# BTT vs United Ceres

The clearest difference is in-app purchases: United Ceres at none against BTT's 1. United Ceres also leads on ads (none vs shown) and update cadence (weekly vs every 2 months). On price and device support there is nothing between them.

Both are free to download. BTT sells 1 one-off in-app purchase. United Ceres asks for nothing beyond the download.

BTT ships an update every 2 months, United Ceres weekly. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | BTT | United Ceres |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Weekly** |
| Size | 69 MB | 56 MB |
| Requires iOS | 16.4 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [VINZCORP SOLUTIONS PTE. LTD.](https://appshunter.io/developer/1480938118) | [United Ceres College Pte Ltd](https://appshunter.io/developer/1890411534) |

## What reviewers say

### BTT

[App page](https://appshunter.io/ios/app/btt-basic-theory-test-sg/id6758176753)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $2.99 | one-time |


### United Ceres

[App page](https://appshunter.io/ios/app/united-ceres/id6761606105)

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

**In-app purchases:** none


## Frequently asked questions

### Is BTT free?

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

### Is United Ceres free?

United Ceres is free to download, with no in-app purchases.

### Do BTT or United Ceres have ads?

BTT shows ads; United Ceres does not.

### Which is updated more often, BTT or United Ceres?

BTT ships an update every 2 months, and United Ceres weekly. Most recently, BTT was updated on October 6, 2026 and United Ceres on October 7, 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.*