# Electronics > All-in-one electronics toolkit with calculators and chip pin-out references. (iPhone/iPad app by Adam Hartley.) - Source: https://appshunter.io/ios/app/electronics/id731410413 (this page in markdown: same URL + `.md`) - Developer: [Adam Hartley](https://appshunter.io/developer/460056042) - Category: Utilities, Education - Price: Free - Rating: 4.30/5 from 16 App Store ratings · 11 written reviews indexed - Age rating: 4+ - Requires: iOS 10.0 · 2 MB - Languages: American English - Released: 2013-12-06 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/electronics/id731410413/reviews.md ## What is Electronics? Electronics is a powerful all-in-one toolkit for engineers, hobbyists and anyone interested in electronics. Supports Apple Watch! Now you can calculate 4 band resistors, inductors and view chip pin outs right on your wrist. More to come soon! The simple and easy to use interface ensures you get the information you need quickly and efficiently. Electronics key features: • Resistor colour code calculator • SMD resistor code calculator • Ohms law calculator • LED current limiting resistor calculator • Axial inductor color code calculator • Reactance and resonance calculator • Potential / Voltage divider • Capacitor charge & energy calculator • Wheatstone bridge calculator • Pin-out reference for common 4000 series CMOS and 7400 series chips ## Key features - Resistor colour code calculator - SMD resistor code calculator - Ohms law calculator - LED current limiting resistor calculator - Axial inductor color code calculator - Pin-out reference for common chips ## Recent user reviews (10 of 11) All indexed reviews: https://appshunter.io/ios/app/electronics/id731410413/reviews.md ### 3/5 — Ohm law calculator problem *2023-04-19* Last update on IPhone 13, you can't use the Ohm law calculator, you cannot hit the calculate or clear button, numerical keyboard keep these buttons covered and no way to drop the keyboard. ### 4/5 — Confused *2018-09-24, version 3.0* I love the app, it's a 10/10, but recently the Apple Watch version of the app disappeared and I'm wondering why ### 4/5 — App store pics not accurate *2018-07-23, version 3.0* Its not obvious how to get to functions other than resister color codes when in portrait mode. Pics show a menu. There is none. There is a slide out tray from the left. Once I figured that out all is good. Worthwhile tool. ### 5/5 — I’m just an average guy so this helps *2018-07-14, version 3.0* I’m your basic diyer, slowly learning about electronics circuitry and basic design for dumb personal projects. This is a heaven sent for someone like me who has adhd and is still learning new concepts and ideas of basic electronics. Thank you ! ### 5/5 — Super *2018-07-10, version 3.0* This is all you need it’s a great app Congrats to the developer great job!! ### 5/5 — Lifesaver! *2015-10-12, version 2.0.1* Seriously a terrific app! Really clean interface, useful utilities, and awesome on Apple Watch! ### 5/5 — Very Handy Reference *2015-08-15, version 2.0.1* Although I'm not going to use this every day, it's fantastic reference to have if you do work with electronics; A+. Note I can't possibly imagine how this could get voted anything less than 3 stars, so obviously those that rated this only 1 star are either just totally oblivious or stupid. ### 4/5 — Small bug... *2015-07-16, version 2.0.1* Seems to work as designed but there's a small (very small) bug in the four band resistor colour code calculator: changing the tolerance does not change corresponding band color of the graphic. Not a big deal but this works for five and six band resistors. I am running iOS 8.4 on an iPhone 6. ### 5/5 — Best App Ever *2015-06-17, version 2.0* Love this app, helps me a lot!! ### 4/5 — Good *2015-01-26, version 1.4.2* Over all pretty good when doing lab work. If your lazy which I am when comes to looking up color code. Pin out is good but you need more chips like 7404 and 7segment led clock displays. ## Frequently asked questions about Electronics ### What is the Electronics app? Electronics is a utility app designed as a comprehensive toolkit for electronics enthusiasts. It provides various calculators for components like resistors and inductors, as well as chip pin-out references. ### What devices does the Electronics app support? The Electronics app is available on Apple TV, iPhone, iPad, and iPod. It also offers support for Apple Watch, allowing for on-wrist calculations. ### How often is the Electronics app updated? The latest version of the Electronics app is 3.0, last updated on May 4, 2018. While the app has not been updated recently, it offers a stable set of core features. ### What is the age rating for the Electronics app? The Electronics app has an age rating of 4+, making it suitable for a wide range of users interested in electronics. ### Does the Electronics app have ads? The provided data does not specify if the Electronics app contains advertisements. However, it is listed as free with no in-app purchases. ### What are the main calculation features in the Electronics app? The app includes calculators for resistor color codes (4-band and SMD), Ohms law, LED current limiting resistors, axial inductors, reactance and resonance, potential/voltage dividers, capacitor charge/energy, and Wheatstone bridges. ### Can I find chip pin-outs in the Electronics app? Yes, the Electronics app provides pin-out references for common 4000 series CMOS and 7400 series chips, which can be very useful for circuit design and troubleshooting. ### What is the user sentiment for the Electronics app? The Electronics app has a rating of 4.3 stars from 16 ratings, indicating generally positive user sentiment among its reviewers. ## Version history (last 5 releases) ### 3.0 — 2018-05-04 This app has been updated by Apple to display the Apple Watch app icon. A wild update appeared! This update is mainly a service update to provide a few fixes to minor issues and support for newer devices. - Fixes common most common causes for crash on startup - Fully supports iPhone X and 12.9" iPad Pro - Fixes incorrect band shown sometimes on the resistor calculator - Other miscellaneous fixes - Requires iOS 10 or above (No longer supports 32-bit devices) - Apple Watch app deprecated due to breaking changes in watchOS ### 2.0.1 — 2015-06-17 Thank you for 28,000 downloads! • Electronics is now 100% free. ### 2.0 — 2015-04-10 Electronics + Apple Watch. Now you can calculate 4 band resistors, inductors and view chip pin outs right on your wrist. More features coming soon. App changelog: • Electronics now requires at least iOS 8.0 • iPad now uses vectors for sharp, resolution independent images (introduced for iPhone in 1.4) • Re-written most of the calculation code for increased reliability, accuracy and performance • Improved iPhone layout on all screen sizes • Disabled the use of third party keyboards to prevent bug with the numpad floating around on the screen • Various fixes and improvements ### 1.4.2 — 2014-12-20 Xmas Sale: From now until 2 Jan 2015 save on Electronics Premium! • Fixes occasional crash when trying to purchase Electronics Premium within the app ### 1.4.1 — 2014-10-29 • Fixed bug where the SMD Resistor calculator would crash on some iPads following the previous update 1.4 • Support for iPhone 6 and iPhone 6 Plus Retina HD Displays • Added a help icon at the top right of most calculators, tap it to see relevant help for that calculator • Added custom numpad for number entry for improved compatibility • Component images are now made from vectors to improve sharpness regardless of display type • Minor bug fixes Need help or have any questions? Please email support@logiclevels.com Follow us @logiclevels ## Apps similar to Electronics | App | Rating | Price | Category | | --- | --- | --- | --- | | [Sensors Toolbox - Multitool](https://appshunter.io/ios/app/sensors-toolbox-multitool/id1383687190) | 4.2 (133) | Free | Utilities | | [Espressif Esptouch](https://appshunter.io/ios/app/espressif-esptouch/id1071176700) | 2.4 (17) | Free | Utilities | | [Ohms Law](https://appshunter.io/ios/app/ohms-law/id590727537) | 4.3 (7) | Free | Utilities | | [Resistors](https://appshunter.io/ios/app/resistors/id1569623792) | — | Free | Utilities | | [Ohm's Law Calculator](https://appshunter.io/ios/app/ohms-law-calculator/id1518919778) | 5.0 (2) | Free | Utilities | | [Power Calculator](https://appshunter.io/ios/app/power-calculator/id454548791) | 4.5 (2) | Free | Utilities | ## More apps by Adam Hartley - [ResistorKit](https://appshunter.io/ios/app/resistorkit/id944897684) All apps by Adam Hartley: https://appshunter.io/developer/460056042 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*