update every 12 months, and Noahs monthly. Most recently, Calcat was updated on September 21, 2026 and Noahs on September 19, 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.*