# iAlignCalc vs Machine Train Alignment

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.

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

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.

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.

## The numbers

| Metric | iAlignCalc | Machine Train Alignment |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/ialigncalc/id441151338/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/machine-train-alignment/id6742226565/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 10 months |
| Monetization | Free | Free |
| Size | 5 MB | 124 MB |
| Requires iOS | **7.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Motionics LLC](https://appshunter.io/developer/424498959) | [ACOEM Group](https://appshunter.io/developer/1495816959) |

## What reviewers say

### iAlignCalc

[App page](https://appshunter.io/ios/app/ialigncalc/id441151338)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Machine Train Alignment

[App page](https://appshunter.io/ios/app/machine-train-alignment/id6742226565)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*