# RD Align

> Machinery alignment calculation and graphical solution tool for mechanics. (iPhone/iPad app by D&M App Company LLC.)

- Source: https://appshunter.io/ios/app/rd-align/id957195550 (this page in markdown: same URL + `.md`)
- Developer: [D&M App Company LLC](https://appshunter.io/developer/957195549)
- Category: Productivity
- Price: $9.99
- Rating: 5.00/5 from 4 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 16 MB
- Languages: English
- Released: 2015-02-04
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/rd-align/id957195550/reviews.md

## What is RD Align?

Expensive laser alignment systems are NOT needed to obtain a precision alignment of a machine set!

Although a laser alignment systems can measure very precisely, the smallest a move a mechanic can make is 0.001" (0.025mm). 

The biggest complaint from mechanics using a reverse dial indicator set is performing the graphical solution to determine the required machine moves.

Misaligned machines are responsible for 50%-70% of machine vibration which significantly shortens machine life, increases cost of maintenance, increases of electrical cost, and lowers product quality.

RD Align is a PREMIER ALIGNMENT SYSTEM when combined with a reverse dial indicator set such as the Proaction Alignment System. For less than $1500, equal or better alignments can be achieved in the same amount of time.

RD Align will illustrate the graphical solution and calculate the required machine move. The graphical solution provides the mechanic a visualization of the machine set in the measured state.

Intuitive interface guides the user through the alignment process.
Step 1: Enter the machine set dimensions.

Step 2: Enter each machines running and stopped temperatures for thermal growth compensated alignment solutions in the vertical direction. Machine will start out misaligned and "grow" into alignment. (Optional)

Step 3: Enter vertical alignment dial positions to calculate and view the vertical alignment solution. Select 4 optional alignment solutions.

Step 4: Enter horizontal alignment dial positions to calculate and view the horizontal alignment solution. View the entire machine train to visual whole system. Select 4 optional alignment solutions.

Program user guide included in the App or can be downloaded from our website.

## Key features

- Graphical solution illustration
- Calculates required machine moves
- Thermal growth compensation
- Intuitive step-by-step guidance
- Vertical and horizontal alignment solutions
- View entire machine train

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/rd-align/id957195550/reviews.md

### 5/5 — A millwright’s dream come true!!!

*2017-10-18, version 2.2*

Finally an excellent, well documented, easy to use and understand app to do reverse alignment. Why purchase a laser when you can use dial indicators at one tenth the cost and have this app handle the math. Thermal growth?  This program handles it as well. We purchase a copy for each of our students at our hands-on training center.  The author could price it at a much higher price and we’d still buy it. At $4.99 its a steal. Wait till you see it help you figure your way around a bolt bound situation in the field. Not just one solution but four. The directions for use are clear and obvious written by a guy who knows shaft alignment from a field perspective. Thomas B.Davis Mechanical Engineer. Maintenance Troubleshooting. 10/18/2017

## Frequently asked questions about RD Align

### What is RD Align used for?

RD Align is a premier alignment system that helps mechanics perform precision alignment of machinery. It illustrates graphical solutions and calculates the necessary machine moves, offering an alternative to expensive laser systems.

### How does RD Align help with thermal growth?

RD Align allows users to enter the machine's running and stopped temperatures. This data is used to calculate compensated alignment solutions in the vertical direction, accounting for how the machine will 'grow' into alignment when running.

### What are the system requirements for RD Align?

RD Align is available for iPhone and iPod. It was last updated on July 2, 2024, with version 3.7.

### How much does RD Align cost?

RD Align is a paid application, priced at $9.99. There are no in-app purchases or advertisements.

### Is RD Align suitable for beginners?

Yes, RD Align features an intuitive interface that guides users through the alignment process step-by-step, making it accessible for mechanics of varying experience levels.

### Can RD Align show the entire machine setup?

Yes, RD Align allows you to view the entire machine train. This provides a visualization of the whole system, helping users understand the overall alignment status.

### What kind of user feedback does RD Align have?

RD Align has received positive feedback, indicated by a rating of 5.0 stars from 4 ratings. This suggests a high level of user satisfaction with the app's functionality.

### Does RD Align have ads?

No, RD Align is ad-free. The application does not contain any advertisements, ensuring an uninterrupted user experience.

## Version history (last 5 releases)

### 3.7 — 2024-07-02

Updated for iOS 17

### 3.6 — 2022-03-12

Update for iOS 15
Bug fixes

### 3.5 — 2021-12-20

Disabled dark mode support.

### 3.4 — 2021-05-16

Updates for iOS 14
Format updates

### 3.3 — 2019-08-18

Updates for iOS 12.4
Format updates

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## More apps by D&M App Company LLC

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All apps by D&M App Company LLC: https://appshunter.io/developer/957195549

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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 2026-06-10.*