---
title: "iEngineer - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "iEngineer is the most comprehensive database of screw/bolt information that you can find anywhere.  US screws: -93 different screws from #0 to 4” -Dimensions for 9 standard head styles -74 material gr"
---

# iEngineer — United States

![iEngineer App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple128/v4/27/b0/26/27b026b6-a8ec-8d4d-51f1-4b7dcb3d7431/AppIcon-1x_U007emarketing-0-0-GLES2_U002c0-512MB-sRGB-0-0-0-85-220-0-0-0-3.png/400x400bb.png)

**Developer:** [Perfectly Simple Apps](https://apptail.io/developer/perfectly-simple-apps-wCp)
**Category:** Reference
**Rating:** 4.6/5 (196 ratings)
**Price:** Free
**Bundle ID:** com.perfectlysimpleapps.screwinformationdatabaselite
**Store:** Apple App Store
**Country:** United States
**Version:** 2.4 (released 2017-09-22)
**Original Release:** 2010-05-04

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id369825047)
**AppTail Page:** [https://apptail.io/app/iengineer-lkhe/united-states](https://apptail.io/app/iengineer-lkhe/united-states)

## iEngineer Description
iEngineer is the most comprehensive database of screw/bolt information that you can find anywhere.

US screws:
-93 different screws from #0 to 4”
-Dimensions for 9 standard head styles
-74 material grades including SAE, ASTM, and other materials

Metric Screws (available as in-app purchase):
-210 different metric screws from M1.0 to M100
-Dimensions for 10 standard head styles for ISO, DIN, BS, and ANSI standards where available
-86 material grades including 12 additional metric grades, SAE, ASTM, and other materials

Displayed values for both the US and Metric screws include:
-Standard dimensions
-Tap sizes
-Clearance hole sizes
-Material strength
-Recommended torque values
-Clamp force
-Shear force
-Head markings display
-3D model of head type
-Standard dimensions of head type

Other features:
-Drill chart with 523 drill bit sizes
-Fraction chart
-Copy and paste data values
-Fast and easy unit conversion
-Ability to show/hide material grades in the interface so you only see what is relevant to you

If you have any questions please contact us at support@perfectlysimpleapps.com

## iEngineer Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple128/v4/f0/cf/cd/f0cfcddd-020d-0a15-08d0-7f74ecaad5f3/pr_source.png/1536x2048.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple128/v4/9e/48/72/9e487218-6823-0cfe-6803-efd643d3851f/pr_source.png/1536x2048.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple128/v4/d9/81/c2/d981c281-6be9-b967-ee00-cfd2cd781822/pr_source.png/1536x2048.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/Purple118/v4/e2/cf/83/e2cf8358-e45d-b7d1-21fb-704091452bda/pr_source.png/1536x2048.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/Purple118/v4/04/02/8d/04028d29-7a6e-965a-8fba-e4cd41da4b41/pr_source.png/2048x1536.png)

## iEngineer Rating Breakdown in United States
- 5 stars: 147 (75%)
- 4 stars: 29 (15%)
- 3 stars: 8 (4%)
- 2 stars: 5 (3%)
- 1 stars: 7 (4%)

## iEngineer Reviews in United States

### *---- "Communists"
Have to pay for commie sizes. What has this world come to. Money hungry pedophiles
-- Dez nutz 1357, 2024-05-05

### ***** "Excellent App"
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.
-- Plas62, 2023-12-10

### ****- "Additional Feature Suggestions"
Nice application.  Please add tap drill chart and clearance hole fits.
-- neatmachine, 2023-05-25

### ***** "Works as advertised"
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.
-- respected Rhino, 2022-10-28

### ***** "It is worth it, every penny"
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.
-- Huntsville Engineer, 2022-10-05

### ***** "Great App for a hobbyist"
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.
-- Sniper Motorsports, 2022-08-09

### ****- "Great useful app with some small errors"
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.
-- GillesV27, 2022-05-26

### ****- "Great app"
Love the app. It’s very complete but needs pipe threads added.
-- JSwoape, 2021-11-13

### ***** "A must for fabricators or maintenance techs!"
Love this app!  Quick and easy to use with all the information you need in one place. Great tech support also.
-- Herostaff, 2021-06-15

### ***** "Great app"
Great reference, valuable information.  Thank you.
-- Innoveight, 2021-04-15

[View all iEngineer reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)

## iEngineer In-App Purchases
| Item | Price |
|------|-------|
| Metric Screws | $1.99 |



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## iEngineer Available In
- [United States](https://apptail.io/app/iengineer-lkhe/united-states)
- [Canada](https://apptail.io/app/iengineer-lkhe/canada)
- [Australia](https://apptail.io/app/iengineer-lkhe/australia)
- [Mexico](https://apptail.io/app/iengineer-lkhe/mexico)
- [United Kingdom](https://apptail.io/app/iengineer-lkhe/united-kingdom)
- [Italy](https://apptail.io/app/iengineer-lkhe/italy)
- [Thailand](https://apptail.io/app/iengineer-lkhe/thailand)
- [Spain](https://apptail.io/app/iengineer-lkhe/spain)
- [Sweden](https://apptail.io/app/iengineer-lkhe/sweden)
- [South Africa](https://apptail.io/app/iengineer-lkhe/south-africa)
- [Russia](https://apptail.io/app/iengineer-lkhe/russia)
- [China](https://apptail.io/app/iengineer-lkhe/china)
- [Colombia](https://apptail.io/app/iengineer-lkhe/colombia)
- [Hong Kong SAR China](https://apptail.io/app/iengineer-lkhe/hong-kong)
- [Netherlands](https://apptail.io/app/iengineer-lkhe/netherlands)
- [Norway](https://apptail.io/app/iengineer-lkhe/norway)
- [Greece](https://apptail.io/app/iengineer-lkhe/greece)
- [Ecuador](https://apptail.io/app/iengineer-lkhe/ecuador)
- [New Zealand](https://apptail.io/app/iengineer-lkhe/new-zealand)
- [Philippines](https://apptail.io/app/iengineer-lkhe/philippines)
- [France](https://apptail.io/app/iengineer-lkhe/france)
- [Saudi Arabia](https://apptail.io/app/iengineer-lkhe/saudi-arabia)
- [Singapore](https://apptail.io/app/iengineer-lkhe/singapore)
- [Türkiye](https://apptail.io/app/iengineer-lkhe/turkey)
- [Ukraine](https://apptail.io/app/iengineer-lkhe/ukraine)
- [Indonesia](https://apptail.io/app/iengineer-lkhe/indonesia)
- [Ireland](https://apptail.io/app/iengineer-lkhe/ireland)
- [Israel](https://apptail.io/app/iengineer-lkhe/israel)
- [India](https://apptail.io/app/iengineer-lkhe/india)
- [South Korea](https://apptail.io/app/iengineer-lkhe/south-korea)
- [Denmark](https://apptail.io/app/iengineer-lkhe/denmark)
- [Chile](https://apptail.io/app/iengineer-lkhe/chile)
- [Nigeria](https://apptail.io/app/iengineer-lkhe/nigeria)
- [Azerbaijan](https://apptail.io/app/iengineer-lkhe/azerbaijan)
- [Belgium](https://apptail.io/app/iengineer-lkhe/belgium)
- [Bulgaria](https://apptail.io/app/iengineer-lkhe/bulgaria)
- [Bahrain](https://apptail.io/app/iengineer-lkhe/bahrain)
- [Dominican Republic](https://apptail.io/app/iengineer-lkhe/dominican-republic)
- [Algeria](https://apptail.io/app/iengineer-lkhe/algeria)
- [Egypt](https://apptail.io/app/iengineer-lkhe/egypt)
- [Finland](https://apptail.io/app/iengineer-lkhe/finland)
- [Hungary](https://apptail.io/app/iengineer-lkhe/hungary)
- [Kuwait](https://apptail.io/app/iengineer-lkhe/kuwait)
- [Cayman Islands](https://apptail.io/app/iengineer-lkhe/cayman-islands)
- [Lebanon](https://apptail.io/app/iengineer-lkhe/lebanon)
- [Lithuania](https://apptail.io/app/iengineer-lkhe/lithuania)
- [Luxembourg](https://apptail.io/app/iengineer-lkhe/luxembourg)
- [Argentina](https://apptail.io/app/iengineer-lkhe/argentina)
- [Peru](https://apptail.io/app/iengineer-lkhe/peru)
- [Poland](https://apptail.io/app/iengineer-lkhe/poland)
- [Romania](https://apptail.io/app/iengineer-lkhe/romania)
- [Slovenia](https://apptail.io/app/iengineer-lkhe/slovenia)
- [Tunisia](https://apptail.io/app/iengineer-lkhe/tunisia)
- [Venezuela](https://apptail.io/app/iengineer-lkhe/venezuela)
- [Vietnam](https://apptail.io/app/iengineer-lkhe/vietnam)
- [Latvia](https://apptail.io/app/iengineer-lkhe/latvia)

---

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