# SKD Test Prep vs STEMLearn

The clearest difference is update cadence: STEMLearn at every 2 months against SKD Test Prep's every 15 months. SKD Test Prep's advantage is iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SKD Test Prep ships an update every 15 months, STEMLearn every 2 months. The most recent releases landed on September 20, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | SKD Test Prep | STEMLearn |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 2 months** |
| Size | 209 MB | 99 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ginger Webs Pvt. Ltd.](https://appshunter.io/developer/808743814) | [Teevra Edutech Private Limited](https://appshunter.io/developer/1545914837) |

## What reviewers say

### SKD Test Prep

[App page](https://appshunter.io/ios/app/skd-test-prep/id1480423489)

**In-app purchases:** none


### STEMLearn

[App page](https://appshunter.io/ios/app/stemlearn/id6754865159)

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

**In-app purchases:** none


## Frequently asked questions

### Is SKD Test Prep free?

SKD Test Prep is free to download, with no in-app purchases.

### Is STEMLearn free?

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

### Do SKD Test Prep or STEMLearn have ads?

Neither SKD Test Prep nor STEMLearn shows ads.

### Which is updated more often, SKD Test Prep or STEMLearn?

SKD Test Prep ships an update every 15 months, and STEMLearn every 2 months. Most recently, SKD Test Prep was updated on September 20, 2026 and STEMLearn on October 10, 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.*