# SoilDoc vs Optiflux

The clearest difference is update cadence: Optiflux at monthly against SoilDoc's every 8 months. SoilDoc's advantage is iOS requirement (13 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.

SoilDoc ships an update every 8 months, Optiflux monthly. The most recent releases landed on September 18, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | SoilDoc | Optiflux |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Monthly** |
| Size | 131 MB | 44 MB |
| Requires iOS | **13** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Forschungsinstitut fur biologischen Landbau FiBL](https://appshunter.io/developer/1386461790) | [Optiflux](https://appshunter.io/developer/1702873845) |

## What reviewers say

### SoilDoc

[App page](https://appshunter.io/ios/app/soildoc/id1454927145)

**Features:** macOS Compatibility

**In-app purchases:** none


### Optiflux

[App page](https://appshunter.io/ios/app/optiflux/id6462188397)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SoilDoc free?

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

### Is Optiflux free?

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

### Do SoilDoc or Optiflux have ads?

Neither SoilDoc nor Optiflux shows ads.

### Which is updated more often, SoilDoc or Optiflux?

SoilDoc ships an update every 8 months, and Optiflux monthly. Most recently, SoilDoc was updated on September 18, 2026 and Optiflux on October 9, 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.*