# Prepper AI vs Custos

Prepper AI and Custos are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Prepper AI sells 3 in-app purchases, starting at $9.99 per month and Custos sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Prepper AI ships an update every 2 weeks, Custos fortnightly. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Prepper AI | Custos |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (30 ratings)](https://appshunter.io/ios/app/prepper-ai/id6749353554/reviews)** | — |
| Number of ratings | **30** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 2.0 GB | 168 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [A-tech Co. LLC](https://appshunter.io/developer/1807428581) | [Emil Deak](https://appshunter.io/developer/1883312248) |

## What reviewers say

### Prepper AI

[App page](https://appshunter.io/ios/app/prepper-ai/id6749353554)

This app provides offline survival knowledge and maps, powered by an AI trained on over 74 survival manuals. Get expert answers to your preparedness questions without an internet connection, with comprehensive offline maps for all 50 U.S. states.

**Highlights:** AI-powered survival advice, Offline maps for all 50 US states, No internet or account required, Knowledge from 74+ survival manuals, Privacy-focused design, Up-to-date emergency protocols

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Access | $9.99 | per month |
| Annual Plan | $39.99 | per year |
| Prepper AI (Lifetime Access) | $149.99 | one-time |


### Custos

[App page](https://appshunter.io/ios/app/custos-survival-prepper/id6760218134)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Custos Premium Monthly | $1.99 | per month |
| Custos Premium Jährlich | $12.99 | per year |
| Custos Premium Lifetime | $22.99 | one-time |


## Frequently asked questions

### Is Prepper AI free?

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

### Is Custos free?

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

### Do Prepper AI or Custos have ads?

Neither Prepper AI nor Custos shows ads.

### Which is updated more often, Prepper AI or Custos?

Prepper AI ships an update every 2 weeks, and Custos fortnightly. Most recently, Prepper AI was updated on October 24, 2026 and Custos on October 11, 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.*