# OFF vs Blackout Prepper

The clearest difference is in-app purchases: OFF at none against Blackout Prepper's 9. OFF also leads on ads (none vs shown) and update cadence (daily vs every 2 days). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Blackout Prepper sells 9 in-app purchases, starting at $0.99 per month. OFF asks for nothing beyond the download.

OFF ships an update daily, Blackout Prepper every 2 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | OFF | Blackout Prepper |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Every 2 days |
| Monetization | — | Free with in-app purchases |
| Size | 114 MB | 293 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Cross Works](https://appshunter.io/developer/1754967433) | [christian kohler](https://appshunter.io/developer/1835131065) |

## What reviewers say

### OFF

[App page](https://appshunter.io/ios/app/off-grid/id6505067056)

**Features:** macOS Compatibility

**In-app purchases:** none


### Blackout Prepper

[App page](https://appshunter.io/ios/app/blackout-prepper/id6754850234)

Prepare for emergencies like power outages with this app's comprehensive tools. Manage supplies, track family information, access offline guides, and utilize navigation features. Connect with a community for real-time updates and support.

**Highlights:** Emergency supply management, Offline guides and tools, Family profiles and document vault, Offline maps and GPS navigation, Community alerts and reporting, Preparedness score

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zugang – monatlich | $0.99 | per month |
| Zugang - monatlich | $2.99 | per month |
| Zugang – jährlich | $8.99 | per year |
| Zugang - jährlich | $12.99 | per year |
| Werbung dauerhaft entfernen | $4.99 | one-time |
| Blackout Prepper Lifetime | $8.99 | one-time |
| Blackout Prepper Lifetime | $12.99 | one-time |
| Blackout Prepper Lifetime | $22.99 | one-time |
| Lifetime access | $24.99 | one-time |


## Frequently asked questions

### Is OFF free?

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

### Is Blackout Prepper free?

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

### Do OFF or Blackout Prepper have ads?

Blackout Prepper shows ads; OFF does not.

### Which is updated more often, OFF or Blackout Prepper?

OFF ships an update daily, and Blackout Prepper every 2 days. Most recently, OFF was updated on October 25, 2026 and Blackout Prepper on October 28, 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.*