Comparison

EE ToolKit PRO for iPad vs Circuit Laboratory HD

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

Head to head
About

EE ToolKit PRO for iPad

This comprehensive toolkit offers over 160 electronic applications, calculators, and reference tools for electronics engineers, students, and hobbyists. It features a multi-functional keyboard, color code tools, audio scope, frequency generator, and component reference section with datasheet integration.

Highlights
  • Over 160 electronic applications
  • Multi-functional keyboard
  • Color code and SMD code tools
  • Audio scope and frequency detector
  • Component reference section with datasheets
  • 555 Timer tools
  • PCB trace impedance calculators
Features
Read full description

This is the brand-new Electronics Engineering ToolKit for iPad! The HIGHLY RATED and RECOMMENDED productivity app. Users say it is the BEST and MOST PRACTICAL Electronics App in the whole iTunes 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! !!! Please Note: this is the EE ToolKit PRO for iPad Only !!! If you are interested in the Universal-App for iPhone and iPad, please look for the EE ToolKit App with the red icon. The EE ToolKit PRO is the preferred Electronics App at schools and universities. It is available through the Volume Purchase Program with a discount for educational institutions. Many students, teachers and professors have downloaded the App and are using it during their studies and career. 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 Laboratory HD

This app allows users to design and analyze electronic circuits graphically. It supports various analysis types including DC, AC, multifrequency AC, and transient, with a wide range of components and measuring instruments.

Highlights
  • Graphical circuit design
  • DC analysis
  • AC analysis
  • Multifrequency AC analysis
  • Transient analysis
  • Component library
  • Measuring instruments
Features
Read full description

Circuit Lab HD is an electronic circuit analysis tool based on the modified node analysis method. It uses the same models of Spice. Four kind of analysis may be conducted: - DC: linear and non linear circuits with continuous voltage and current sources; - AC: linear and non linear circuits with sinusoidal voltage and current sources; - Multifrequency AC Analysis: linear and non linear circuits with sinusoidal voltage and current sources. It allows to analyze the circuit behavior in a range of frequencies. Useful to study the bandwidth of the circuit; - Transient: linear and non linear circuits, with sinusoidal and pulse voltage sources. User can graphically draw the circuit dragging and dropping components, then the circuit can be analyzed. Circuit may be controlled by means of the following gestures: - Drag: to move the circuit into the desired position - Tap on a component: to modify the component's parameters - Pinch: to zoom in and out - Double finger double Tap: to reset position and zoom level to the original values Tapping DC button, user gets voltage at each circuit's node. Tapping AC button, user gets voltage phasors at each circuit node or the bode graph of the voltage at each circuit node (see 06 BJT - Common Emitter). User can select the desired phasors to get the related graphs which may be controlled by means of the following gestures: - Drag: To move the chart in the desired position; - Pinch: To enlarge or shrinks the graph; - Double Tap with two fingers to restore the position and zoom level to the original values. Tapping Transient button, user can analyze circuit's behavior during time and get graphs of voltages and currents function of time. These graphs may be controlled by means of the following gestures: - Drag: To move the chart in the desired position; - Pinch: To enlarge or shrinks the graph; - Double Tap with two fingers to restore the position and zoom level to the original values. Moreover, user can enable a mobile cursor to read the values ​​in the different points of time (tap on the graph to display the cursor, tap to remove it and move it to read the values​​). Each circuit can contain: - Resistors - Capacitors - Inductors - Mutual coupled inductors - Independent sinusoidal voltage generators - Independent voltage pulse generators (with which you can also generate square, triangular and sawtooth waves); - Independent sinusoidal current generators - Controlled voltage generators - Controlled current generators - Operation Amplifier - Diodes - Zener Diodes - NPN and PNP Bjts - Channel-N and Channel-P JFet - Channel-N and Channel-P Mosfet In addition, there are the following measuring instruments: - Voltmeter; - Ammeter. User can manage his own components library to store most used components. For each component, a short video is available to demonstrate how to insert it into the circuit and edit it's characteristics. In addition, there are some more detailed video tutorials to learn how to use the application. Circuits may be easily stored and reused. User can print: - Circuits and component's list - Transient Analysis graphs (the mobile cursor is also printed if visible) Circuits can be easily shared through iCloud, by mail in the internal format so that can be reused by other users (on iPhone too) and in PDF format and they are compatible with Circuit Lab for Mac. Visit my site for video tutorials and details about operational amplifier's internal model, diode's internal model and Bjt's internal model.

Verdict

The call

The clearest difference is review sentiment: EE ToolKit PRO for iPad at 86% against Circuit Laboratory HD's 0%. EE ToolKit PRO for iPad also leads on update cadence (every 3 months vs every 27 months). Circuit Laboratory HD's advantage is price ($6.99 vs $9.99). On ads, in-app purchases, monetization model and device support 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

EE ToolKit PRO for iPad costs $9.99 and Circuit Laboratory HD $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

EE ToolKit PRO for iPad ships an update every 3 months, Circuit Laboratory HD every 27 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

Scorecard3 real differences · 7 level
EE ToolKit PRO for iPad versus Circuit Laboratory HD: the parameters behind the verdict, then further details
ParameterEE ToolKit PRO for iPadCircuit Laboratory HD
Price$9.99$6.99 — better
Rating4.8 (81 ratings) — better—
Positive reviews86.2% of reviews — better0.0% of reviews
Number of ratings81 — better—
Update frequencyEvery 3 months — betterEvery 27 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPadiPad
Requires iOS12.0 — better12.4
Further details — not scored
Size289 MB180 MB
Age rating4+4+
DeveloperThomas GruberFabrizio Boco

Customer experience

EE ToolKit PRO for iPad

All ratings79 ratings
Positive94.9%
Neutral2.5%
Negative2.5%
Written reviews109 reviews
Positive86.2%
Neutral3.7%
Negative10.1%

Circuit Laboratory HD

Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

EE ToolKit PRO for iPad

Reported bugs

8 issues
  • BJT icon for 2N3904 exists but component is missing
  • iPad version is exactly the same as iPhone/iPad Pro Universal version
  • No option to go back to menu page after selecting a category
  • Adjusting capacitor affects inductor circuit calculation
  • PD resistors are transposed
Show 3 more
  • Resistors for adjustable regulator calculator are transposed
  • Resistor/inductor impedance calculator does not work
  • Some bugs make certain circuits not function properly

Requested features

14 requests
  • Add BJT 2N3904 and other low noise general purpose parts
  • Add wiring for On On On switch
  • Add USB-C connector pin-outs
  • Improve resistor divider tool to recommend resistor values
  • Add vacuum tube amplifier information
Show 9 more
  • Add Field and waves information
  • Add transformer, inductor, and electromagnetism category
  • Include audio applications of the 555 timer
  • Add more reference circuits (active filters, op-amp, SMPS)
  • Add resistor ladder calculator
  • Add 4000 series ICs
  • Add transformer section with power factor calculations
  • Improve UI design and layout
  • Add dark mode option

Circuit Laboratory HD

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

EE ToolKit PRO for iPad

No in-app purchases

None

Circuit Laboratory HD

No in-app purchases

Questions

Is EE ToolKit PRO for iPad free?
EE ToolKit PRO for iPad costs $9.99, with no in-app purchases.
Is Circuit Laboratory HD free?
Circuit Laboratory HD costs $6.99, with no in-app purchases.
Do EE ToolKit PRO for iPad or Circuit Laboratory HD have ads?
Neither EE ToolKit PRO for iPad nor Circuit Laboratory HD shows ads.
Which is updated more often, EE ToolKit PRO for iPad or Circuit Laboratory HD?
EE ToolKit PRO for iPad ships an update every 3 months, and Circuit Laboratory HD every 27 months. Most recently, EE ToolKit PRO for iPad was updated on November 6, 2026 and Circuit Laboratory HD on November 2, 2026.

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