Calculator₊ vs SKF Machine train alignment
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator₊
This app offers a comprehensive suite of calculation tools, including basic, scientific, and unit conversion functions. It features an AI-powered math solver that can solve problems from photos and a dedicated math notes section for jotting down equations and diagrams. Accessibility options like dynamic text size and VoiceOver support are also included.
- Basic and scientific calculations
- Unit and currency converter
- AI-powered math solver with photo recognition
- Math notes with instant solutions
- Calculation history log
- Accessibility features
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America's #1 Calculator App! Download Calculator₊ Now - Your All-in-One Math Solution! We're excited to announce the biggest update to Calculator₊ in 10 years! With over 200 million downloads and a whopping 3 million+ 5-star ratings, Calculator₊ is the trusted choice of millions worldwide. And now, it's even better! More Than Just Your Average Calculator! • Standard Calculator: Breeze through basic arithmetic operations like addition, subtraction, multiplication, and division. • Scientific Calculator: Tackle complex calculations with ease, including trigonometric, logarithmic, and exponential functions. • Calculation History: Keep track of your past calculations with a detailed history log. • Unit Converter: Effortlessly convert units like inches to centimeters and much more, making it a handy tool for everyday use. • Percentage Calculator: Easily calculate percentages, increases, and decreases with pre-designed input fields that do the work for you. • Currency Converter: Convert currencies in real-time, including Bitcoin, with the latest exchange rates. • Fraction Calculator: Work seamlessly with fractions – perfect for students and professionals alike. • Ad-Free Experience: Say goodbye to annoying full-screen ads and focus on your calculations. Be Amazed by Our New AI-Powered Math Solver! • AI Math Solutions: Instantly solve math equations, quizzes, and word problems with our advanced AI. Use the Photo Solver to snap a picture of any problem, and Calculator₊ will work its magic. • Math Notes: A dedicated note-taking tool for all your math needs. Jot down equations, diagrams, and notes in a space designed for mathematical thinking. • Instant Math: In Math Notes mode, simply write an equation, add an "=", and Calculator₊ will generate the solution in real-time. Built for Everyone, Now Even More Accessible! Calculator₊ is designed to work effortlessly for all users, no matter how you use your iPhone, and includes these additional accessibility features: • Dynamic Text Size: Scale the calculator interface to the text size that works best for you, without losing layout clarity. • VoiceOver Support: Navigate & Calculate using VoiceOver, fully compatible with iOS accessibility settings. • High-Contrast Mode: A bold, high-contrast display that makes every button and result instantly readable in any lighting condition. • Dark and Light Mode: Calculator₊ automatically adjusts to your preferred mode. Why Choose Calculator₊? • Proven Track Record: Over a decade of providing fast and reliable calculations. • Loved by Millions: Join the 200+ million users who rely on Calculator₊, with an average rating of 4.7 stars from 3.5 million reviews. • Versatile & Powerful: Handles everything from basic sums to advanced scientific calculations. Perfect for school, work, or home. Celebrate with a Special Gift! To celebrate the release of this massive update, we're offering a 1-MONTH FREE TRIAL of our premium features, including: • Ad-Free Experience: No more pesky ads. • Unlimited AI Math Solving: Solve as many equations and problems as you need. • Unlimited Fraction Calculations: Ideal for students and professionals alike. • Unlimited Currency Conversions: Including real-time Bitcoin conversions. • Premium Customer Support: Get priority assistance from our expert support team. If you have any suggestions or questions, our support team is ready to help. Simply email us at support@impalastudios.com. Terms & Conditions: https://impalastudios.com/terms Privacy Policy: https://impalastudios.com/privacy
SKF Machine train alignment
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The Machine train shaft alignment app is designed to be used with the SKF Shaft Alignment Tool TKSA 71. Together, the TKSA 71 and the app form an alignment system that allows the alignment of machine trains with multiple connected machines in an intuitive and easy way. The system uses line laser to PSD technology that enables highly accurate and reliable shaft alignments. The TKSA 71 and this app communicate wirelessly via Bluetooth®. Without the hardware the app can nonetheless be used, as it features a fully functional demonstration allowing the complete alignment process of a machine train to be experienced before purchasing the TKSA 71. KEY FEATURES: • Very easy-to-use – The Machine train shaft alignment app focuses on making the alignment tasks of several couplings as easy as possible and enabling accurate machine train shaft alignments. • Quick Three Point Alignment Measurements - Follow the guidance of the app and perform a full 9-12-3 measurement or perform a limited rotation measurement with as little as 40 degrees of total rotation. • Selectable stationary feet – The alignment process records the complete alignment situation and allows the operator to select two pairs of stationary feet. The app then calculates the required machine movement for all feet while keeping the stationary feet pairs at the same location. The operator can easily find the best alignment strategy by selecting different pairs of stationary feet and checking the required movement for the alignment correction. • The machine train app is designed for machine trains of three machines, covering common machine trains like motor – gearbox – application combinations. • Demonstration mode – The Machine train shaft alignment app offers a fully functional demonstration mode allowing the complete alignment process to be experienced before purchasing the TKSA 71. • Automatic alignment report – Automatically generated alignment reports give a complete overview of the alignment process and results. The reports can be customized with additional notes, a machine picture and a signature. The report can easily be shared via email or cloud services. • Easy to follow explanatory videos – Short explanatory videos are available in the help section of the app and show in easy steps how to set up and perform accurate alignment measurements. • 3D Animations – 3D animations intuitively guide the user through the alignment process, allowing accurate shaft alignment 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 71: The SKF TKSA 71 system uses 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 71 hardware. The SKF TKSA 71 can be purchased separately from your local SKF Authorized Distributor. For more information and technical specifications about the SKF Shaft Alignment Tool, please visit our website.
Screenshots
Verdict
The clearest difference is in-app purchases: SKF Machine train alignment at none against Calculator₊'s 13. SKF Machine train alignment also leads on ads (none vs shown). Calculator₊'s advantage is update cadence (every 3 weeks vs every 3 months) and chart position (#99 vs unranked). On price 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
Both are free to download. Calculator₊ sells 12 in-app purchases, starting at $0.99 per month. SKF Machine train alignment asks for nothing beyond the download.
Calculator₊ ships an update every 3 weeks, SKF Machine train alignment every 3 months. The most recent releases landed on October 27, 2026 and October 19, 2026 respectively.
| Parameter | Calculator₊ | SKF Machine train alignment |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (1.7M ratings) — better | — |
| Positive reviews | 63.1% of reviews | — |
| Number of ratings | 1.7M — better | — |
| Update frequency | Every 3 weeks — better | Every 3 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #99 — better | — |
| Devices | iPhone, iPad, iPod, Apple Watch, Vision Pro — better | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 237 MB | 69 MB |
| Age rating | 4+ | 4+ |
| Developer | Impala Studios | SKF |
Bugs and requests
Calculator₊
Reported bugs
2 issues- Incorrect calculation results for certain functions
- Inability to delete last entered digit without clearing entire calculation
Requested features
3 requests- Ability to delete individual calculation history entries
- More free advanced calculator features (fractions, currency, etc.)
- Improved ad placement that doesn't interfere with usage
SKF Machine train alignment
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Calculator₊
- Premium Member Special Offer7 Days trial$0.991 Month
- Monthly Premium Member3 Days trial$0.991 Month
- 1 Month Premium Access7 Days trial$1.491 Month
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- Unlimited Math Calculations7 Days trial$3.996 Months
- Half-Yearly Premium Member3 Days trial$3.996 Months
- Calculate Faster, AI, & No Ads3 Days trial$4.997 Days
- 1 Year Ad-Free3 Days trial$5.991 Year
- Calculate Faster, AI, & No Ads3 Days trial$5.997 Days
- 1 Month Premium Trial1 Month trial$5.997 Days
- Math Solver/Full Access/No Ads$5.997 Days
- 6 Months Premium Access7 Days trial$8.996 Months
- Smart Currency & Fraction Calc7 Days trial$14.991 Year
SKF Machine train alignment
No in-app purchases
Questions
Is Calculator₊ free?
Is SKF Machine train alignment free?
Do Calculator₊ or SKF Machine train alignment have ads?
Which is updated more often, Calculator₊ or SKF Machine train alignment?
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