# Viserto vs SFK

Viserto and SFK are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Viserto ships an update every 5 months, SFK every 4 months. The most recent releases landed on September 12, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Viserto | SFK |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 months** |
| Size | 10 MB | 50 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Russo](https://appshunter.io/developer/1332740319) | [Barnabas Buecher](https://appshunter.io/developer/1207945658) |

## What reviewers say

### Viserto

[App page](https://appshunter.io/ios/app/viserto/id1129788816)

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

**In-app purchases:** none


### SFK

[App page](https://appshunter.io/ios/app/sfk/id1207945659)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Viserto free?

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

### Is SFK free?

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

### Do Viserto or SFK have ads?

Neither Viserto nor SFK shows ads.

### Which is updated more often, Viserto or SFK?

Viserto ships an update every 5 months, and SFK every 4 months. Most recently, Viserto was updated on September 12, 2026 and SFK on September 16, 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.*