Software Alternatives, Accelerators & Startups

CircuitSim VS Exist

Compare CircuitSim VS Exist and see what are their differences

Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

CircuitSim logo CircuitSim

Design and simulate electronic circuits in your browser. Full SPICE engine, 3,000+ components, schematic editor, and waveform charts. Free to get started.

Exist logo Exist

Track everything in one place, understand your life.
  • CircuitSim Circuit Editor
    Circuit Editor //
    2026-08-11
  • Exist Landing page
    Landing page //
    2022-07-19

CircuitSim

$ Details
freemium $2.99 / Monthly (15 Components per circuit)

CircuitSim features and specs

  • Free and accessible
    CircuitSim is a free, browser-based (and downloadable) digital logic circuit simulator, making it easy for students and hobbyists to access without any cost or licensing barriers.
  • Educational focus
    Designed primarily for teaching digital logic design, it provides an intuitive way to build and test circuits, making it popular in academic settings like computer science and engineering courses.
  • Simple, intuitive interface
    The drag-and-drop interface for placing gates, wires, and components is user-friendly, especially for beginners learning digital logic concepts for the first time.
  • Subcircuit support
    Users can create subcircuits and reuse them as components in larger designs, which helps in building more complex systems in a modular and organized way.
  • Open-source project
    CircuitSim is open-source, allowing developers and educators to inspect, modify, or contribute to the tool, and fostering community-driven improvements.

Exist features and specs

  • Comprehensive Data Integration
    Exist integrates data from various services such as fitness trackers, social media, sleep monitors, and more, allowing for a wide range of data collection and analysis.
  • Personal Insights
    It provides personalized insights and correlations based on the data collected, helping users to better understand their habits and improve their lifestyle.
  • Custom Tracking
    Users can create custom tags to track specific activities or behaviors that are important to them, offering a high degree of personalization.
  • API Access
    Exist offers an API, enabling users to create custom integrations and extend the platform's functionality.
  • Mobile App Availability
    Exist is available as a mobile app, making it easy for users to input and check their data on the go.

Possible disadvantages of Exist

  • Subscription Cost
    Exist requires a paid subscription after the initial trial period, which may be a barrier for some users.
  • Privacy Concerns
    Collecting and integrating a wide range of personal data can raise privacy concerns, especially if the service is ever compromised.
  • Data Overload
    The sheer amount of data available can be overwhelming for some users, making it challenging to identify the most relevant insights.
  • Learning Curve
    New users may face a learning curve as they try to navigate the platform and make the best use of its features.
  • Limited Free Features
    The free version offers limited functionality, which may not be sufficient for users looking to fully explore the platform before committing to a subscription.

CircuitSim videos

No CircuitSim videos yet. You could help us improve this page by suggesting one.

Add video

Exist videos

Exist - Board Game Review

More videos:

  • Review - Exist Review
  • Review - Daiwa Exist Spinning Reel [Review & Unboxing]

Category Popularity

0-100% (relative to CircuitSim and Exist)
Circuit Simulators
100 100%
0% 0
Health And Fitness
0 0%
100% 100
Circuit Design
100 100%
0% 0
Productivity
0 0%
100% 100

Questions & Answers

As answered by people managing CircuitSim and Exist.

Why should a person choose your product over its competitors?

CircuitSim's answer

CircuitSim earns the choice when the constraint is the browser: students on Chromebooks, online courses, schools where IT will not install desktop software. Within that space, CircuitSim pairs true SPICE simulation with classroom licensing, private student seats that need no login, and an importer for Digilent's Multisim Live files.

What makes your product unique?

CircuitSim's answer

CircuitSim runs a real SPICE engine entirely in the browser. Simulation results match what desktop SPICE tools produce, with nothing to install. On top of the simulator there is a large searchable component catalog and classroom groups with private student seats: a teacher shares a join link and students work without creating accounts, which keeps classes clear of the student-privacy problems that come with provisioning accounts. CircuitSim also imports designs from Digilent's Multisim Live, which matters right now because Digilent is retiring Multisim Live in September 2026.

How would you describe the primary audience of your product?

CircuitSim's answer

Educators and students, mostly. The core user teaches circuits somewhere that desktop software is not an option: community college electronics programs, university ECE labs, online courses, and K-12 engineering classes where students are on Chromebooks. Outside the classroom, hobbyists and working engineers use CircuitSim for quick analog and digital simulation without installing anything. A large share of new users right now are instructors moving their courses over from Digilent's Multisim Live before it retires in September 2026.

Who are some of the biggest customers of your product?

CircuitSim's answer

Community college electronics and engineering technology programs University ECE departments running browser-based circuit labs K-12 engineering and CTE courses on Chromebooks Instructors migrating classes from Digilent's Multisim Live ahead of its September 2026 retirement

User comments

Share your experience with using CircuitSim and Exist. For example, how are they different and which one is better?
Log in or Post with

Social recommendations and mentions

Based on our record, Exist seems to be more popular. It has been mentiond 43 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

CircuitSim mentions (0)

We have not tracked any mentions of CircuitSim yet. Tracking of CircuitSim recommendations started around Aug 2026.

Exist mentions (43)

  • Apple courier may have stolen 2 MacBooks, () Apple is not going to help
    As someone who has been on and off the Degoogle train (I ran full LineageOS without Google Play at one point) and is now pretty deep in iOS territory, I'd say the main thing for me has been email. I've used https://www.fastmail.com for a great deal of years now, which is also home to my calendar as well so there's nothing much of value tied to my Google account. YouTube subscriptions would be annoying to lose but... - Source: Hacker News / almost 2 years ago
  • Ask HN: Tell us about your project that's not done yet but you want feedback on
    You may want to look into https://exist.io/. It's a very indie developer duo out of Australia (IIRC). And also IIRC they were looking for a buyer on Twitter some time ago. - Source: Hacker News / about 3 years ago
  • Ask HN: Anyone using or working on a life dashboard?
    I have used this previously when tracking health metrics and I couldn't much else that had integrations. https://exist.io/. - Source: Hacker News / about 3 years ago
  • Tracking Apps
    Hey guys, thinking of tracking wellness metrics such as sleep water intake etc to a dashboard/app. The main tools I have found are Exist.io, Gyrosco.pe, and conjure.so. For those of you who have tried them I would love to know what are the pros and cons with each one? Or if you have any better ones any help is greatly appreciated! Source: about 3 years ago
  • Best apps to use
    Hey guys, thinking of transporting my quantified self journey to a dashboard/app. The main tools I have found are Exist.io, Gyrosco.pe, and conjure.so. For those of you who have tried them I would love to know what are the pros and cons with each one? Source: about 3 years ago
View more

What are some alternatives?

When comparing CircuitSim and Exist, you can also consider the following products

Multisim - Multisim is industry standard SPICE simulation and circuit design software for analog, digital, and power electronics in education and research.

Gyroscope - Gyroscope is a personalized dashboard for tracking your life.

CircuitLab - Sketch, simulate, and share your circuits, entirely in your browser -- no install required.

Daylio - Daylio enables you to keep a private diary without having to type a single line.

DCACLab - Electronic circuit simulator for STEM works online, Simulate and troubleshoot broken circuits in a rich simulation environment, easy to learn.

Bearable App - User-friendly health tracking