# The ABA Lab vs EPPP Study by thePsychology.ai

The clearest difference is iOS requirement: The ABA Lab at 15.1 against EPPP Study by thePsychology.ai's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. The ABA Lab sells 3 in-app purchases, starting at $9.99 per month and EPPP Study by thePsychology.ai sells 3 in-app purchases, starting at $69.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | The ABA Lab | EPPP Study by thePsychology.ai |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/eppp-study-by-thepsychologyai/id6788765534/reviews)** |
| Number of ratings | — | **4** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 days | Every 2 days |
| Monetization | — | Free with in-app purchases |
| Size | 41 MB | 24 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 17+ |
| Developer | [WAMVYTECH GROUP LLC](https://appshunter.io/developer/1887877334) | [ANDERS HO-YIN CHAN](https://appshunter.io/developer/6788765938) |

## What reviewers say

### The ABA Lab

[App page](https://appshunter.io/ios/app/the-aba-lab/id6761122498)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $9.99 | per month |
| Quarterly | $19.99 | per 3 months |
| Yearly | $49.99 | per year |


### EPPP Study by thePsychology.ai

[App page](https://appshunter.io/ios/app/eppp-study-by-thepsychologyai/id6788765534)

Prepare for the EPPP exam with a tool designed by a licensed psychologist. It identifies your knowledge gaps, offers practice exams, and provides detailed explanations and AI-powered tutoring. Includes study lessons, audio, and a space to manage test anxiety.

**Highlights:** Full EPPP simulations, Study Mode with answer explanations, AI tutor for question clarification, Domain-by-domain results breakdown, Readable lessons with audio, Test anxiety management space, Website synchronization

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $69.99 | per month |
| Yearly | $349.99 | per year |
| Offline Access | $4.99 | one-time |


## Frequently asked questions

### Is The ABA Lab free?

The ABA Lab is free to download, with in-app purchases available.

### Is EPPP Study by thePsychology.ai free?

EPPP Study by thePsychology.ai is free to download, with in-app purchases available.

### Do The ABA Lab or EPPP Study by thePsychology.ai have ads?

Neither The ABA Lab nor EPPP Study by thePsychology.ai shows ads.

### Which is updated more often, The ABA Lab or EPPP Study by thePsychology.ai?

The ABA Lab ships an update every 2 days, and EPPP Study by thePsychology.ai every 2 days. Most recently, The ABA Lab was updated on October 31, 2026 and EPPP Study by thePsychology.ai 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.*