# iService/ DeviceOn vs Sudoku Hacker

The clearest difference is ads: iService/ DeviceOn at none against Sudoku Hacker's shown. Sudoku Hacker's advantage is iOS requirement (13.0 vs 15.6). On price, 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 | iService/ DeviceOn | Sudoku Hacker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | — |
| Size | 27 MB | 20 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Advantech](https://appshunter.io/developer/413213069) | [Japality Limited](https://appshunter.io/developer/1574046707) |

## What reviewers say

### iService/ DeviceOn

[App page](https://appshunter.io/ios/app/iservice-deviceon/id6461349429)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sudoku Hacker

[App page](https://appshunter.io/ios/app/sudoku-hacker/id6751965362)

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

**In-app purchases:** none


## Frequently asked questions

### Is iService/ DeviceOn free?

iService/ DeviceOn is free to download, with no in-app purchases.

### Is Sudoku Hacker free?

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

### Do iService/ DeviceOn or Sudoku Hacker have ads?

Sudoku Hacker shows ads; iService/ DeviceOn does not.

---

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