# iAlignCalc

> Calculates machine shaft alignment corrections and thermal growth for various misalignments. (iPhone/iPad app by Motionics LLC.)

- Source: https://appshunter.io/ios/app/ialigncalc/id441151338 (this page in markdown: same URL + `.md`)
- Developer: [Motionics LLC](https://appshunter.io/developer/424498959)
- Category: Productivity, Utilities
- Price: Free
- Rating: 5.00/5 from 2 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 7.0 · 5 MB
- Languages: American English
- Released: 2011-06-07
- Data updated: 2026-08-26
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/ialigncalc/id441151338/reviews.md

## What is iAlignCalc?

iAlignCalc is an iPhone/iPad/iPod Touch application to calculate machine shaft alignment corrections. 
Features:
- Calculates machine shaft alignment corrections using the two inverted dial method.
- Calculates machine shaft alignment corrections using the face-rim method.
- Calculates machine shaft alignment corrections using the double radial method.
- Calculates thermal growth for different materials
- Can be used for angular, parallel, and combined misalignments

New Features in Version 1.2 for iPhone:
- Interactive Shaft Alignment Specification: NASA Standard
- Interactive Shaft Alignment Tolerance Table
- Interactive Shaft Alignment Tolerance Chart
- Report Generation

Report Features:
- PDF report output
- Include user signature
- Sketch pad to draw 
- Voice recording and audio attachment 
- Email PDF report
- Save the PDF file on disk to be accessed from computer
- Print the PDF to an Airprint
- Include the plant location and the map in the PDF
- Up to 5 image attachments from camera, library or screenshots of the alignment calculations
- Include text and notes
- Speech-to-text feature (Available in iPhone 4S only)

New Features in Version 1.3 for iPhone:
- Users can save the values and calculations for each alignment session and see them in a table based on the date, and name of the machine. Each saved session can be called and viewed later.  

Disclaimer:
iAlignCalc is intended for educational purposes. Although the calculations done by this application were made with great care, it may contain errors or inaccuracies. Using the results of the calculations is the responsibility of the user.

## Key features

- Two inverted dial method calculations
- Face-rim method calculations
- Double radial method calculations
- Thermal growth calculations
- PDF report generation
- Interactive tolerance tables and charts
- Save and recall alignment sessions

## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/ialigncalc/id441151338/reviews.md

### 5/5 — Work great on pump alignment

*2019-06-27*

Only thing I would change/add would be allowing the user to use there own coefficient for the amount of thermal growth per inch, instead of just selecting one of the generic materials and a spot to include bracket sag. The app works great

### 3/5 — Updates needed

*2015-03-28*

Needs updating for iOS 8. Freezes up. Works great for older iOS

### 5/5 — Union Millwright

*2013-02-14*

Works great and easy to use. Perfect for pre-alignments when a laser is really not necessary.

### 4/5 — Very nice

*2012-06-09*

Need to check the thermal growth calculations

### 5/5 — One of the most useful App I have ever downloaded!

*2012-03-21*

I regularly use this App in the field and it works like a charm

### 5/5 — Outstanding!!!

*2011-12-18*

I must retract my previous review.This app is a "must have" for anyone who does precision alignments on a regular basis. At first look the unit of measurment  was not familiar to me, but  with the quick response from customer support i realised that the "0.00" readings were in mills. 1.00 mills = 0.001 inch. Thanks for this app, well done!

## Frequently asked questions about iAlignCalc

### What alignment methods does iAlignCalc use?

iAlignCalc calculates machine shaft alignment corrections using the two inverted dial method, the face-rim method, and the double radial method. It can handle angular, parallel, and combined misalignments.

### Can iAlignCalc generate reports?

Yes, iAlignCalc can generate PDF reports that include user signatures, sketches, voice recordings, and up to 5 image attachments. Reports can also include plant location and maps, and can be emailed or printed via AirPrint.

### Does iAlignCalc support saving calculations?

Yes, users can save values and calculations for each alignment session, organized by date and machine name. These saved sessions can be recalled and viewed later.

### What are the interactive features in iAlignCalc?

Newer versions include an interactive Shaft Alignment Specification based on NASA standards, an interactive Shaft Alignment Tolerance Table, and an interactive Shaft Alignment Tolerance Chart.

### Is iAlignCalc available on Android devices?

Based on the provided data, iAlignCalc is an iPhone/iPad/iPod Touch application and is not listed as being supported on Android devices.

### How often is iAlignCalc updated?

The last update for iAlignCalc was on September 12, 2015, with the latest version being 1.5. This indicates a less frequent update schedule.

### What is the age rating for iAlignCalc?

iAlignCalc has an age rating of 4+, making it suitable for a wide range of users.

### Does iAlignCalc have ads?

No, the application data indicates that iAlignCalc does not have advertisements.

## Version history (last 5 releases)

### 1.5 — 2015-09-12

This app has been updated by Apple to display the Apple Watch app icon.

- Added Support for iPhone 4'' screen and bigger
- Fixed Device Rotation Issue
- Fixed Map and GPS
- Other Minor Improvements

### 1.4 — 2012-12-11

- Minor crash fixed

### 1.3 — 2012-11-27

- crash fix in the Report 
- New feature for iPhone:
to save the data of each session, see them in a table and retrieve them later.

### 1.21 — 2012-06-29

- Advanced thermal growth calculator with machine correction

### 1.2 — 2012-06-09

New features for iPhone:
- Interactive Shaft Alignment Specification: NASA Standard
- Interactive Shaft Alignment Tolerance Table
- Interactive Shaft Alignment Tolerance Chart
- Report Generation

Report Features:
- PDF report output
- Include user signature
- Sketch pad to draw 
- Voice recording and audio attachment 
- Email PDF report
- Save the PDF file on disk to be accessed from computer
-  Print the PDF to an Airprint
- Include the plant location and the map in the PDF
-  Up to 5 image attachments from camera, library or screenshots of the alignment calculations
- Include text and notes
- Speech-to-text feature (Available in iPhone 4S only)

## Apps similar to iAlignCalc

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Pre-Alignment](https://appshunter.io/ios/app/pre-alignment/id1499479273) | 5.0 (1) | Free | Productivity |
| [iAlignShaft](https://appshunter.io/ios/app/ialignshaft/id1561514816) | — | $2.99 | Productivity |
| [Vertical Shaft Alignment](https://appshunter.io/ios/app/vertical-shaft-alignment/id1499478849) | 5.0 (1) | Free | Productivity |
| [Machine Train Alignment](https://appshunter.io/ios/app/machine-train-alignment/id6742226565) | 5.0 (1) | Free | Productivity |
| [Easy-Laser XT Alignment](https://appshunter.io/ios/app/easy-laser-xt-alignment/id1146769968) | 3.9 (19) | Free | Productivity |
| [Horizontal Shaft Alignment](https://appshunter.io/ios/app/horizontal-shaft-alignment/id1499322319) | 5.0 (2) | Free | Productivity |

## More apps by Motionics LLC

- [iWindTurbine](https://appshunter.io/ios/app/iwindturbine/id424498956)
- [iRotorBalance](https://appshunter.io/ios/app/irotorbalance/id430978753)
- [VibraUnits](https://appshunter.io/ios/app/vibraunits/id445231670)
- [REBvibe](https://appshunter.io/ios/app/rebvibe/id445515440)
- [VibeSpectra](https://appshunter.io/ios/app/vibespectra/id448014799)

All apps by Motionics LLC: https://appshunter.io/developer/424498959

## Related topics

[shaft alignment](https://appshunter.io/ios/topics/shaft-alignment)

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*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 2026-08-26.*