# Basic Theory Test (BTT SG) vs CEI Instructor Exam Prep

The clearest difference is in-app purchases: CEI Instructor Exam Prep at none against Basic Theory Test (BTT SG)'s 3. CEI Instructor Exam Prep also leads on update cadence (every 4 months vs every 55 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Basic Theory Test (BTT SG) sells 3 one-off in-app purchases. CEI Instructor Exam Prep asks for nothing beyond the download.

Basic Theory Test (BTT SG) ships an update every 55 months, CEI Instructor Exam Prep every 4 months. The most recent releases landed on November 10, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | Basic Theory Test (BTT SG) | CEI Instructor Exam Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.8 (5 ratings)](https://appshunter.io/ios/app/basic-theory-test-btt-sg/id530942747/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 55 months | **Every 4 months** |
| Monetization | Free with in-app purchases | — |
| Size | 17 MB | 27 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lee Sing Jie](https://appshunter.io/developer/519725032) | [Davy Raitt](https://appshunter.io/developer/1795318281) |

## What reviewers say

### Basic Theory Test (BTT SG)

[App page](https://appshunter.io/ios/app/basic-theory-test-btt-sg/id530942747)

Prepare for your Singaporean theory test with interactive questions, signs, and road markings. Practice and simulate tests offline to master the material and pass your exam.

**Highlights:** Interactive questions, signs, and road markings, Learn mode for familiarization, Practice mode with explanations and categories, Simulated test mode with time limits, Progress tracking and results compilation, Offline functionality, Bookmark difficult questions

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Practice Package | $0.99 | one-time |
| Learn Package | $0.99 | one-time |
| Full Package | $1.99 | one-time |


### CEI Instructor Exam Prep

[App page](https://appshunter.io/ios/app/cei-instructor-exam-prep/id6758679058)

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

**In-app purchases:** none


## Frequently asked questions

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

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

### Is CEI Instructor Exam Prep free?

CEI Instructor Exam Prep is free to download, with no in-app purchases.

### Do Basic Theory Test (BTT SG) or CEI Instructor Exam Prep have ads?

Neither Basic Theory Test (BTT SG) nor CEI Instructor Exam Prep shows ads.

### Which is updated more often, Basic Theory Test (BTT SG) or CEI Instructor Exam Prep?

Basic Theory Test (BTT SG) ships an update every 55 months, and CEI Instructor Exam Prep every 4 months. Most recently, Basic Theory Test (BTT SG) was updated on November 10, 2026 and CEI Instructor Exam Prep on November 13, 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.*