# Koios Mobile vs Fieldworker

The clearest difference is update cadence: Koios Mobile at every 9 days against Fieldworker's every 2 months. 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.

Koios Mobile ships an update every 9 days, Fieldworker every 2 months. The most recent releases landed on September 9, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Koios Mobile | Fieldworker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 2 months |
| Size | 4 MB | 236 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Slawomir Piela](https://appshunter.io/developer/1475090274) | [Fieldworker sp. z o.o.](https://appshunter.io/developer/1791382598) |

## What reviewers say

### Koios Mobile

[App page](https://appshunter.io/ios/app/koios-mobile/id1455092428)

**Features:** macOS Compatibility

**In-app purchases:** none


### Fieldworker

[App page](https://appshunter.io/ios/app/fieldworker/id6740742444)

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

**In-app purchases:** none


## Frequently asked questions

### Is Koios Mobile free?

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

### Is Fieldworker free?

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

### Do Koios Mobile or Fieldworker have ads?

Neither Koios Mobile nor Fieldworker shows ads.

### Which is updated more often, Koios Mobile or Fieldworker?

Koios Mobile ships an update every 9 days, and Fieldworker every 2 months. Most recently, Koios Mobile was updated on September 9, 2026 and Fieldworker on September 15, 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.*