# Arduino Pocket Reference — user reviews > 25 indexed App Store user reviews of Arduino Pocket Reference by Vipin Nair, rated 2.40/5 from 17 ratings. - Source: https://appshunter.io/ios/app/arduino-pocket-reference/id969849288/reviews - App overview in markdown: https://appshunter.io/ios/app/arduino-pocket-reference/id969849288.md - Rating breakdown: 5★ 5 · 4★ 1 · 3★ 0 · 2★ 1 · 1★ 10 ## Newest reviews (8 of 25) ### 1/5 — Keeps crashing *2017-03-22, version 2.1* This app crashes after a minute or two. ### 1/5 — Useful, but... *2016-08-22, version 1.8* This has got a lot of useful information, clearly explained but it is very unstable on my iPhone 6s Plus. Crashes about 33% of the time during use or on opening. Happy to change my rating when this issue is fixed. ### 1/5 — Crashes constantly *2016-07-17, version 1.8* Seems to have alot of potential, but the rapid crashing is unbearable. ### 1/5 — Advertisements *2016-03-17, version 1.6* Are just too obnoxious to focus on the app. ### 1/5 — Unusable *2016-02-07, version 1.4* Every click starts ad video!!! ### 1/5 — Popup Ads *2016-02-07, version 1.4* This looks like it could be a useful app if it wasn't for the fact that a full page ad pops up about every 30 seconds and stays up for 5 seconds (with a countdown). One of the worst implementations of ad-supported apps that I've ever seen. ### 1/5 — Does what it says but is frustrating *2016-02-02* Helpful app, but continually pops up full page ads which you have to close manually. Just gets frustrating to use. Deleted it. Sorry. ### 1/5 — don’t download - advertisements annoying *2015-09-08, version 1.1* very poor. avoid. ## Most critical reviews (10 lowest-rated) ### 1/5 — Annoying ads every 15 seconds *2020-03-06, version 3.3* I wouldn’t mind if ads were embedded, but this app opens safari every 15 seconds with ads pages, which makes impossible to focus in the information we need. DELETED THE APP IMMEDIATELY. ### 1/5 — Suspicious activity *2020-02-03, version 3.1* Keeps asking for me to sign in with my Apple ID. Very suspicious. Deleted. ### 1/5 — Still has ads *2019-08-15, version 3.0* Paid the .99 to remove ads but ads did not go away. What’s up with that? ### 1/5 — Don’t waste you money *2019-08-10, version 2.9* Keeps locking up and full of adverts ### 1/5 — Would be great if... *2019-07-10, version 2.9* Constantly asks for password. Adverts takes up usable space, afraid if purchased annoyances would too.. ### 1/5 — Not really a reference *2018-02-11, version 2.5* I was looking for a replacement for “Arduino Companion”, which doesn’t work with iOS 11. Something to look up functions and libraries, kinda like a reference. This ain’t that. ### 1/5 — Adds Removal No Go *2018-02-02* Pay to remove adds, adds go away, restart app, adds be back, pay to remove add, results in restoring purchase for free, adds go away, restart app, adds be back. Now put this in the loop() area of your sketch, and bingo, your first sketch that matches the operation of this app. ### 1/5 — Always ask for iTune password *2018-01-23, version 2.5* I don’t understand why this app always asks me to enter my iTune password, I began having concern about safety to use it ### 1/5 — Poorly made app *2017-08-25, version 2.2* I had hope for this app, but it falls flat. Upon opening the app immediately asks for your iTunes password at least three times. When you're able to get to actual information, it is obvious that it is very rudimentary and easily found doing a simple internet search. ### 1/5 — Crashes *2017-07-26, version 2.2* Crashes and too many adverts ## Most praised reviews (7 highest-rated) ### 5/5 — Amazing and Super Helpful *2021-10-23, version 3.4* I love this guide application, it’s so useful and helpful. I learned a TON from just this one guide. ### 5/5 — Pretty nice *2020-08-09, version 3.3* Works great no constant ads ### 5/5 — A great learning tool *2015-05-07, version 1.0* This app is well written and has a collection of over 50 projects described in detail– Complete with drawings of wiring, Theory of operation, and code listing with easy to understand explanations– I would definitely recommend it! ### 3/5 — Good guide but keeps crashing *2017-08-01, version 2.2* I would have bought it but it keeps crashing. When it's updated to stop the crashes this will be one of the few apps I will pay to stop the really naff adverts. ### 2/5 — Crashes! *2017-06-22, version 2.2* This app seems to be awesome but it crashes for no reason. Please fix!!!!! ### 2/5 — Great Source, especially for the beginner! *2016-10-24, version 2.0* Getting starting with the Arduino can be and little daunting at times, but this pocket reference helps make things a little clearer when when you want to read up on the go! I'm only giving it 2 Stars though because it crashes regularly! Why do you not mention the Uno? ### 2/5 — Sadly not so great *2016-06-12, version 1.8* Scattered, information seemingly culled from public sources. Far from complete. App crashes constantly. --- *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 2026-06-02.*