Comparison

EE ToolKit PRO vs iStepOverSigner

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

This comprehensive toolkit offers over 160 electronic applications, calculators, and reference sections for electronics engineers, students, and hobbyists. It includes features like a multi-functional keyboard, color code tools, audio scope, and circuit simulations, with ongoing improvements and updates.

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

This is the brand-new Electronics Engineering ToolKit PRO! 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! !!! This is a UNIVERSAL App - for iPhone and iPad !!! 100% PRO from the beginning without any In-App purchase! 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

iStepOverSigner

Features
Read full description

Use your iPad or iPhone to capture signatures In conjunction with the signature software eSignatureSuite*, iPhones or iPads are easy to use as signature capture devices. To sign electronic documents, you will need the free iStepOverSigner app on your iPhone or iPad. When signing your electronic signature will be captured by the signature app. Both typeface and biometric data (time elapsed) will be stored in excellent quality**. *Including Hardware API, Software API and EasySigner **The maximum temporal and local resolution are preset by your smartphone hardware. Further information and data available on request. *** Features *** Signing documents The signature is captured as precisely as possible via your iPhone or iPad, inseparably linked with the document and transferred to the signature software eSignatureSuite, which then links your typeface and highly encrypted biometric data with the document Secure signature The biometric signature data is securely encrypted in the iPhone or iPad and linked to the document in such a way that it cannot be misused with another document. A public RSA key (4096 bit) ensures that the biometric data cannot be decrypted without accessing the relevant private RSA key. However, this is stored with a notary, who has also generated the key pair. In case of doubt, only this process enables the operator to prove that he himself was unable to decrypt the biometric data and misuse it in different or changed documents. In addition, every signature is provided with a digital signature by the software so that each recipient can check the integrity of the document e.g. with the aid of Adobe Reader.

Screenshots

EE ToolKit PRO4 screens
iStepOverSigner2 screens

Verdict

The call

The clearest difference is price: iStepOverSigner at Free against EE ToolKit PRO's $9.99. EE ToolKit PRO's advantage is update cadence (every 3 months vs every 10 months). On ads, in-app purchases, device support and iOS requirement 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

iStepOverSigner is free to download; EE ToolKit PRO costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

EE ToolKit PRO ships an update every 3 months, iStepOverSigner every 10 months. The most recent releases landed on October 17, 2026 and October 5, 2026 respectively.

Scorecard2 real differences · 8 level
EE ToolKit PRO versus iStepOverSigner: the parameters behind the verdict, then further details
ParameterEE ToolKit PROiStepOverSigner
Price$9.99Free — better
Rating4.9 (293 ratings) — better—
Positive reviews89.6% of reviews—
Number of ratings293 — better—
Update frequencyEvery 3 months — betterEvery 10 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.011.0 — better
Further details — not scored
Size289 MB12 MB
Age rating4+4+
DeveloperThomas GruberStepOver International GmbH

Bugs and requests

EE ToolKit PRO

Reported bugs

3 issues
  • 7400 routine causes app to close
  • Resistor value calculation issues
  • Compatibility problems with newer iOS versions

Requested features

5 requests
  • Add support for vacuum tubes
  • Implement logarithmic frequency sweep
  • Include more component pinout information
  • Integrate a circuit builder/simulator
  • Add DB to RMS and peak-to-peak conversion

iStepOverSigner

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

EE ToolKit PRO

No in-app purchases

None

iStepOverSigner

No in-app purchases

Questions

Is EE ToolKit PRO free?
EE ToolKit PRO costs $9.99, with no in-app purchases.
Is iStepOverSigner free?
iStepOverSigner is free to download, with no in-app purchases.
Do EE ToolKit PRO or iStepOverSigner have ads?
Neither EE ToolKit PRO nor iStepOverSigner shows ads.
Which is updated more often, EE ToolKit PRO or iStepOverSigner?
EE ToolKit PRO ships an update every 3 months, and iStepOverSigner every 10 months. Most recently, EE ToolKit PRO was updated on October 17, 2026 and iStepOverSigner on October 5, 2026.

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