# Sayerlack vs Krona RA

The clearest difference is update cadence: Krona RA at every 3 weeks against Sayerlack's every 2 months. Krona RA also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

Sayerlack ships an update every 2 months, Krona RA every 3 weeks. The most recent releases landed on December 12, 2025 and October 8, 2026 respectively.

## The numbers

| Metric | Sayerlack | Krona RA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 35 MB | 219 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SZ SOLUCOES EM INFORMATICA LTDA](https://appshunter.io/developer/1818886649) | [Signia Studios](https://appshunter.io/developer/1289856621) |

## What reviewers say

### Sayerlack

[App page](https://appshunter.io/ios/app/sayerlack/id715507697)

**Features:** macOS Compatibility

**In-app purchases:** none


### Krona RA

[App page](https://appshunter.io/ios/app/krona-ra/id1452670421)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sayerlack free?

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

### Is Krona RA free?

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

### Do Sayerlack or Krona RA have ads?

Neither Sayerlack nor Krona RA shows ads.

### Which is updated more often, Sayerlack or Krona RA?

Sayerlack ships an update every 2 months, and Krona RA every 3 weeks. Most recently, Sayerlack was updated on December 12, 2025 and Krona RA on October 8, 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.*