# Basic Theory Test Singapore vs SSDC Horizon

The clearest difference is in-app purchases: SSDC Horizon at none against Basic Theory Test Singapore's 3. SSDC Horizon also leads on ads (none vs shown) and update cadence (every 10 days vs every 2 months). Basic Theory Test Singapore's advantage is iOS requirement (13.4 vs 15.0). On price and device support there is nothing between them.

Both are free to download. Basic Theory Test Singapore sells 3 in-app purchases, starting at $19.99 per 7 days. SSDC Horizon asks for nothing beyond the download.

Basic Theory Test Singapore ships an update every 2 months, SSDC Horizon every 10 days. The most recent releases landed on October 25, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Basic Theory Test Singapore | SSDC Horizon |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 10 days** |
| Size | 33 MB | 70 MB |
| Requires iOS | **13.4** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [HSN Software Technologies private LIMITED](https://appshunter.io/developer/1557446234) | [Shreyash Jain](https://appshunter.io/developer/1795189056) |

## What reviewers say

### Basic Theory Test Singapore

[App page](https://appshunter.io/ios/app/basic-theory-test-singapore/id6742833208)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $19.99 | per 7 days |
| PRO Monthly | $39.99 | per month |
| pro-90Days | $59.99 | per 3 months |


### SSDC Horizon

[App page](https://appshunter.io/ios/app/ssdc-horizon/id6743466266)

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

**In-app purchases:** none


## Frequently asked questions

### Is Basic Theory Test Singapore free?

Basic Theory Test Singapore is free to download, with in-app purchases available.

### Is SSDC Horizon free?

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

### Do Basic Theory Test Singapore or SSDC Horizon have ads?

Basic Theory Test Singapore shows ads; SSDC Horizon does not.

### Which is updated more often, Basic Theory Test Singapore or SSDC Horizon?

Basic Theory Test Singapore ships an update every 2 months, and SSDC Horizon every 10 days. Most recently, Basic Theory Test Singapore was updated on October 25, 2026 and SSDC Horizon on October 30, 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.*