Comparison

Ariel Torque Guide vs Cat® SIS2GO

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

Head to head
About

Ariel Torque Guide

This app provides quick access to fastener torques and clearances for Ariel compressors, serving as an electronic companion to engineering reference documents. It allows users to find specific values based on compressor model, fastener location, and part numbers, even without an internet connection.

Highlights
  • Determine fastener torques and clearances
  • Access data offline
  • Filter by compressor model, location, and type
  • Find clearance values by part number
  • Access customer support information
  • Link to technical documentation
Features
Read full description

Acting as an electronic companion to Ariel’s Engineering Reference Torque documents, the Ariel Torque Guide allows you to quickly and conveniently determine the proper fastener torques and clearances for your Ariel compressor. Torque and clearance values within the app can be accessed without cellular service or Wi-Fi, giving you access to comprehensive Ariel information and support anytime, anywhere. The Ariel Torque Guide allows you to: • Find torque values and clearance values based on your compressor model, fastener location, and fastener type for the compressor you are working on • Find clearance values for piston rings, rider rings, and wearband based on part numbers • Access torque values while working in remote locations • Easily access Ariel Customer Support information • Conveniently link to technical support documentation on the Ariel website • Automatically update when connected to Wi-Fi or cellular data

About

Cat® SIS2GO

Access essential manuals and order parts for your Cat equipment. A subscription unlocks detailed service information, including troubleshooting guides and repair procedures, even offline.

Highlights
  • Operation and Maintenance Manuals
  • Parts Manuals
  • Parts identification and ordering
  • Service Manual information
  • Troubleshooting guides
  • Repair procedures
  • Schematics
Features
Read full description

The Cat® SIS2GO app helps you maintain, troubleshoot, and repair your Cat equipment. Two levels of SIS2GO access are available: • Cat Operation and Maintenance Manuals, Parts Manuals, and the ability to identify, verify and seamlessly order Cat parts from independent Cat dealers are available to all users at no charge. • An affordable monthly or annual subscription (offered by Caterpillar) gives access to comprehensive Cat Service Manual information. The subscription provides troubleshooting guides, step-by-step repair procedures, tooling information, hydraulic and electrical schematics, and more. Access to service manual information in SIS2GO is included with a SIS 2.0 subscription (offered by Cat dealers). Optimized for mobile devices, SIS2GO offers a simple, intuitive, and efficient user interface to access Service, Parts, and Operation and Maintenance Manual information. SIS2GO downloaded content is accessible whether you’re connected or not, so you can rely on SIS2GO even when working on the most remote job site. And for any purchases, following is the terms Payment will be charged to iTunes Account at confirmation of purchase. The subscription automatically renews unless auto-renew is turned off at-least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period. You may manage your subscription and turn off auto-renewal by going to your Account Settings after purchase. For additional information, please read our Privacy Policy & EULA - https://www.cat.com/en_US/support/maintenance/sis2go-app/legal-terms-and-conditions.html Supported Languages: English (English), Français (French), Deutsch (German), Bahasa Indonesia (Indonesian), Italiano (Italian), Português (Portuguese), 简体中文 (Simplified Chinese), Español (Spanish), 日本語 (Japanese), русский (Russian)

Screenshots

Ariel Torque Guide4 screens
Cat® SIS2GO4 screens

Verdict

The call

The clearest difference is review sentiment: Ariel Torque Guide at 100% against Cat® SIS2GO's 11%. Ariel Torque Guide also leads on rating (4.8 vs 2.2) and in-app purchases (none vs 27). Cat® SIS2GO's advantage is ratings volume (94 vs 9). On price, update cadence, ads and device support 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. Cat® SIS2GO sells 27 in-app purchases, starting at $0.99 per month. Ariel Torque Guide asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Ariel Torque Guide holds the better App Store score, 4.8 against 2.2. That said, the two scores are not equally well evidenced: Cat® SIS2GO has 94 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 100% of Ariel Torque Guide's written reviews are positive against 11% of Cat® SIS2GO's.

UpkeepUpdate frequency

Ariel Torque Guide ships an update every 2 months, Cat® SIS2GO every 6 weeks. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

Scorecard5 real differences · 5 level
Ariel Torque Guide versus Cat® SIS2GO: the parameters behind the verdict, then further details
ParameterAriel Torque GuideCat® SIS2GO
PriceFreeFree
Rating4.8 (9 ratings) — better2.2 (94 ratings)
Positive reviews100.0% of reviews — better10.8% of reviews
Number of ratings994 — better
Update frequencyEvery 2 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better16.0
Further details — not scored
Size52 MB195 MB
Age rating4+4+
DeveloperAriel CorporationCaterpillar Inc.

Customer experience

Ariel Torque Guide

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Cat® SIS2GO

All ratings94 ratings
Positive27.7%
Neutral2.1%
Negative70.2%
Written reviews74 reviews
Positive10.8%
Neutral0.0%
Negative89.2%

Bugs and requests

Ariel Torque Guide

Not enough reviews yet to summarise bugs or requests.

Cat® SIS2GO

Reported bugs

13 issues
  • App stuck on SIS2GO logo splash screen
  • Login credentials not recognized despite valid accounts
  • Endless login loop after authentication
  • White screen crashes during operation
  • Downloads freeze and fail to complete
Show 8 more
  • App crashes when accessing specific machine information
  • Incompatibility with iOS 17+ and M1 MacBook Air
  • Account creation failures
  • App won't open or load on iPhone and iPad
  • Crashes after recent Apple OS updates
  • Files refuse to download on any network connection
  • Inability to access previously downloaded machines
  • Cookie acceptance loop causing repeated login screens

Requested features

6 requests
  • Improve QR code scanner functionality
  • Better image quality and zoom capability for diagrams
  • Complete offline access to downloaded manuals
  • Accurate parts labeling and organization
  • Support for more machine models and serial numbers
Show 1 more
  • Subscription model transparency and clarity

In-app purchases

None

Ariel Torque Guide

No in-app purchases

27 purchases

Cat® SIS2GO

Subscriptions27
  • Retail Limited Monthly 1$0.991 Month
  • Retail Limited1 monthly$0.991 Month
  • Retail Limited Yearly 1$1.991 Year
Show 24 more
  • Limited Retail1 Yearly$1.991 Year
  • SIS2GO Subscription 1 Monthly$14.991 Month
  • SIS2GO Subscription 2 Monthly$14.991 Month
  • SIS2GO Subscription 3 Monthly$14.991 Month
  • SIS2GO Subscription 4 Monthly$14.991 Month
  • Retail Exp Product 8 Monthly$14.991 Month
  • Retail Exp Product 10 Monthly$14.991 Month
  • SIS2GO Subscription 13 Monthly$14.991 Month
  • SIS2GO Subscription 10 Monthly$14.991 Month
  • SIS2GO Subscription 12 Monthly$14.991 Month
  • SIS2GO Subscription 9 Monthly$14.991 Month
  • SIS2GO Subscription 6 Monthly$14.991 Month
  • SIS2GO Subscription 8 Monthly$14.991 Month
  • SIS2GO Subscription 7 Monthly$14.991 Month
  • SIS2GO Subscription 5 Monthly$14.991 Month
  • SIS2GO Subscription 1 Yearly$149.991 Year
  • SIS2GO Subscription 2 Yearly$149.991 Year
  • SIS2GO Subscription 3 Yearly$149.991 Year
  • Retail Exp Product 10 Yearly$149.991 Year
  • Retail Exp Product 8 Yearly$149.991 Year
  • Retail Exp Product 9 Yearly$149.991 Year
  • SIS2GO Subscription 6 Yearly$149.991 Year
  • SIS2GO Subscription 4 Yearly$149.991 Year
  • SIS2GO Subscription 5 Yearly$149.991 Year

Questions

Is Ariel Torque Guide free?
Ariel Torque Guide is free to download, with no in-app purchases.
Is Cat® SIS2GO free?
Cat® SIS2GO is free to download, with in-app purchases available.
Which has better reviews, Ariel Torque Guide or Cat® SIS2GO?
Ariel Torque Guide is rated higher. Ariel Torque Guide averages 4.8 out of 5 from 9 ratings, while Cat® SIS2GO averages 2.2 from 94 ratings.
Do Ariel Torque Guide or Cat® SIS2GO have ads?
Neither Ariel Torque Guide nor Cat® SIS2GO shows ads.
Which is updated more often, Ariel Torque Guide or Cat® SIS2GO?
Ariel Torque Guide ships an update every 2 months, and Cat® SIS2GO every 6 weeks. Most recently, Ariel Torque Guide was updated on October 24, 2026 and Cat® SIS2GO on October 27, 2026.

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