# iEngineer — user reviews > 159 indexed App Store user reviews of iEngineer by Perfectly Simple Apps LLC, rated 4.50/5 from 191 ratings. - Source: https://appshunter.io/ios/app/iengineer/id369825047/reviews - App overview in markdown: https://appshunter.io/ios/app/iengineer/id369825047.md - Rating breakdown: 5★ 142 · 4★ 29 · 3★ 8 · 2★ 5 · 1★ 7 ## What do users think of iEngineer? Overall sentiment: positive **Pros** - 🚀 Easy to navigate - 👍 Comprehensive information - 🔧 Useful for everyday work - ⚙️ Essential for engineers and machinists - 💡 Saves time compared to physical references **Cons** - 🐛 Occasional errors in torque and tensile strength data - 💰 Metric information requires paid upgrade - 🔍 Missing some thread types like NPT and BSPP **Commonly reported bugs** - Metric portion not working for some users - Camera access request for no apparent reason **Most requested features** - Add tap drill chart - Include clearance hole fits - Improve UI for larger displays - Add French language support ## Newest reviews (16 of 159) ### 4/5 — Additional Feature Suggestions *2023-05-25, version 2.4* Nice application. Please add tap drill chart and clearance hole fits. ### 4/5 — Great useful app with some small errors *2022-05-26* The app is very useful and convenient to use. I would give it a 5 star review, if it wasn’t for a few errors that can be easily rectified. For metric bolts of class 10.9 and 12.9 the proof strength is lower than what’s specified in the standards. Additionally, the calculation of the tensile stress area for all metric bolts is a bit off. Those two factors together leads the app to suggest a torque figure that’s lower than it should be. There’s an error in the tensile area calculation for SAE bolts too, but here it’s small enough to not really affect the suggested torque. ### 5/5 — Useful app *2022-02-20, version 2.4* Great pocket reference to have on hand in the workshop. Bought as a quick reference in the machine shop as books are far too expensive to use in that environment despite being laminated and this is less than a couple of quid! Extremely useful for threading reference for lathe and milling work. ### 4/5 — Great app *2021-11-13, version 2.4* Love the app. It’s very complete but needs pipe threads added. ### 5/5 — A must for fabricators or maintenance techs! *2021-06-15, version 2.4* Love this app! Quick and easy to use with all the information you need in one place. Great tech support also. ### 5/5 — 5 star *2021-04-16, version 2.4* Wouldn’t be without it very useful to have to n your pocket. ### 5/5 — Great app *2021-04-15, version 2.4* Great reference, valuable information. Thank you. ### 5/5 — Nicely Done ! *2021-03-19, version 2.4* Very simple, helpful and nicely presented. ### 5/5 — Outstanding Resource - Long Time User *2021-01-19* I have been using this app for many years. It has been an outstanding resource. My only complaint is there are no loose fit clearance hole sizes for US Screws. Tight and Normal fit are present for US Screws. I certainly will not remove a star for that minor complaint, since the remainder of the app is so great! Highly recommended. ### 5/5 — Engineering at it simplest and best *2020-11-06, version 2.4* Essential ### 4/5 — Great pocket guide *2020-06-01, version 2.4* Easy to use and a handy reference point. All critical joints should be verified anyway, but this helps narrow it down and gives enough data that with CoF factors of surface treatment on fasteners, you can get pretty close. Can at least tell u if there is a major problem with specs. ### 5/5 — Great app! Great Interface! *2020-04-28, version 2.4* Please don’t redesign this app and ruin it. ### 5/5 — Perfect *2020-03-27, version 2.4* Great when designing. Dimensions of all types of screw heads. Great app. ### 3/5 — Missing degrees on flat head. (Metric) *2019-12-17, version 2.4* Was trying to find out the degrees on a metric flat head screw but it’s not specified on chart. ### 5/5 — ios 13.2.3 Still Relevant *2019-11-22, version 2.4* Great app for choosing proper drill sizes and visualizing your closest metric or standard options... I've had it for years and it still does the job ios 13.2.3 ### 4/5 — Français *2019-08-25, version 2.4* Une version française serait grandement appréciée si non très bien ## Most critical reviews (10 lowest-rated) ### 1/5 — Communists *2024-05-05, version 2.4* Have to pay for commie sizes. What has this world come to. Money hungry pedophiles ### 1/5 — Ripoff *2020-05-25, version 2.4* I paid for the upgrade to ge metric specifications, now its not working. Gimme ny dam money back ### 1/5 — Removed metric screws so they can charge me again. *2020-02-28, version 2.4* No idea what happened but I lost my metric screws... I just used it last week... ### 1/5 — No support for iPhone X *2018-03-13, version 2.4* No support for iPhone X ### 1/5 — Great until update process *2017-01-18, version 2.3* Great app until I tried to open it one day and it said "iEngineer may slow down your iPhone. The developer of this app needs to update it to improve its capability" and your only option is "ok" This seems shady not updating through the normal app update process. Looks like malware or virus ### 1/5 — Rubbish US crap *2012-09-25, version 2.1.1* The Metric version is not part of this app you Buy it separate!! Useless to me ### 1/5 — metric screw information is £1.49 *2012-09-14, version 2.1.1* Yuk...avoid...avoid...avoid ### 1/5 — Advert *2011-05-05, version 1.1* What's that rubbish advert ! this is an engineering app that had a good chance of being good! Now it's just a delete and a bad ref Your ### 2/5 — Needs work *2020-07-09, version 2.4* The standard or US tab works but not the metric. That’s the one I really need. It won’t even let me purchase it ### 2/5 — Actualizar *2017-08-16, version 2.3* Favor de actualizar la aplicación. Gracias ## Most praised reviews (10 highest-rated) ### 5/5 — Great *2026-02-21, version 2.4* A lot of info in an easy to navigate way ### 5/5 — For everyday milwright work *2025-10-23, version 2.4* Im a service tech for an industrial consulting firm, use every day, very usefull and easy to use. can confirm avery torque i doubled checked were whitin 2% of calculation from our engineer ### 5/5 — Great reference *2025-04-21, version 2.4* I use this as my go to app. Very often. Thanks for the effort. Nice and simple easy to use. A+++ ### 5/5 — Machinist *2025-01-15, version 2.4* After retiring with 35 years as a machinist, I work on Harley’s and various other projects. This app is very handy to have on my phone. Saves so much time having the info I need readily at hand. ### 5/5 — Awesome app! *2025-01-14* This app is AWESOME, I’m a mechanical engineer and use this app all the time for anything fastener-related. I only wish this app was updated to better utilize larger, more modern phone displays. I have looked for a different more modern app to replace this one, and I’m convinced that one doesn’t exist. ### 5/5 — Excellent App *2023-12-10* Excellent app. I use it daily on the Shop Floor. The $1.99 upgrade for the metric information is well worth it. If you work in Maintenance or the Machine Shop I highly recommend it. It’s a lot easier than digging that reference book out of your toolbox or going to the chart on the wall. ### 5/5 — Very useful *2023-10-23, version 2.4* Thank you, I really enjoy this app 😄 ### 5/5 — Works as advertised *2022-10-28* I use it a lot to see if things are in a ball park of right torque. Pretty helpful with automotive stuff too. A lot of people are complaining that the app doesn’t have a lot of extra functions but it works as advertised. ### 5/5 — It is worth it, every penny *2022-10-05, version 2.4* I use this app almost everyday at work. It has been the perfect reference for countless confusing situations. If you do FEA or CAD, you NEED this app. ### 5/5 — Great App for a hobbyist *2022-08-09* I’m a hobbyist who machines and fabricates for my own projects. This app is very handy for me. It saves me from looking up screw dimensions in handbooks and walking to where I keep a drill chart. I do wish it had a tap drill table, that’d save me even more time. I read a review which mentioned tensile strength of some fasteners being different than other references. I haven’t compared those in the app to other references. I only use the dimensions and haven’t, so far, found any discrepancies. Good eye to the reviewer who caught those. --- *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 2026-07-31.*