iAlignTest vs iAlignShaft
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
iAlignTest
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An interactive reference tool for machine shaft alignment. It provides the common reference tables, specifications and charts for shaft alignment tolerance. Three main standards are included: 1- NASA Precision Alignment Specs (Ames Policy Directive APD 8830.1) 1.a) Alignment Tolerance for Soft Foot 1.b) Alignment Tolerance for Short Coupling: Horizontal and Angular 1.c) Alignment Tolerance for couplings with spacers 2- Common Tolerance Table with the RPM input for Angular, Parallel, and Spacer Shaft cases User selects the RPM range, enters alignment values and sees the alignment condition and tolerance range for the machine. 3- Interactive Alignment Tolerance Chart with three regions: Excellent, Acceptable, and Unacceptable. User enters RPM, offset and angles in both horizontal and vertical directions, and interactively sees the condition of the machine in the chart Features: - Shaft Alignment Specification: NASA Standard - Interactive Shaft Alignment Tolerance Table - Interactive Shaft Alignment Tolerance Chart in mm and inch - Email the results DISCLAIMER: iAlignTest is intended for educational purposes. Although the references in this App are made with great care, however it may contain errors and inaccuracies. Using the results of this App is the responsibility of the user.
iAlignShaft
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iShaftAlign is a simple and user-friendly application that has been designed to help you in aligning equipment shafts. The process of ensuring that two shafts are colinear is a very important step in maintenance. iShaftAlign makes this process easy with the help of simple with a dial gauge. This simple app can be used with machines rotating at a maximum speed of 3000rpm. The application guides the user about the corrections that need to be made at each step to ensure the final alignment is within tolerance.
Screenshots
Verdict
The clearest difference is price: iAlignTest at Free against iAlignShaft's $2.99. iAlignShaft's advantage is update cadence (every 11 months vs every 32 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
iAlignTest is free to download; iAlignShaft costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
iAlignTest ships an update every 32 months, iAlignShaft every 11 months. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.
| Parameter | iAlignTest | iAlignShaft |
|---|---|---|
| Price | Free โ better | $2.99 |
| Update frequency | Every 32 months | Every 11 months โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod โ better | iPhone |
| Requires iOS | 15.0 โ better | 16.2 |
| Further details โ not scored | ||
| Size | 8 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Motionics LLC | Hans Babylone |
In-app purchases
iAlignTest
No in-app purchases
iAlignShaft
No in-app purchases
Questions
Is iAlignTest free?
Is iAlignShaft free?
Do iAlignTest or iAlignShaft have ads?
Which is updated more often, iAlignTest or iAlignShaft?
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