# Optris calculator vs DVS Events

The clearest difference is update cadence: DVS Events at every 3 weeks against Optris calculator'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.

Optris calculator ships an update every 2 months, DVS Events every 3 weeks. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Optris calculator | DVS Events |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 31 MB | 20 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Optris GmbH](https://appshunter.io/developer/1619077973) | [DVS Media GmbH](https://appshunter.io/developer/1222521688) |

## What reviewers say

### Optris calculator

[App page](https://appshunter.io/ios/app/optris-calculator/id1619077971)

**In-app purchases:** none


### DVS Events

[App page](https://appshunter.io/ios/app/dvs-events/id6756307018)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Optris calculator free?

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

### Is DVS Events free?

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

### Do Optris calculator or DVS Events have ads?

Neither Optris calculator nor DVS Events shows ads.

### Which is updated more often, Optris calculator or DVS Events?

Optris calculator ships an update every 2 months, and DVS Events every 3 weeks. Most recently, Optris calculator was updated on October 27, 2026 and DVS Events on October 28, 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.*