# 555 Timer & Oscillators Guide vs CircuitWay

The clearest difference is in-app purchases: 555 Timer & Oscillators Guide at none against CircuitWay's 3. CircuitWay's advantage is ads (none vs shown) and update cadence (monthly vs every 5 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. CircuitWay sells 3 in-app purchases, starting at $2.99 per month. 555 Timer & Oscillators Guide asks for nothing beyond the download.

555 Timer & Oscillators Guide ships an update every 5 months, CircuitWay monthly. The most recent releases landed on October 19, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 555 Timer & Oscillators Guide | CircuitWay |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (3 ratings)](https://appshunter.io/ios/app/circuitway-circuit-simulator/id6751744974/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 24 MB | 392 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ALG Software Lab](https://appshunter.io/developer/1650561236) | [栋侠 郑](https://appshunter.io/developer/1549440619) |

## 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


### CircuitWay

[App page](https://appshunter.io/ios/app/circuitway-circuit-simulator/id6751744974)

Design, simulate, and analyze analog and digital electronic circuits on your device. Explore numerous example circuits and a vast library of components, including support for Verilog and Arduino modeling. Perform transient, DC sweep, AC, and FFT analyses with waveform manipulation.

**Highlights:** Analog and digital circuit simulation, Extensive library of 106+ components, Support for Verilog and Arduino modeling, Transient, DC sweep, AC, and FFT analysis, Waveform manipulation and math expressions, 97 example circuits for learning

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $2.99 | per month |
| Quarterly Subscription | $6.99 | per 3 months |
| Annual Subscription | $19.99 | per year |


## Frequently asked questions

### Is 555 Timer & Oscillators Guide free?

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

### Is CircuitWay free?

CircuitWay is free to download, with in-app purchases available.

### Do 555 Timer & Oscillators Guide or CircuitWay have ads?

555 Timer & Oscillators Guide shows ads; CircuitWay does not.

### Which is updated more often, 555 Timer & Oscillators Guide or CircuitWay?

555 Timer & Oscillators Guide ships an update every 5 months, and CircuitWay monthly. Most recently, 555 Timer & Oscillators Guide was updated on October 19, 2026 and CircuitWay on October 25, 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.*