# Workshop for Raspberry Pi Pico vs 555 Timer & Oscillators Guide

The clearest difference is in-app purchases: 555 Timer & Oscillators Guide at none against Workshop for Raspberry Pi Pico's 11. 555 Timer & Oscillators Guide also leads on update cadence (every 5 months vs every 19 months). Workshop for Raspberry Pi Pico's advantage is ads (none vs shown) and iOS requirement (13.0 vs 16.0). On price and device support there is nothing between them.

Both are free to download. Workshop for Raspberry Pi Pico sells 11 one-off in-app purchases. 555 Timer & Oscillators Guide asks for nothing beyond the download.

Workshop for Raspberry Pi Pico ships an update every 19 months, 555 Timer & Oscillators Guide every 5 months. The most recent releases landed on September 26, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Workshop for Raspberry Pi Pico | 555 Timer & Oscillators Guide |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 19 months | **Every 5 months** |
| Monetization | Free | — |
| Size | 40 MB | 24 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### Workshop for Raspberry Pi Pico

[App page](https://appshunter.io/ios/app/workshop-for-raspberry-pi-pico/id1642855254)

Explore a variety of demo projects for Raspberry Pi Pico, covering displays, sensors, automation, memory, IoT, audio, and more. Ideal for makers, electronics enthusiasts, and engineering students.

**Highlights:** Display projects (LCM, OLED, TFT), Sensor projects (temperature, pressure, motion), Home automation (Wi-Fi, Bluetooth, LoRa), Memory projects (EEPROM, SRAM), IoT projects (SMS, ThingSpeak), Audio projects (piano, music player)

**Features:** Vision Pro support

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Home automation using LoRa | $1.99 | one-time |
| Home automation using 24L01 | $1.99 | one-time |
| Milli-ohm meter | $1.99 | one-time |
| FM5767 radio | $1.99 | one-time |
| GPS module | $1.99 | one-time |
| SAA1099 music player | $1.99 | one-time |
| LoRa weather station | $1.99 | one-time |
| Rotary encoder | $1.99 | one-time |
| Home automation (bluetoothLE) | $3.99 | one-time |
| Bluetooth multimeter | $3.99 | one-time |
| Bluetooth WS2812 led strip | $3.99 | one-time |


### 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 Workshop for Raspberry Pi Pico free?

Workshop for Raspberry Pi Pico is free to download, with in-app purchases available.

### Is 555 Timer & Oscillators Guide free?

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

### Do Workshop for Raspberry Pi Pico or 555 Timer & Oscillators Guide have ads?

555 Timer & Oscillators Guide shows ads; Workshop for Raspberry Pi Pico does not.

### Which is updated more often, Workshop for Raspberry Pi Pico or 555 Timer & Oscillators Guide?

Workshop for Raspberry Pi Pico ships an update every 19 months, and 555 Timer & Oscillators Guide every 5 months. Most recently, Workshop for Raspberry Pi Pico was updated on September 26, 2026 and 555 Timer & Oscillators Guide on October 2, 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.*