# SAJ vs iBlueTool

The clearest difference is update cadence: iBlueTool at fortnightly against SAJ's every 23 months. SAJ's advantage is iOS requirement (8.0 vs 12.0). 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.

SAJ ships an update every 23 months, iBlueTool fortnightly. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | SAJ | iBlueTool |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 23 months | **Fortnightly** |
| Size | 152 MB | 21 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SAJ Instrument Ab](https://appshunter.io/developer/962246290) | [Radiance Instruments Ltd](https://appshunter.io/developer/1239283044) |

## What reviewers say

### SAJ

[App page](https://appshunter.io/ios/app/saj-dms-calib/id962246291)

**Features:** macOS Compatibility

**In-app purchases:** none


### iBlueTool

[App page](https://appshunter.io/ios/app/ibluetool/id1239283045)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SAJ free?

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

### Is iBlueTool free?

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

### Do SAJ or iBlueTool have ads?

Neither SAJ nor iBlueTool shows ads.

### Which is updated more often, SAJ or iBlueTool?

SAJ ships an update every 23 months, and iBlueTool fortnightly. Most recently, SAJ was updated on October 7, 2026 and iBlueTool on October 6, 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.*