# Sundori vs BTT

The clearest difference is in-app purchases: Sundori at none against BTT's 1. Sundori also leads on ads (none vs shown) and iOS requirement (13.0 vs 16.4). On price and device support there is nothing between them.

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

## The numbers

| Metric | Sundori | BTT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 2 months |
| Size | 42 MB | 69 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nuqi Software Limited](https://appshunter.io/developer/1832325179) | [VINZCORP SOLUTIONS PTE. LTD.](https://appshunter.io/developer/1480938118) |

## What reviewers say

### Sundori

[App page](https://appshunter.io/ios/app/sundori/id6756233242)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Sundori free?

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

### Is BTT free?

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

### Do Sundori or BTT have ads?

BTT shows ads; Sundori does not.

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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.*