# MyTrBK TM vs CALC ToolBox

The clearest difference is in-app purchases: MyTrBK TM at none against CALC ToolBox's 1. MyTrBK TM also leads on update cadence (every 2 days vs weekly) and iOS requirement (11.0 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. CALC ToolBox sells 1 one-off in-app purchase. MyTrBK TM asks for nothing beyond the download.

MyTrBK TM ships an update every 2 days, CALC ToolBox weekly. The most recent releases landed on October 25, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | MyTrBK TM | CALC ToolBox |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Weekly |
| Size | 17 MB | 5 MB |
| Requires iOS | **11.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [David Fowler](https://appshunter.io/developer/918285388) | [1BIGRIG Ltd](https://appshunter.io/developer/1792073283) |

## What reviewers say

### MyTrBK TM

[App page](https://appshunter.io/ios/app/mytrbk-tm/id1491062350)

**Features:** macOS Compatibility

**In-app purchases:** none


### CALC ToolBox

[App page](https://appshunter.io/ios/app/calc-toolbox/id6741718195)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


## Frequently asked questions

### Is MyTrBK TM free?

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

### Is CALC ToolBox free?

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

### Do MyTrBK TM or CALC ToolBox have ads?

Neither MyTrBK TM nor CALC ToolBox shows ads.

### Which is updated more often, MyTrBK TM or CALC ToolBox?

MyTrBK TM ships an update every 2 days, and CALC ToolBox weekly. Most recently, MyTrBK TM was updated on October 25, 2026 and CALC ToolBox on October 30, 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.*