# Optiswiss App vs Sensitivity Tests

The clearest difference is update cadence: Sensitivity Tests at every 5 weeks against Optiswiss App's every 3 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.

Optiswiss App ships an update every 3 months, Sensitivity Tests every 5 weeks. The most recent releases landed on September 20, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Optiswiss App | Sensitivity Tests |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Size | 711 MB | 105 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Suxesiv GmbH](https://appshunter.io/developer/531604457) | [Nikon Optical USA](https://appshunter.io/developer/566202027) |

## What reviewers say

### Optiswiss App

[App page](https://appshunter.io/ios/app/optiswiss-app/id909256164)

**In-app purchases:** none


### Sensitivity Tests

[App page](https://appshunter.io/ios/app/sensitivity-tests/id1338466692)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Optiswiss App free?

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

### Is Sensitivity Tests free?

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

### Do Optiswiss App or Sensitivity Tests have ads?

Neither Optiswiss App nor Sensitivity Tests shows ads.

### Which is updated more often, Optiswiss App or Sensitivity Tests?

Optiswiss App ships an update every 3 months, and Sensitivity Tests every 5 weeks. Most recently, Optiswiss App was updated on September 20, 2026 and Sensitivity Tests on September 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*