Comparison

iAlignCalc vs Machine Train Alignment

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

iAlignCalc

This app calculates machine shaft alignment corrections using multiple methods, including two inverted dial, face-rim, and double radial. It also calculates thermal growth and supports angular, parallel, and combined misalignments. Advanced features include PDF report generation with signatures, sketches, audio, and image attachments.

Highlights
  • 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
Features
Read full description

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.

About

Machine Train Alignment

This app guides users through machine train shaft alignment using Bluetooth-connected sensors. It offers an adaptive interface and a VertiZontal™ feature for simultaneous vertical and horizontal adjustments. Generate instant PDF reports for on-site documentation.

Highlights
  • Bluetooth connectivity
  • Adaptive user interface
  • VertiZontal™ adjustment
  • Instant PDF reporting
  • Guided measurement process
Features
Read full description

This is a companion app for performing shaft alignment, using the RT 300/AT400/AT300 on machine train applications. The app guides the user throughout the complete measurement and alignment process when using the Bluetooth® connected ACOEM sensors. The PDF Report function provides a fast on-site reporting capability by converting saved measurement reports into PDF files. ---- Note: This app works only with the ACOEM RT-300, AT400/AT-300 ---- Key Features: - Connected using Bluetooth® - GuideU: Our patented icon-based and color-coded adaptive user interface - VertiZontal™: adjust the machine both vertically and horizontally without re-measuring - Create an instant PDF-report Visit the website www.acoem.com for more information on alignment in general, the ACOEM tools and support of the app.

Screenshots

iAlignCalc4 screens
Machine Train Alignment4 screens

Verdict

The call

The clearest difference is update cadence: iAlignCalc at every 4 months against Machine Train Alignment's every 10 months. iAlignCalc also leads on iOS requirement (7.0 vs 13.0). On price, rating, ratings volume and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for iAlignCalc against 5.0 for Machine Train Alignment. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

UpkeepUpdate frequency

iAlignCalc ships an update every 4 months, Machine Train Alignment every 10 months. The most recent releases landed on September 22, 2026 and September 17, 2026 respectively.

Scorecard2 real differences · 8 level
iAlignCalc versus Machine Train Alignment: the parameters behind the verdict, then further details
ParameteriAlignCalcMachine Train Alignment
PriceFreeFree
Rating5.0 (2 ratings)5.0 (1 ratings)
Positive reviews83.3% of reviews—
Number of ratings2 — better1
Update frequencyEvery 4 months — betterEvery 10 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS7.0 — better13.0
Further details — not scored
Size5 MB124 MB
Age rating4+4+
DeveloperMotionics LLCACOEM Group

Customer experience

iAlignCalc

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive83.3%
Neutral16.7%
Negative0.0%

Machine Train Alignment

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

iAlignCalc

No in-app purchases

None

Machine Train Alignment

No in-app purchases

Questions

Is iAlignCalc free?
iAlignCalc is free to download, with no in-app purchases.
Is Machine Train Alignment free?
Machine Train Alignment is free to download, with no in-app purchases.
Which has better reviews, iAlignCalc or Machine Train Alignment?
iAlignCalc and Machine Train Alignment are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.
Do iAlignCalc or Machine Train Alignment have ads?
Neither iAlignCalc nor Machine Train Alignment shows ads.
Which is updated more often, iAlignCalc or Machine Train Alignment?
iAlignCalc ships an update every 4 months, and Machine Train Alignment every 10 months. Most recently, iAlignCalc was updated on September 22, 2026 and Machine Train Alignment on September 17, 2026.

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