# 555 Calc vs Electro Port

The clearest difference is rating: Electro Port at 5.0 against 555 Calc's 4.0. Electro Port also leads on ads (none vs shown) and monetization model (free vs ad-supported). 555 Calc's advantage is ratings volume (3 vs 1) and iOS requirement (11.0 vs 13.0). 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.

Electro Port holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

## The numbers

| Metric | 555 Calc | Electro Port |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (3 ratings)](https://appshunter.io/ios/app/555-calc/id868058244/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/electro-port/id6444053417/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 20 months | — |
| Monetization | Ad-supported | **Free** |
| Size | 18 MB | 41 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jibiki Works](https://appshunter.io/developer/556845808) | [UTSOURCE HOLDING COMPANY LIMITED](https://appshunter.io/developer/1076084259) |

## 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, Vision Pro support

**In-app purchases:** none


### Electro Port

[App page](https://appshunter.io/ios/app/electro-port/id6444053417)

A free utility app for electronics hobbyists offering a suite of tools for calculations and data analysis. It simplifies complex electronic tasks with practical calculators and data sets.

**Highlights:** Color ring resistance calculator, Battery charging time calculation, Battery lifetime calculation, Coil inductance calculation, Capacitor color code calculation, LED circuit power consumption calculation

**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 Electro Port free?

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

### Which has better reviews, 555 Calc or Electro Port?

Electro Port is rated higher. 555 Calc averages 4.0 out of 5 from 3 ratings, while Electro Port averages 5.0 from 1 ratings.

### Do 555 Calc or Electro Port have ads?

555 Calc shows ads; Electro Port 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.*