Calculator + vs Steel Pipe
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator +
This app offers a free basic and scientific calculator with an intuitive interface. It supports fractions, percentages, and advanced editing. Optional upgrades provide specialized calculators for fractions with units, polynomial and linear equation solving, graphing, and geometric shapes.
- Free basic and scientific calculator
- Intuitive interface with equation and result display
- Fraction and percent support
- Advanced editing capabilities
- Polynomial and linear equation solver
- Graphing calculator
- Unit conversion and geometric calculators
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Award winning calculator app for iPad and iPhone. Designed with simplicity, usability and beauty in mind! FEATURES: - Free basic calculator - Free scientific calculator - Elegant & Intuitive interface - Advanced editing by easily going back and forth - Displays both the equation & the result at the same time - Supports Fraction & Percent - Supports many scientific functions If you are looking for more advanced features you can upgrade to one or more of the following: - Fraction Calculator with feet, inches & cm support! - Solving for x with a polynomial Calculator for solving quadratic & cubic equations 2x³ - 4x² - 22x + 24 = 0 - Linear Equations Solver for solving system of linear equations 2x – y = 9 3x + 4y = –14 - Graphing Calculator to find the local min, max & intersection points y = 2x³ – 4x (x² + y²)³ = -27y²x² - Triangle Calculator - Cone Calculator - Arc Calculator - Circle Calculator - Base Converter ( HEX OCT BIN DEC ) - Multiple themes Enjoy the FREE Scientific calculator on your iPhone & iPad. If you like it, support us by upgrading or giving us a positive review. Thanks :) Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Steel Pipe
Access essential data for common steel pipe sizes, including outside diameter, wall thickness in both inches and millimeters, and weight per meter in pounds and kilograms. This utility app also provides pipe schedule information.
- NPS steel pipe data
- Outside diameter
- Wall thickness (inches/mm)
- Weight (lbs/kg per meter)
- Pipe Schedule information
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Most common Nominal Pipe Size [NPS] steel pipe information: Outside diameter Wall thickness in inches and mm Weight in pounds and kg per meter Pipe Schedule NPS and pipe diameter estimation tool based on partially accessible pipe using chord and sagitta
Screenshots
Verdict
The clearest difference is in-app purchases: Steel Pipe at none against Calculator +'s 12. Steel Pipe also leads on ads (none vs shown) and review sentiment (100% vs 85%). Calculator +'s advantage is update cadence (every 5 days vs every 4 months) and ratings volume (10K vs 34). On price and rating 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 $4.99 per month. Steel Pipe asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.6 for Calculator + against 4.7 for Steel Pipe. That said, the two scores are not equally well evidenced: Calculator + has 10K ratings behind it against 34, so its average is the more settled of the two. Written reviews are what separate them: 85% of Calculator +'s written reviews are positive against 100% of Steel Pipe's.
Calculator + ships an update every 5 days, Steel Pipe every 4 months. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.
| Parameter | Calculator + | Steel Pipe |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (10K ratings) | 4.7 (34 ratings) — better |
| Positive reviews | 84.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 10K — better | 34 |
| Update frequency | Every 5 days — better | Every 4 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 16.4 | 13 — better |
| Further details — not scored | ||
| Size | 50 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | xNeat.com | River Right Ltd |
Customer experience
Calculator +
Steel Pipe
Bugs and requests
Calculator +
Reported bugs
5 issues- Fraction calculator has TWO subtraction buttons and NO division button
- Decimals seem to be changed to fraction with no apparent way of changing it back
- Functionality is dropped by forcing you to the main menu every time you open it
- Currency converter broken
- Login screen freezes
Requested features
5 requests- Add mod function
- Add commas
- Add 1/x function
- Support for Retina Display
- Add number 4 with two lines
Steel Pipe
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Calculator +
- Scientific Calculator3 Days trial$4.991 Month
- Calculator7 Days trial$39.991 Year
- Linear Calculator$2.99
- Factoring Calculator$2.99
- Handwriting Calculator$2.99
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- Currency Converter$2.99
- Themes Pack$2.99
- Graphing Calculator$3.99
- Fraction Calculator$3.99
- Scientific Calculator$4.99
- Calculator Plus$4.99
- Calculator$16.99
Steel Pipe
No in-app purchases
Questions
Is Calculator + free?
Is Steel Pipe free?
Which has better reviews, Calculator + or Steel Pipe?
Do Calculator + or Steel Pipe have ads?
Which is updated more often, Calculator + or Steel Pipe?
Other comparisons
