# Rieter Calculator vs Cott

The clearest difference is update cadence: Cott at every 4 months against Rieter Calculator's every 26 months. Rieter Calculator's advantage is iOS requirement (9.1 vs 13.0). 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.

Rieter Calculator ships an update every 26 months, Cott every 4 months. The most recent releases landed on October 8, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Rieter Calculator | Cott |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (2 ratings)](https://appshunter.io/ios/app/rieter-calculator/id797533098/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 4 months** |
| Monetization | Free | — |
| Size | 5 MB | 50 MB |
| Requires iOS | **9.1** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rieter Machine Works Ltd.](https://appshunter.io/developer/733788044) | [The Cotton Corporation Of India Limited](https://appshunter.io/developer/1434286893) |

## What reviewers say

### Rieter Calculator

[App page](https://appshunter.io/ios/app/rieter-calculator/id797533098)

This utility app converts textile units like yarn count between different systems. It also includes basic calculator functions for everyday use.

**Highlights:** Textile unit conversion, Yarn count conversion (Ne to Nm), Basic calculator functions

**Features:** macOS Compatibility

**In-app purchases:** none


### Cott

[App page](https://appshunter.io/ios/app/cott-ally/id1434286894)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Rieter Calculator free?

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

### Is Cott free?

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

### Do Rieter Calculator or Cott have ads?

Neither Rieter Calculator nor Cott shows ads.

### Which is updated more often, Rieter Calculator or Cott?

Rieter Calculator ships an update every 26 months, and Cott every 4 months. Most recently, Rieter Calculator was updated on October 8, 2026 and Cott on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*