# Bivatek Thread Calculator vs DatumLab

The clearest difference is iOS requirement: Bivatek Thread Calculator at 15.1 against DatumLab's 17.0. 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.

## The numbers

| Metric | Bivatek Thread Calculator | DatumLab |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 days | — |
| Size | 41 MB | 3 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Vionni Software L.L.C-FZ](https://appshunter.io/developer/1894468328) | [建东 刘](https://appshunter.io/developer/1896489302) |

## What reviewers say

### Bivatek Thread Calculator

[App page](https://appshunter.io/ios/app/bivatek-thread-calculator/id6762510774)

**Features:** macOS Compatibility

**In-app purchases:** none


### DatumLab

[App page](https://appshunter.io/ios/app/datumlab/id6780406607)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Bivatek Thread Calculator free?

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

### Is DatumLab free?

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

### Do Bivatek Thread Calculator or DatumLab have ads?

Neither Bivatek Thread Calculator nor DatumLab shows ads.

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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.*