# Sunja vs 趣答通识

The clearest difference is in-app purchases: 趣答通识 at none against Sunja's 2. 趣答通识 also leads on ads (none vs shown) and update cadence (every 3 days vs every 5 months). On price and device support there is nothing between them.

Both are free to download. Sunja sells 2 in-app purchases, starting at $29.99 per month. 趣答通识 asks for nothing beyond the download.

Sunja ships an update every 5 months, 趣答通识 every 3 days. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Sunja | 趣答通识 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 3 days** |
| Size | 70 MB | 19 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Sunja Labs Private Limited](https://appshunter.io/developer/1774734869) | [双生 聂](https://appshunter.io/developer/6806304810) |

## What reviewers say

### Sunja

[App page](https://appshunter.io/ios/app/sunja-interactive-3d-science/id6760365462)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Learning | $29.99 | per month |
| Annual Learning | $199.99 | per year |


### 趣答通识

[App page](https://appshunter.io/ios/app/id6806454433)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sunja free?

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

### Is 趣答通识 free?

趣答通识 is free to download, with no in-app purchases.

### Do Sunja or 趣答通识 have ads?

Sunja shows ads; 趣答通识 does not.

### Which is updated more often, Sunja or 趣答通识?

Sunja ships an update every 5 months, and 趣答通识 every 3 days. Most recently, Sunja was updated on October 24, 2026 and 趣答通识 on October 29, 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.*