# AstraTerra vs SLP Test Prep

The clearest difference is in-app purchases: AstraTerra at none against SLP Test Prep's 1. AstraTerra also leads on update cadence (every 10 days vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. SLP Test Prep sells 1 one-off in-app purchase. AstraTerra asks for nothing beyond the download.

AstraTerra ships an update every 10 days, SLP Test Prep every 3 months. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | AstraTerra | SLP Test Prep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 months |
| Size | 14 MB | 24 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [ASTRATERRA](https://appshunter.io/developer/1815702069) | [SLP Test Prep](https://appshunter.io/developer/1875366120) |

## What reviewers say

### AstraTerra

[App page](https://appshunter.io/ios/app/astraterra/id6746919643)

**Features:** macOS Compatibility

**In-app purchases:** none


### SLP Test Prep

[App page](https://appshunter.io/ios/app/slp-test-prep/id6758863917)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Access | $59.99 | one-time |


## Frequently asked questions

### Is AstraTerra free?

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

### Is SLP Test Prep free?

SLP Test Prep is free to download, with in-app purchases available.

### Do AstraTerra or SLP Test Prep have ads?

Neither AstraTerra nor SLP Test Prep shows ads.

### Which is updated more often, AstraTerra or SLP Test Prep?

AstraTerra ships an update every 10 days, and SLP Test Prep every 3 months. Most recently, AstraTerra was updated on November 8, 2026 and SLP Test Prep on November 5, 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.*