# SYNC vs 探盒：PingBox

The clearest difference is in-app purchases: 探盒：PingBox at none against SYNC's 2. SYNC's advantage is ads (none vs shown) and iOS requirement (15.0 vs 17.0). On price and device support there is nothing between them.

Both are free to download. SYNC sells 2 in-app purchases, starting at $5.00 per month. 探盒：PingBox asks for nothing beyond the download.

## The numbers

| Metric | SYNC | 探盒：PingBox |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | — | Every 5 days |
| Size | 64 MB | 4 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [Mustafa Salim Erek](https://appshunter.io/developer/1896175573) | [阳志 陈](https://appshunter.io/developer/6794155446) |

## What reviewers say

### SYNC

[App page](https://appshunter.io/ios/app/sync-the-daily-question/id6799400522)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SYNC Premium Monthly | $5.00 | per month |
| SYNC Premium Yearly | $40.00 | per year |


### 探盒：PingBox

[App page](https://appshunter.io/ios/app/pingbox/id6805423067)

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

**In-app purchases:** none


## Frequently asked questions

### Is SYNC free?

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

### Is 探盒：PingBox free?

探盒：PingBox is free to download, with no in-app purchases.

### Do SYNC or 探盒：PingBox have ads?

探盒：PingBox shows ads; SYNC 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.*