# Optris calculator vs SmartCell Guide

The clearest difference is iOS requirement: Optris calculator at 12.0 against SmartCell Guide's 15.0. On price, update cadence, ads and in-app purchases 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, SmartCell Guide monthly. The most recent releases landed on December 3, 2025 and May 19, 2026 respectively.

## The numbers

| Metric | Optris calculator | SmartCell Guide |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 31 MB | 489 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Optris GmbH](https://appshunter.io/developer/1619077973) | [Electronic Modular Services Ltd](https://appshunter.io/developer/476836138) |

## What reviewers say

### Optris calculator

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

**In-app purchases:** none


### SmartCell Guide

[App page](https://appshunter.io/ios/app/smartcell-guide/id6471679545)

**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 SmartCell Guide free?

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

### Do Optris calculator or SmartCell Guide have ads?

Neither Optris calculator nor SmartCell Guide shows ads.

### Which is updated more often, Optris calculator or SmartCell Guide?

Optris calculator ships an update every 2 months, and SmartCell Guide monthly. Most recently, Optris calculator was updated on December 3, 2025 and SmartCell Guide on May 19, 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.*