# Previa Go vs OnFest

The clearest difference is ads: OnFest at none against Previa Go's shown. Previa Go's advantage is iOS requirement (13.0 vs 15.1). On price, update cadence, 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.

Previa Go ships an update fortnightly, OnFest every 8 days. The most recent releases landed on October 9, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Previa Go | OnFest |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 8 days** |
| Size | 25 MB | 48 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [MANUEL VALLECILLOS ESCOBOSA](https://appshunter.io/developer/1667272242) | [Antonio Hernandez](https://appshunter.io/developer/1896707281) |

## What reviewers say

### Previa Go

[App page](https://appshunter.io/ios/app/previa-go/id6450957642)

**Features:** macOS Compatibility

**In-app purchases:** none


### OnFest

[App page](https://appshunter.io/ios/app/onfest/id6770002455)

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

**In-app purchases:** none


## Frequently asked questions

### Is Previa Go free?

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

### Is OnFest free?

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

### Do Previa Go or OnFest have ads?

Previa Go shows ads; OnFest does not.

### Which is updated more often, Previa Go or OnFest?

Previa Go ships an update fortnightly, and OnFest every 8 days. Most recently, Previa Go was updated on October 9, 2026 and OnFest on October 22, 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.*