# Test Prep for GRE Psychology vs Statistics AI

The clearest difference is update cadence: Statistics AI at every 10 days against Test Prep for GRE Psychology's every 8 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Test Prep for GRE Psychology sells 9 in-app purchases, starting at $8.99 per 7 days and Statistics AI sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Test Prep for GRE Psychology ships an update every 8 months, Statistics AI every 10 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Test Prep for GRE Psychology | Statistics AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/test-prep-for-gre-psychology/id6479675386/reviews)** | — |
| Number of ratings | **6** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 10 days** |
| Monetization | Free with in-app purchases | — |
| Size | 56 MB | 58 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [YAUHEN BAHDANOVICH](https://appshunter.io/developer/1711932790) | [Tat Wah Chan](https://appshunter.io/developer/1832432621) |

## What reviewers say

### Test Prep for GRE Psychology

[App page](https://appshunter.io/ios/app/test-prep-for-gre-psychology/id6479675386)

Prepare for the GRE Psychology Subject Test with over 1000 practice questions, realistic simulations, and detailed explanations. Tailor your study with focused plans and track your progress to master key concepts and achieve your target score.

**Highlights:** 1000+ practice questions, Realistic exam simulations, Detailed answer explanations, Personalized study plans, Progress tracking analytics, Peer comparison feature, Interactive learning tools

**Features:** Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GRE Psychology Weekly Access | $8.99 | per 7 days |
| GRE Psychology Monthly Access | $24.99 | per month |
| GRE Psychology Monthly Access | $24.99 | per month |
| GRE Quarterly Full Access | $59.99 | per 3 months |
| GRE Quarterly Full Access | $59.99 | per 3 months |
| GRE Semiannual Full Access | $75.99 | per 6 months |
| GRE Semiannual Full Access | $79.99 | per 6 months |
| GRE Annual Full Access | $109.99 | per year |
| GRE Annual Full Access | $119.99 | per year |


### Statistics AI

[App page](https://appshunter.io/ios/app/statistics-ai-stats-solver/id6790732964)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Statistics AI - Smart Solver Weekly | $4.99 | per 7 days |
| Statistics AI - Smart Solver Yearly | $29.99 | per year |


## Frequently asked questions

### Is Test Prep for GRE Psychology free?

Test Prep for GRE Psychology is free to download, with in-app purchases available.

### Is Statistics AI free?

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

### Do Test Prep for GRE Psychology or Statistics AI have ads?

Neither Test Prep for GRE Psychology nor Statistics AI shows ads.

### Which is updated more often, Test Prep for GRE Psychology or Statistics AI?

Test Prep for GRE Psychology ships an update every 8 months, and Statistics AI every 10 days. Most recently, Test Prep for GRE Psychology was updated on October 24, 2026 and Statistics AI on October 24, 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.*