# AMMO Rack vs Study AI

The clearest difference is update cadence: Study AI at every 5 weeks against AMMO Rack's every 9 months. AMMO Rack's advantage is iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. AMMO Rack sells 3 in-app purchases, starting at $0.99 per month and Study AI sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

AMMO Rack ships an update every 9 months, Study AI every 5 weeks. The most recent releases landed on September 17, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | AMMO Rack | Study AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ammo-rack/id454998630/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 5 weeks** |
| Monetization | Freemium | — |
| Size | 204 MB | 49 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 12+ |
| Developer | [Amphetamobile](https://appshunter.io/developer/319258890) | [Study AI Studios LLC](https://appshunter.io/developer/1828289858) |

## What reviewers say

### AMMO Rack

[App page](https://appshunter.io/ios/app/ammo-rack/id454998630)

Organize and manage various file types, including PDFs and images, in customizable containers. View, annotate, and share your documents and media on the go. Upgrade for unlimited storage and advanced features.

**Highlights:** Multi-media and document management, Organize files in custom containers, Full-screen document viewer, PDF annotation tools, File sharing and renaming, Searchable filenames with color-coded file types

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly Subscription | $0.99 | per month |
| Pro Yearly Subscription | $9.99 | per year |
| Rack Pro Upgrade | $4.99 | one-time |


### Study AI

[App page](https://appshunter.io/ios/app/study-ai-exam-prep/id6748967841)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Study AI Monthly Subscription | $9.99 | per month |
| Study AI Yearly Subscription | $35.99 | per year |
| Study AI Yearly Subscription | $35.99 | per year |


## Frequently asked questions

### Is AMMO Rack free?

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

### Is Study AI free?

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

### Do AMMO Rack or Study AI have ads?

Neither AMMO Rack nor Study AI shows ads.

### Which is updated more often, AMMO Rack or Study AI?

AMMO Rack ships an update every 9 months, and Study AI every 5 weeks. Most recently, AMMO Rack was updated on September 17, 2026 and Study AI on September 21, 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.*