# d+f vs Preventa

The clearest difference is update cadence: d+f at weekly against Preventa's fortnightly. Preventa's advantage is iOS requirement (10.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

d+f ships an update weekly, Preventa fortnightly. The most recent releases landed on October 5, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | d+f | Preventa |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Size | 27 MB | 25 MB |
| Requires iOS | 15.6 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GISELA](https://appshunter.io/developer/1328336126) | [Galdon Software](https://appshunter.io/developer/1330936299) |

## What reviewers say

### d+f

[App page](https://appshunter.io/ios/app/d-plus-f/id1328336127)

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

**In-app purchases:** none


### Preventa

[App page](https://appshunter.io/ios/app/preventa/id1484977165)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is d+f free?

d+f is free to download, with no in-app purchases.

### Is Preventa free?

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

### Do d+f or Preventa have ads?

Neither d+f nor Preventa shows ads.

### Which is updated more often, d+f or Preventa?

d+f ships an update weekly, and Preventa fortnightly. Most recently, d+f was updated on October 5, 2026 and Preventa on October 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*