# ECHO Survival AI vs Post Apoc AI

The clearest difference is device support: Post Apoc AI at 3 against ECHO Survival AI's 1. Post Apoc AI also leads on iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. ECHO Survival AI sells 2 one-off in-app purchases and Post Apoc AI sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | ECHO Survival AI | Post Apoc AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Size | 97 MB | 494 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [ehsan azish](https://appshunter.io/developer/1622575303) | [Graphidea](https://appshunter.io/developer/1886132556) |

## What reviewers say

### ECHO Survival AI

[App page](https://appshunter.io/ios/app/echo-survival-ai/id6756616533)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock offline use forever | $12.99 | one-time |
| Full version | $12.99 | one-time |


### Post Apoc AI

[App page](https://appshunter.io/ios/app/post-apoc-ai/id6760765851)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime PRO | $4.99 | one-time |


## Frequently asked questions

### Is ECHO Survival AI free?

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

### Is Post Apoc AI free?

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

### Do ECHO Survival AI or Post Apoc AI have ads?

Neither ECHO Survival AI nor Post Apoc AI shows ads.

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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.*