# Main Data Sub vs SK Data Tool

The clearest difference is update cadence: SK Data Tool at every 9 days against Main Data Sub's every 3 months. 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.

Main Data Sub ships an update every 3 months, SK Data Tool every 9 days. The most recent releases landed on October 1, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Main Data Sub | SK Data Tool |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 9 days** |
| Size | 76 MB | 26 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Kiziani Hub](https://appshunter.io/developer/1751074880) | [BLUEFIN SOLUTIONS LIMITED](https://appshunter.io/developer/1466359151) |

## What reviewers say

### Main Data Sub

[App page](https://appshunter.io/ios/app/main-data-sub/id6661032147)

**Features:** macOS Compatibility

**In-app purchases:** none


### SK Data Tool

[App page](https://appshunter.io/ios/app/sk-data-tool/id6746336343)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Main Data Sub free?

Main Data Sub is free to download, with no in-app purchases.

### Is SK Data Tool free?

SK Data Tool is free to download, with no in-app purchases.

### Do Main Data Sub or SK Data Tool have ads?

Neither Main Data Sub nor SK Data Tool shows ads.

### Which is updated more often, Main Data Sub or SK Data Tool?

Main Data Sub ships an update every 3 months, and SK Data Tool every 9 days. Most recently, Main Data Sub was updated on October 1, 2026 and SK Data Tool on September 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.*