# 555 Timer & Oscillators Guide vs Pico Projects

The clearest difference is ads: Pico Projects at none against 555 Timer & Oscillators Guide's shown. On price, in-app purchases, device support and iOS requirement 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 Timer & Oscillators Guide | Pico Projects |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | — |
| Size | 24 MB | 37 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | +4 | 4+ |
| Developer | [ALG Software Lab](https://appshunter.io/developer/1650561236) | [Zaw Win Myat](https://appshunter.io/developer/1800881321) |

## What reviewers say

### 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


### Pico Projects

[App page](https://appshunter.io/ios/app/pico-projects/id6743405347)

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

**In-app purchases:** none


## Frequently asked questions

### Is 555 Timer & Oscillators Guide free?

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

### Is Pico Projects free?

Pico Projects is free to download, with no in-app purchases.

### Do 555 Timer & Oscillators Guide or Pico Projects have ads?

555 Timer & Oscillators Guide shows ads; Pico Projects 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.*