Circuit Simulator - VoltSim

Circuit Simulator - VoltSim

Realtime electronics lab

72 ratings
11 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • April 4, 2025
  • August 11, 2026

Features

Circuit Simulator - VoltSim screenshot #1 for iPhone
Circuit Simulator - VoltSim screenshot #2 for iPhone
Circuit Simulator - VoltSim screenshot #3 for iPhone
Circuit Simulator - VoltSim screenshot #4 for iPhone
Circuit Simulator - VoltSim screenshot #5 for iPhone
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About

Design and simulate electronic and digital circuits in real-time. Visualize voltage and current flow, and analyze circuit behavior with tools like oscilloscopes and multimeters. Offers a user-friendly experience for circuit design and digital electronic analysis.

Real-time electronic circuit simulation
Digital circuit simulation
Voltage and current analysis
Multichannel oscilloscope
Multimeter tools
Circuit design and tuning
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What's New in Circuit Simulator

1.0.0

August 11, 2026

Introducing circuit community, explore and share your circuits! Introducing cloud sync between your devices

Subscription plans

Extensions Subscription

Will enable all offline extensions for month

$0.991 Month
How to cancel Circuit Simulator subscription ⁉️
7

In-App Purchases

$1.99

Custom Chips Extension

Extension to enable custom chips and script chips

User reviews

Bugs and Advices

I just paid monthly in another account with another currency.
I rated two stars so maybe developers can notice.

1. Sometimes can’t edit pins in existing chips. (Can’t save.)
2. Sometimes the caret doesn’t move when editing project names.
3. Sometimes cannot add new components in a project. (Too many?)
4. I want to remove(hide) pin numbers. (I already have labels!)
5. Custom chips should be drawn one size smaller.
6. I want a “Move” mode to move components without clicking it first.
7. I want to double click in most editing modes to activate drag selection.
8. I want to copy a part of a project to another project. (Instead of copying the whole project and deleting everything else.)
9. When using the “Interact” mode, the “Push” switch should act like a “Push” switch instead of a “Switch” switch.
10. When duplicating a group of components, the new copy should appear in totally empty places. (Otherwise it will sometimes accidentally connect with other things.)
11. Sometimes “Undo” disables itself and it’s scary. I need more stable “Undo” and “Redo”.
12. I need “Rotate”, “Flip”, and “Rotate 180” for groups.
13. “Delete” button should be further away from everything else or ask before deleting.
14. When duplicating some single objects, I want the new copy to be at right below so I can use them together immediately.
15. When adding new components, they should appear near the center of the screen. (The biggest problem for new users to continue using.)
16. I want to use(copy) a group(like bulbs) in another project without it being a chip.
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It’s very very good

Easy to work and good for beginners

Great tool for learning

This app is great for learning about circuits and the behavior of different electrical components. Definitely recommend!

Wow.

This is honestly one of the best apps out there, better than other apps requiring either enormous amounts of ads or a 20 dollar subscription, but you guys only do a dollar a month, really cheap, i will think about getting it some time soon I suppose.

Best ios app for circuits

tbh best ios app for simulating circuits, even free version can do almost anything, other apps suck because they are either pay to use or barely even functional, this one is just good

Response from developer

Thanks a lot for your amazing feedback! 😊 We're really glad to hear that you're enjoying VoltSim. Our goal is to make powerful tools accessible to everyone, so it’s great to know the free version is helping you get the most out of it. If you ever have suggestions or ideas for improvements, feel free to reach out at voltsim.app@gmail.com — we’d love to hear from you!

FAQ

What is VoltSim used for?

VoltSim is used for designing and simulating electronic and digital circuits in real-time. It allows users to visualize voltage and current flow, and analyze circuit behavior using tools like oscilloscopes and multimeters.

What components can I use in VoltSim?

VoltSim supports various components for circuit design, enabling users to build both electric and digital circuits. The exact list of components is not detailed, but it aims to be a comprehensive circuit app.

Does VoltSim offer offline functionality?

The provided data does not specify whether VoltSim can be used offline. However, as a simulation tool, it may require an internet connection for certain features or updates.

How accurate is VoltSim's simulation?

VoltSim is described as a real-time electronic circuit simulator, aiming for a better user experience compared to established tools like Multisim and SPICE. User reviews, though limited, indicate a positive reception with a 4.5-star rating.

What devices is VoltSim available on?

VoltSim is available on iPhone, iPad, and iPod. It is designed to run on Apple's mobile operating systems.

What is the age rating for VoltSim?

VoltSim has an age rating of 4+, making it suitable for a wide range of users, including younger learners interested in electronics.

How often is VoltSim updated?

The latest version of VoltSim is 0.3.17, last updated on December 4, 2025. This indicates a relatively active development cycle.

Does VoltSim have ads?

No, VoltSim does not contain advertisements. The app is free to download and use, with optional in-app purchases for extensions.