# 555 Calc vs OCCSensaBLE Classic

The clearest difference is ads: OCCSensaBLE Classic at none against 555 Calc's shown. OCCSensaBLE Classic also leads on iOS requirement (8.0 vs 11.0). On price, 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.

## The numbers

| Metric | 555 Calc | OCCSensaBLE Classic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (3 ratings)](https://appshunter.io/ios/app/555-calc/id868058244/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 20 months | — |
| Monetization | Ad-supported | — |
| Size | 18 MB | 56 MB |
| Requires iOS | 11.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jibiki Works](https://appshunter.io/developer/556845808) | [Simplyleds LLC](https://appshunter.io/developer/1451360263) |

## What reviewers say

### 555 Calc

[App page](https://appshunter.io/ios/app/555-calc/id868058244)

This utility app helps engineers and hobbyists calculate resistor values for circuits using the Timer IC 555. Simply input frequency, duty ratio, and capacitor values to get the required resistor outputs.

**Highlights:** Calculate resistor values, Input frequency, Input duty ratio, Input capacitor value, Timer IC 555 circuit design

**Features:** macOS Compatibility

**In-app purchases:** none


### OCCSensaBLE Classic

[App page](https://appshunter.io/ios/app/occsensable-classic/id6452048546)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 555 Calc free?

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

### Is OCCSensaBLE Classic free?

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

### Do 555 Calc or OCCSensaBLE Classic have ads?

555 Calc shows ads; OCCSensaBLE Classic does not.

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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.*