Timer 555 Calculator vs Circuit Simulator Q
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Timer 555 Calculator
Calculate monostable and astable circuits for electronics projects. Determine pulse width and frequency, find component combinations, and save/upload data. Supports multiple languages.
- Monostable circuit pulse width calculation
- Astable circuit frequency calculation
- Component combination finder
- Save component values to CSV
- Upload CSV via AirDrop/iCloud Drive
- Multi-language support
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This app is used to calculate monostable and astable circuit. Features * Calculate pulse width of monostable circuit * Calculate frequency of astable circuit * Find out combination of components making a desire pulse width in monostable circuit * Find out combination of components making a desire frequency in astable circuit * Saving component values in CSV file * Upload generated CSV files via AirDrop or iCloud Drive * Support English, German, French, Italian, Spanish, Portuguese, Japanese, Korean, Russian
Circuit Simulator Q
Design and simulate complex digital logic circuits with an intuitive interface. Explore basic gates, build counters, ALUs, and even create your own processors. This tool brings your digital electronics ideas to life.
- Advanced circuit design
- Qnet netlist algorithm
- Build counter circuits and flip-flops
- Construct Arithmetic Logic Units (ALUs)
- Design custom processors
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Welcome to Circuit Simulator Q! Unleash your creativity and dive into the world of digital circuit design! With Circuit Simulator Q, you can design and simulate logic circuits ranging from the simplest to the most complex designs. Our intuitive interface allows you to bring your ideas to life effortlessly. Key Features: Advanced Circuit Design: Create intricate logic circuits, from basic gates to complex architectures, all at your fingertips. Qnet Algorithm: Experience the power of our superior netlist algorithm, Qnet. Capable of handling the most complex circuits and branches, Qnet ensures seamless netlist generation while being resilient to loops. Build Countable Circuits: Design your own counter circuits and flip-flops, exploring the fundamentals of digital electronics. Arithmetic Logic Units: Construct arithmetic logic units (ALUs) that enable you to perform various calculations and operations. Create Your Own Processor: Push the boundaries of your imagination by designing your very own processors, integrating logic components like never before. Join a community of innovators and transform your ideas into reality with Circuit Simulator Q! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: Timer 555 Calculator at 100% against Circuit Simulator Q's 0%. Timer 555 Calculator also leads on rating (3.9 vs 2.7). Circuit Simulator Q's advantage is update cadence (every 2 days vs every 3 months). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Timer 555 Calculator sells 1 one-off in-app purchase and Circuit Simulator Q sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Timer 555 Calculator holds the better App Store score, 3.9 against 2.7. Both are backed by a comparable volume of ratings — 8 and 3 respectively. Written reviews point the same way: 100% of Timer 555 Calculator's written reviews are positive against 0% of Circuit Simulator Q's.
Timer 555 Calculator ships an update every 3 months, Circuit Simulator Q every 2 days. The most recent releases landed on September 24, 2026 and September 19, 2026 respectively.
| Parameter | Timer 555 Calculator | Circuit Simulator Q |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (8 ratings) — better | 2.7 (3 ratings) |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 8 — better | 3 |
| Update frequency | Every 3 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.2 | 13.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 190 MB |
| Age rating | 4+ | 4+ |
| Developer | Siu Yuen Ho | Ali Mert TUFEKCI |
Customer experience
Timer 555 Calculator
Circuit Simulator Q
In-app purchases
Timer 555 Calculator
- Unlock Pro feature$0.99
Circuit Simulator Q
- Weekly Plan$4.997 Days
- Yearly Plan$29.991 Year
Questions
Is Timer 555 Calculator free?
Is Circuit Simulator Q free?
Which has better reviews, Timer 555 Calculator or Circuit Simulator Q?
Do Timer 555 Calculator or Circuit Simulator Q have ads?
Which is updated more often, Timer 555 Calculator or Circuit Simulator Q?
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