Comparison

EE ToolKit vs GD & T Guide

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

GD & T Guide

This app provides a digital version of a pocket guide to Geometric Dimensioning and Tolerancing (GD&T). It explains GD&T symbols, their application on engineering drawings, and common inspection techniques. It also includes tools for converting measurements and calculating position tolerances.

Highlights
  • GD&T symbol descriptions
  • Engineering drawing application
  • Inspection techniques
  • Reporting methods
  • Measurement conversion tool
  • Fastener formula calculator
Features
Read full description

This is an App version of our best-selling printed pocket guide on Geometric Dimensioning and Tolerancing (GD&T). In its 77 pages, it will give a description of GD&T symbols and their use on engineering drawings. Common inspection techniques and reporting methods are also included in the descriptions. There is a conversion app for X, Y rectangular measurements to position tolerance zones. There is a fixed and floating fastener formula App to calculate position tolerances using the standard screw and drilled clearance holes. Available in both inch and mm.

Screenshots

EE ToolKit4 screens
GD & T Guide3 screens

Verdict

The call

The clearest difference is review sentiment: EE ToolKit at 90% against GD & T Guide's 20%. EE ToolKit also leads on rating (4.7 vs 3.0) and ratings volume (1.4K vs 9). On price, update cadence, ads and in-app purchases 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 GD & T Guide sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

EE ToolKit holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: EE ToolKit has 1.4K ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 90% of EE ToolKit's written reviews are positive against 20% of GD & T Guide's.

UpkeepUpdate frequency

EE ToolKit ships an update every 3 months, GD & T Guide every 5 months. The most recent releases landed on October 18, 2026 and October 14, 2026 respectively.

Scorecard3 real differences · 7 level
EE ToolKit versus GD & T Guide: the parameters behind the verdict, then further details
ParameterEE ToolKitGD & T Guide
PriceFreeFree
Rating4.7 (1.4K ratings) — better3.0 (9 ratings)
Positive reviews90.2% of reviews — better20.0% of reviews
Number of ratings1.4K — better9
Update frequencyEvery 3 months — betterEvery 5 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.011.0 — better
Further details — not scored
Size289 MB55 MB
Age rating4+17+
DeveloperThomas GruberGeoTol Inc.

Customer experience

EE ToolKit

All ratings1,397 ratings
Positive92.5%
Neutral3.3%
Negative4.2%
Written reviews583 reviews
Positive90.2%
Neutral2.7%
Negative7.0%

GD & T Guide

All ratings9 ratings
Positive44.4%
Neutral0.0%
Negative55.6%
Written reviews5 reviews
Positive20.0%
Neutral0.0%
Negative80.0%

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

GD & T Guide

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
2 purchases

GD & T Guide

One-time2
  • Full Book$1.99
  • Geometric Dimensioning and Tec$3.99

Questions

Is EE ToolKit free?
EE ToolKit is free to download, with in-app purchases available.
Is GD & T Guide free?
GD & T Guide is free to download, with in-app purchases available.
Which has better reviews, EE ToolKit or GD & T Guide?
EE ToolKit is rated higher. EE ToolKit averages 4.7 out of 5 from 1.4K ratings, while GD & T Guide averages 3.0 from 9 ratings.
Do EE ToolKit or GD & T Guide have ads?
Neither EE ToolKit nor GD & T Guide shows ads.
Which is updated more often, EE ToolKit or GD & T Guide?
EE ToolKit ships an update every 3 months, and GD & T Guide every 5 months. Most recently, EE ToolKit was updated on October 18, 2026 and GD & T Guide on October 14, 2026.

Other comparisons