# Autonomy vs Underground Prepper

The clearest difference is in-app purchases: Autonomy at none against Underground Prepper's 3. Underground Prepper's advantage is update cadence (every 2 days vs every 5 days) and device support (4 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Underground Prepper sells 3 in-app purchases, starting at $9.99 per month. Autonomy asks for nothing beyond the download.

Autonomy ships an update every 5 days, Underground Prepper every 2 days. The most recent releases landed on October 3, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Autonomy | Underground Prepper |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/underground-prepper/id6768668180/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 44 MB | 93 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Autonomy Next, Inc.](https://appshunter.io/developer/1807931321) | [5th Studios, LLC](https://appshunter.io/developer/1896594590) |

## What reviewers say

### Autonomy

[App page](https://appshunter.io/ios/app/autonomy-nx/id6756606403)

**In-app purchases:** none


### Underground Prepper

[App page](https://appshunter.io/ios/app/underground-prepper/id6768668180)

This app helps you meticulously track your family's emergency supplies and preparedness levels. It organizes inventory, manages household member needs, and provides readiness tiers for various disaster scenarios. All data is stored locally for offline access and privacy.

**Highlights:** Family emergency preparedness tracking, Detailed inventory management, Household member profiles, Bugout bag planning, Offline functionality, Exportable reports, Preparedness checklists

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $9.99 | per month |
| Yearly Subscription | $109.99 | per year |
| Lifetime Membership | $349.99 | one-time |


## Frequently asked questions

### Is Autonomy free?

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

### Is Underground Prepper free?

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

### Do Autonomy or Underground Prepper have ads?

Neither Autonomy nor Underground Prepper shows ads.

### Which is updated more often, Autonomy or Underground Prepper?

Autonomy ships an update every 5 days, and Underground Prepper every 2 days. Most recently, Autonomy was updated on October 3, 2026 and Underground Prepper on September 25, 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.*