# AOSB vs Army Officer Selection Prep

The clearest difference is in-app purchases: AOSB at none against Army Officer Selection Prep's 3. AOSB also leads on update cadence (every 2 weeks vs every 2 months) and iOS requirement (15.6 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Army Officer Selection Prep sells 3 in-app purchases, starting at $6.99 per month. AOSB asks for nothing beyond the download.

AOSB ships an update every 2 weeks, Army Officer Selection Prep every 2 months. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | AOSB | Army Officer Selection Prep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Size | 12 MB | 6 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [George Lee](https://appshunter.io/developer/1295254226) | [MD Shahariar Nazim Joy](https://appshunter.io/developer/1893961943) |

## What reviewers say

### AOSB

[App page](https://appshunter.io/ios/app/aosb/id6762511460)

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

**In-app purchases:** none


### Army Officer Selection Prep

[App page](https://appshunter.io/ios/app/army-officer-selection-prep/id6793860549)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $6.99 | per month |
| Yearly Premium | $19.99 | per year |
| Lifetime Access | $29.99 | one-time |


## Frequently asked questions

### Is AOSB free?

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

### Is Army Officer Selection Prep free?

Army Officer Selection Prep is free to download, with in-app purchases available.

### Do AOSB or Army Officer Selection Prep have ads?

Neither AOSB nor Army Officer Selection Prep shows ads.

### Which is updated more often, AOSB or Army Officer Selection Prep?

AOSB ships an update every 2 weeks, and Army Officer Selection Prep every 2 months. Most recently, AOSB was updated on November 5, 2026 and Army Officer Selection Prep on October 31, 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.*