# Electronics and Communication Engineering vs 555 Timer & Oscillators Guide

The clearest difference is ads: Electronics and Communication Engineering at none against 555 Timer & Oscillators Guide's shown. Electronics and Communication Engineering also leads on iOS requirement (8.0 vs 16.0). 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 | Electronics and Communication Engineering | 555 Timer & Oscillators Guide |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | — | Every 5 months |
| Size | 10 MB | 24 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HARIKRISHNA VALLAKATLA](https://appshunter.io/developer/1024902607) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### Electronics and Communication Engineering

[App page](https://appshunter.io/ios/app/electronics-and-communication-engineering/id1232520135)

**Features:** macOS Compatibility

**In-app purchases:** none


### 555 Timer & Oscillators Guide

[App page](https://appshunter.io/ios/app/555-timer-and-oscillators-guide/id6504487994)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Electronics and Communication Engineering free?

Electronics and Communication Engineering is free to download, with no in-app purchases.

### Is 555 Timer & Oscillators Guide free?

555 Timer & Oscillators Guide is free to download, with no in-app purchases.

### Do Electronics and Communication Engineering or 555 Timer & Oscillators Guide have ads?

555 Timer & Oscillators Guide shows ads; Electronics and Communication Engineering 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.*