Ariel Quick Size vs SKF Soft foot
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ariel Quick Size
This utility app helps users estimate compressor configurations based on input pressures and flow requirements. It calculates needed horsepower or flow, suggests frame and cylinder configurations, and estimates stages, bore sizes, and discharge temperatures. Results can be emailed for further review.
- Horsepower or gas flow estimate
- Compressor frame and cylinder configuration
- Estimate required stages and bore sizes
- Input gas specific gravity
- English or Metric units
- Email results
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Ariel Compression sized quickly! Download Ariel Quick Size to unleash logic that brings your compression need into focus. Ariel Quick Size calculator functions as an electronic horsepower wheel and date finder with enhanced features and productivity. Find which Ariel frame and cylinders will get you where you need to be. Simply input your suction and discharge pressures and flow requirements into Ariel Quick Size to get an estimate on needed horsepower or flow (based on user preference.) Next, estimate an Ariel compressor configuration that fits your needs. Ariel Quick Size estimates the required stages, bore sizes, discharge temperatures, and rod loads needed for your specific application. Ariel Quick Size captures this information – allowing you to e-mail your results to Ariel or yourself for further review. Results and Features: · At-a-glance Basic Frame Data (replacing the Ariel Data Cards) · Target Horsepower or Gas Flow Estimate · Compressor Frame and Cylinder Configuration · Input Gas Specific Gravity · Work in either English or Metric units · E-mail the preliminary selection to yourself, Ariel, or others from Ariel Quick Size
SKF Soft foot
This utility app, when paired with specific hardware, helps identify and correct soft foot issues in machinery. It offers a demonstration mode for experiencing the process before hardware purchase, along with automated reports and instructional videos.
- Soft foot identification and correction
- Wireless Bluetooth communication
- Demonstration mode for trial
- Automatic measurement reports
- Explanatory videos and 3D animations
- Machine library with QR code scanner
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The Soft foot app is designed to be used with the SKF Shaft Alignment Tool TKSA 51 and TKSA 71. Together, the hardware and the app form an alignment system that allows soft foot identification and corrections to be made in an intuitive and easy way. The system uses line laser to PSD technology that enables highly accurate and reliable soft foot measurements. The hardware and the Soft foot app communicate wirelessly via Bluetooth®. Without the hardware the app can nonetheless be used, as it features a fully functional demonstration mode allowing the complete soft foot process to be experienced before purchasing the TKSA 51 or TKSA 71 instrument. KEY FEATURES: • Very easy-to-use – The Soft foot app focuses on making the soft foot detection as easy as possible and enables accurate soft foot corrections. • Demonstration mode – The Soft foot app offers a fully functional demonstration mode allowing the complete soft foot adjustment process to be experienced before the purchase of a TKSA 51 or TKSA 71. • Automatic measurement report – Automatically generated measurement reports give a complete overview of the soft foot process and results. The reports can be customised with additional notes, a machine picture, a signature and can easily be shared via email or cloud services. • Explanatory videos – Easy to follow videos demonstrating how to set up and perform accurate measurements. • 3D Animations – 3D animations guide the user through the measurement process, allowing accurate soft foot measurement to be performed in a very easy way. • Machine library and QR code scanner – Helps keeping track of the machines that have been measured. Machine information like distances, the machine picture, and other details are saved for each machine and can be reused the next time the same machine is measured. QR codes can be scanned to identify a machine and quickly retrieve its details. The library can also be used for easy access to all the reports generated for each machine in one place. HARDWARE – SKF Shaft Alignment Tool TKSA 51 and TKSA 71: The SKF TKSA 51 and TKSA 71 systems use a pair of measurement units that are combined with laser transmitter and detectors to measure and correct shaft alignment with high accuracy and reliability. The data is transferred in real time through Bluetooth® 4.0 LE to the app. IMPORTANT NOTE: This app is designed to be used with the SKF Shaft Alignment Tool TKSA 51 and TKSA 71 hardware. The SKF TKSA 51 or TKSA 71 can be purchased separately from your local SKF Authorized Distributor. For more information and technical specifications about the SKF Shaft Alignment Tools, please visit our website.
Screenshots
Verdict
The clearest difference is rating: Ariel Quick Size at 5.0 against SKF Soft foot's 1.0. Ariel Quick Size also leads on iOS requirement (9.0 vs 15.0). SKF Soft foot's advantage is update cadence (every 3 months vs every 7 months). On price, ratings volume, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Ariel Quick Size holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Ariel Quick Size ships an update every 7 months, SKF Soft foot every 3 months. The most recent releases landed on July 1, 2026 and July 7, 2026 respectively.
| Parameter | Ariel Quick Size | SKF Soft foot |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Every 7 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 31 MB | 70 MB |
| Age rating | 4+ | 4+ |
| Developer | Ariel Corporation | SKF Sverige AB |
Customer experience
Ariel Quick Size
SKF Soft foot
In-app purchases
Ariel Quick Size
No in-app purchases
SKF Soft foot
No in-app purchases
Questions
Is Ariel Quick Size free?
Is SKF Soft foot free?
Which has better reviews, Ariel Quick Size or SKF Soft foot?
Do Ariel Quick Size or SKF Soft foot have ads?
Which is updated more often, Ariel Quick Size or SKF Soft foot?
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