Comparison

EE ToolKit vs Circuit Simulator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

EE ToolKit

This comprehensive toolkit offers over 160 electronic applications, calculators, and reference tools for engineers, students, and hobbyists. It features a multi-functional keyboard, color code tools, audio scope, frequency generator, and component references with datasheet access. The app supports real-time circuit simulations and includes a file manager for saving calculations.

Highlights
  • Over 160 electronic applications
  • Multi-functional keyboard
  • Color code and SMD code tools
  • Audio scope and frequency pitch detector
  • Frequency generator
  • Component reference section with datasheet access
  • Real-time circuit simulations
Features
Read full description

This is the brand-new Electronics Engineering ToolKit! The HIGHLY RATED and RECOMMENDED productivity app. Users say it is the BEST and MOST PRACTICAL Electronics App in the whole App Store. From an electronics enthusiast with a master's degree in Electronics Engineering. This App is for engineers, students and hobbyists and anyone interested in Electronics Engineering. The App gets CONSTANT and POWERFUL improvements! !!! This is a UNIVERSAL App - for iPhone and iPad !!! With In-App upgrade to PRO. If you don't like In-App purchases, you can also download the PRO version (red icon with PRO text) which is full PRO from the beginning without any In-App purchase. WHAT OTHER USERS ARE SAYING: “Awesome app, constant and powerful improvements” This app was worth every penny I paid for it back when I bought it years ago. Since then, I’ve regularly used it at work and found it to be an excellent, quick tool to use. The most impressive aspect of this app are the constant and VERY impressive updates! Massive feature additions and very easy to use interface! The list of capabilities this app has makes it an amazing value for truly anyone involved in electronics. “Latest version makes this an exceptional tool” The EE Toolkit was always a very useful tool, but with the additions in the latest version it is truly an exceptional tool. The author is extremely diligent in managing bugs and improving the tool. “A superb app highly recommended” Fantastic application. Very useful. Always updated. Good developer. Lots of great bonus tools. Just love it. "Incredible useful, worth the money" I have had this app for a while now. Originally as an Electrical Engineering student I didnt really use it but once I was out in the field it became my bible. I definitely recommend to any engineering students/professionals alike. I also recommend buying the Pro version because it is definitely worth it. FEATURES OF THE EE TOOLKIT: Ω more than 160 electronic applications Ω amazingly great multi-functional keyboard Ω huge selection of color code tools and SMD code tools Ω audio scope and a frequency pitch detector Ω favorites page only for the tools that you have marked as favorite Ω full-featured frequency generator Ω extra large component reference section (incl. 7400 Series, PIC family, etc.) with the option to open pdf datasheets live or by e.g. iBooks Ω 555 Timer Tools with the most important application examples Ω extensive collection of Single Board Computers (more than 120 different boards!!!) Ω PCB trace impedance tools for several different structures Ω simple and quick unit conversion within the single calculators Ω fast on-the-fly conversions and calculations Ω real-time circuit simulations of the example circuits Ω support for preferred E series, sliders and min/max calculations Ω auto-save of all entries over several sessions Ω file manager to save and load individual calculations Ω built-in access to your iCloud Ω formula search tool with quick links to the tool which uses the formula Ω and many many more

About

Circuit Simulator

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.

Highlights
  • Real-time electronic circuit simulation
  • Digital circuit simulation
  • Voltage and current analysis
  • Multichannel oscilloscope
  • Multimeter tools
  • Circuit design and tuning
Features
Read full description

VoltSim is a realtime electronic circuit simulator like Multisim, SPICE, LTspice, Altium or Proto for circuit design with a better user experience. VoltSim is a complete circuit app in which you can design circuits with various components and simulate an electric or digital circuit. During simulation you can check voltage, current and many other variables. Check signals on multichannel oscilloscope or multimeter and tune your circuit in real time! You can also use VoltSim as logic circuit simulator and perform digital electronic analysis! This app will help you visualize how the voltage varies across the circuit and how current flows through it. T&C: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

EE ToolKit4 screens
Circuit Simulator4 screens

Verdict

The call

EE ToolKit and Circuit Simulator both sit at 4.7 stars, but that hides the real split: 90% of EE ToolKit's written reviews are positive against 73% of Circuit Simulator's. EE ToolKit also leads on ratings volume (1.4K vs 72) and iOS requirement (12.0 vs 15.3). On price, rating, update cadence and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. EE ToolKit sells 1 one-off in-app purchase and Circuit Simulator sells 8 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for EE ToolKit against 4.7 for Circuit Simulator. That said, the two scores are not equally well evidenced: EE ToolKit has 1.4K ratings behind it against 72, so its average is the more settled of the two. Written reviews are what separate them: 90% of EE ToolKit's written reviews are positive against 73% of Circuit Simulator's.

UpkeepUpdate frequency

EE ToolKit ships an update every 3 months, Circuit Simulator every 6 weeks. The most recent releases landed on September 23, 2026 and September 20, 2026 respectively.

Scorecard3 real differences · 7 level
EE ToolKit versus Circuit Simulator: the parameters behind the verdict, then further details
ParameterEE ToolKitCircuit Simulator
PriceFreeFree
Rating4.7 (1.4K ratings)4.7 (72 ratings)
Positive reviews90.2% of reviews — better72.7% of reviews
Number of ratings1.4K — better72
Update frequencyEvery 3 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.3
Further details — not scored
Size289 MB103 MB
Age rating4+4+
DeveloperThomas GruberSindhu Gopi

Customer experience

EE ToolKit

All ratings1,397 ratings
Positive92.5%
Neutral3.3%
Negative4.2%
Written reviews582 reviews
Positive90.2%
Neutral2.7%
Negative7.0%

Circuit Simulator

All ratings72 ratings
Positive93.1%
Neutral2.8%
Negative4.2%
Written reviews11 reviews
Positive72.7%
Neutral9.1%
Negative18.2%

Bugs and requests

EE ToolKit

Reported bugs

2 issues
  • Locked features not unlocking properly
  • Certain tools and calculators not functioning as expected

Requested features

4 requests
  • Add circuit simulation capabilities
  • Include more microcontroller and automotive-related content
  • Improve zooming and readability on certain screens
  • Implement Kirchhoff's laws and node analysis tools

Circuit Simulator

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

EE ToolKit

One-time1
  • Complete EE ToolKit Pro Upgrade$9.99
8 purchases

Circuit Simulator

Subscriptions1
  • Extensions Subscription$0.991 Month
One-time7
  • Sensors Extension$0.99
  • Custom Chips Extension$1.99
  • Instruments extension$2.99
Show 4 more
  • Analog Extension$3.99
  • Misc Extension$3.99
  • Digital Extension$3.99
  • Extension Pack$12.99

Questions

Is EE ToolKit free?
EE ToolKit is free to download, with in-app purchases available.
Is Circuit Simulator free?
Circuit Simulator is free to download, with in-app purchases available.
Which has better reviews, EE ToolKit or Circuit Simulator?
EE ToolKit and Circuit Simulator are both rated 4.7 out of 5 on the App Store, from 1.4K and 72 ratings respectively.
Do EE ToolKit or Circuit Simulator have ads?
Neither EE ToolKit nor Circuit Simulator shows ads.
Which is updated more often, EE ToolKit or Circuit Simulator?
EE ToolKit ships an update every 3 months, and Circuit Simulator every 6 weeks. Most recently, EE ToolKit was updated on September 23, 2026 and Circuit Simulator on September 20, 2026.

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