# OnGrade Pre vs Digger safe

The clearest difference is update cadence: OnGrade Pre at weekly against Digger safe's every 6 weeks. 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.

OnGrade Pre ships an update weekly, Digger safe every 6 weeks. The most recent releases landed on October 13, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | OnGrade Pre | Digger safe |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 6 weeks |
| Size | 35 MB | 36 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [On Grade Earthworks Pty Ltd](https://appshunter.io/developer/6777587583) | [Darren Gray](https://appshunter.io/developer/6778399085) |

## What reviewers say

### OnGrade Pre

[App page](https://appshunter.io/ios/app/ongrade-pre-start-system/id6777587581)

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

**In-app purchases:** none


### Digger safe

[App page](https://appshunter.io/ios/app/digger-safe/id6778399083)

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

**In-app purchases:** none


## Frequently asked questions

### Is OnGrade Pre free?

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

### Is Digger safe free?

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

### Do OnGrade Pre or Digger safe have ads?

Neither OnGrade Pre nor Digger safe shows ads.

### Which is updated more often, OnGrade Pre or Digger safe?

OnGrade Pre ships an update weekly, and Digger safe every 6 weeks. Most recently, OnGrade Pre was updated on October 13, 2026 and Digger safe on October 12, 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.*