# DOPI vs Trevaron

The clearest difference is in-app purchases: DOPI at none against Trevaron's 3. DOPI also leads on iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Trevaron sells 3 in-app purchases, starting at $7.99 per month. DOPI asks for nothing beyond the download.

## The numbers

| Metric | DOPI | Trevaron |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 4 weeks |
| Size | 188 MB | 164 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [立雄 刘](https://appshunter.io/developer/1822479660) | [Guangzhou Zhonglipin Intelligent Technology Co., Ltd.](https://appshunter.io/developer/1891560214) |

## What reviewers say

### DOPI

[App page](https://appshunter.io/ios/app/dopi/id6748439130)

**In-app purchases:** none


### Trevaron

[App page](https://appshunter.io/ios/app/trevaron/id6763711626)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Membership subscription | $7.99 | per month |
| Premium Membership (Six Month) | $39.99 | per 6 months |
| Membership subscription | $69.99 | per year |


## Frequently asked questions

### Is DOPI free?

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

### Is Trevaron free?

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

### Do DOPI or Trevaron have ads?

Neither DOPI nor Trevaron shows ads.

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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.*