# WePass Basic Theory Test (BTT) vs Memory Explorer

The clearest difference is in-app purchases: Memory Explorer at none against WePass Basic Theory Test (BTT)'s 1. WePass Basic Theory Test (BTT)'s advantage is iOS requirement (12.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. WePass Basic Theory Test (BTT) sells 1 one-off in-app purchase. Memory Explorer asks for nothing beyond the download.

WePass Basic Theory Test (BTT) ships an update fortnightly, Memory Explorer every 9 days. The most recent releases landed on July 24, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | WePass Basic Theory Test (BTT) | Memory Explorer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/wepass-basic-theory-test-btt/id1673212996/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Size | 100 MB | 41 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [GEEWAX TECHNOLOGY PTE LTD](https://appshunter.io/developer/1673212998) | [TinkerTanks](https://appshunter.io/developer/1580354122) |

## What reviewers say

### WePass Basic Theory Test (BTT)

[App page](https://appshunter.io/ios/app/wepass-basic-theory-test-btt/id1673212996)

Prepare for the Singapore Basic Theory Test with a comprehensive question bank and helpful tips. Track your progress with detailed statistics and focus on areas needing the most practice. This ad-free app aims to help you pass on your first attempt.

**Highlights:** 600+ practice questions, Questions with images, signs, and diagrams, Tutorial mode with tips, Detailed progress statistics, Automatic question ranking, Ad-free experience

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WePass Premium | $8.99 | one-time |


### Memory Explorer

[App page](https://appshunter.io/ios/app/memory-explorer/id6798429528)

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

**In-app purchases:** none


## Frequently asked questions

### Is WePass Basic Theory Test (BTT) free?

WePass Basic Theory Test (BTT) is free to download, with in-app purchases available.

### Is Memory Explorer free?

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

### Do WePass Basic Theory Test (BTT) or Memory Explorer have ads?

Neither WePass Basic Theory Test (BTT) nor Memory Explorer shows ads.

### Which is updated more often, WePass Basic Theory Test (BTT) or Memory Explorer?

WePass Basic Theory Test (BTT) ships an update fortnightly, and Memory Explorer every 9 days. Most recently, WePass Basic Theory Test (BTT) was updated on July 24, 2026 and Memory Explorer on September 16, 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.*