# isa.io vs Kronoplast

The clearest difference is update cadence: Kronoplast at every 3 weeks against isa.io's every 10 months. Kronoplast also leads on iOS requirement (13.0 vs 15.1). 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.

isa.io ships an update every 10 months, Kronoplast every 3 weeks. The most recent releases landed on October 25, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | isa.io | Kronoplast |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 weeks** |
| Size | 23 MB | 24 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DALOG® Diagnosesysteme GmbH](https://appshunter.io/developer/1701999607) | [Umang Kathiyara](https://appshunter.io/developer/1433901120) |

## What reviewers say

### isa.io

[App page](https://appshunter.io/ios/app/isaio/id6749070875)

**Features:** macOS Compatibility

**In-app purchases:** none


### Kronoplast

[App page](https://appshunter.io/ios/app/kronoplast/id6756867396)

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

**In-app purchases:** none


## Frequently asked questions

### Is isa.io free?

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

### Is Kronoplast free?

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

### Do isa.io or Kronoplast have ads?

Neither isa.io nor Kronoplast shows ads.

### Which is updated more often, isa.io or Kronoplast?

isa.io ships an update every 10 months, and Kronoplast every 3 weeks. Most recently, isa.io was updated on October 25, 2026 and Kronoplast on October 10, 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.*