# OnGrade Pre vs DiggerSafe

The clearest difference is in-app purchases: OnGrade Pre at none against DiggerSafe's 6. OnGrade Pre also leads on update cadence (weekly vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. DiggerSafe sells 6 in-app purchases, starting at $4.99 per month. OnGrade Pre asks for nothing beyond the download.

OnGrade Pre ships an update weekly, DiggerSafe every 3 weeks. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | OnGrade Pre | DiggerSafe |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 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


### DiggerSafe

[App page](https://appshunter.io/ios/app/diggersafe/id6778399083)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DiggerSafe Starter — Monthly | $4.99 | per month |
| DiggerSafe Basic — Monthly | $12.99 | per month |
| DiggerSafe Pro — Monthly | $29.99 | per month |
| DiggerSafe Starter — Yearly | $44.99 | per year |
| DiggerSafe Basic — Yearly | $99.00 | per year |
| DiggerSafe Pro — Yearly | $249.00 | per year |


## Frequently asked questions

### Is OnGrade Pre free?

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

### Is DiggerSafe free?

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

### Do OnGrade Pre or DiggerSafe have ads?

Neither OnGrade Pre nor DiggerSafe shows ads.

### Which is updated more often, OnGrade Pre or DiggerSafe?

OnGrade Pre ships an update weekly, and DiggerSafe every 3 weeks. Most recently, OnGrade Pre was updated on October 31, 2026 and DiggerSafe on November 10, 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.*