Comparison

CATService vs Horizontal Shaft Alignment

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

Head to head
About

CATService

Features
Read full description

This app requires external measurement hardware to operate. This app is a custom-made app for Caterpillar to conduct engine vibration test and crankshaft deflection test. The vibration test function connects iPad to the Data Acquisition Box and collects in real time the Overall RMS Vibration (Acceleration, Velocity and Displacement). Real time vibration spectrum is also displayed. The crankshaft deflection test function works with Motionics wireless measurement read (WiMER). When the sensor is attached and connected, users can wirelessly capture sensor readings at 5 testing positions on crankshaft via Bluetooth Low Energy. Crank web vertical and horizontal deflections are automatically calculated once 5 readings are collected. Testing report is generated after each test. It also enables importing and merging PDF reports created by other Apps. User can easily get access to saved reports via a report manager. FEATURES: Vibration Test: - Real-Time Overall RMS values - Vibration Signal Spectrum/Waveform - Vibration in Velocity (ips or mm/s) or Acceleration (G's) - User can select from different industrial severity standards - User can define customized alarm and danger values - Signal Averaging option Crankshaft Deflection Test: - Wireless sensor connectivity - Test information editing - Sensor measuring crankshaft rotating angle and indicator showing test positions - Crankshaft end play test included - Auto calculating vertical and horizontal deflections Report Generation: - Test report generation including engine information, measurement values, data plots, note, signature, location information - Email PDF report and wireless printing - Report manager available - Import and merge reports from other Apps

About

Horizontal Shaft Alignment

This app assists with horizontal shaft alignment for machinery like motors and pumps. It guides users through the measurement and alignment process using Bluetooth-connected sensors, offering features like Feetlock for challenging situations and instant PDF reporting.

Highlights
  • Bluetooth sensor connectivity
  • Guided measurement and alignment process
  • Feetlock function for base-bound machines
  • Instant PDF report generation
  • ACOEM Cloud integration for reporting and sharing
  • VertiZontal adjustment without re-measuring
Features
Read full description

This is a companion app for performing horizontal shaft alignment, using the RT 300/AT 200/AT 100, on typical applications such as a motor and a pump. The app guides the user throughout the complete measurement and alignment process when using the Bluetooth® connected ACOEM sensors. This offers an extensive shaft alignment package, including the Feetlock function that is useful in base/bolt-bound machine situations. The PDF Report function provides a fast on-site reporting capability by converting saved measurement reports into PDF files. Thanks to the ACOEM cloud instant reporting and instant sharing is easy. ---- Note: This app works only with the ACOEM RT-300 and AT-200 ---- 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 - Connect to the ACOEM Cloud (optional) Visit the website www.acoem.com for more information on alignment in general, the ACOEM tools and support of the app.

Screenshots

Horizontal Shaft Alignment4 screens

Verdict

The call

The clearest difference is price: Horizontal Shaft Alignment at Free against CATService's $450.00. Horizontal Shaft Alignment also leads on update cadence (every 4 months vs every 15 months) and device support (3 vs 1). On ads, in-app purchases and iOS requirement 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

Horizontal Shaft Alignment is free to download; CATService costs $450.00 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

CATService ships an update every 15 months, Horizontal Shaft Alignment every 4 months. The most recent releases landed on October 6, 2026 and October 17, 2026 respectively.

Scorecard3 real differences · 6 level
CATService versus Horizontal Shaft Alignment: the parameters behind the verdict, then further details
ParameterCATServiceHorizontal Shaft Alignment
Price$450.00Free — better
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyEvery 15 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPadiPhone, iPad, iPod — better
Requires iOS13.013.0
Further details — not scored
Size13 MB123 MB
Age rating4+4+
DeveloperMotionics LLCACOEM Group

In-app purchases

None

CATService

No in-app purchases

None

Horizontal Shaft Alignment

No in-app purchases

Questions

Is CATService free?
CATService costs $450.00, with no in-app purchases.
Is Horizontal Shaft Alignment free?
Horizontal Shaft Alignment is free to download, with no in-app purchases.
Do CATService or Horizontal Shaft Alignment have ads?
Neither CATService nor Horizontal Shaft Alignment shows ads.
Which is updated more often, CATService or Horizontal Shaft Alignment?
CATService ships an update every 15 months, and Horizontal Shaft Alignment every 4 months. Most recently, CATService was updated on October 6, 2026 and Horizontal Shaft Alignment on October 17, 2026.

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