Comparison

Calculator # vs Slope Calc

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

Head to head
About

Calculator #

This multi-function calculator offers basic to advanced scientific and algebraic computations. It includes features like handwriting recognition, equation solvers, and 2D graphing, making it suitable for students and professionals. In-app purchases unlock advanced capabilities.

Highlights
  • Math Photos Solver
  • Handwriting Recognition
  • AI Math Problem Solver
  • Mathematical Display
  • Equation Solvers
  • 2D Graphing
  • Algebraic Functions
Features
Read full description

◉ Over 11,000,000 Downloads Worldwide ◉ Top Free Utilities Apps in US, UK, AUS, CAN, GER,... ◉ Rated & Reviewed on ILoveFreeSoftware.com FREE Alternative to Graphing TI-83, TI-84, TI-89, Casio FX, Sharp EL,... Calculator # – The free, multi-function calculator for iPhone/iPad is proud to offer a variety of features to satisfy wide ranges of customers: The App possesses a powerful math core and algebra engine with mathematical display support, making it a viable tool for everyone from those looking for basic calculation to more advanced users, such as scientific computation, engineers, and math students. Calculator # makes available everything you need – including a user manual and tutorial video clips – so you can master the app in a matter of minutes! ◉ Official Website: http://iPhoneCalculator.com ◉ ADVANCED FEATURES: ▸ Math Photos Solver * ▸ Handwriting Recognition * ▸ Math Problem Solver (AI) * ◉ GENERAL FEATURES: ▸ Universal Calculator App ▸ Support All the Latest Devices ¹ ▸ Support Multitasking (iPad) ▸ Support Wireless KB ² ▸ Mathematical Display ▸ Edit & Export Expression/Result ▸ History Tape View ▸ Basic Calculations (+, -, x, ÷, %, Abs,...) ▸ Advanced Functions (Sin,Cos,Ln,X!, ^, √,…) ▸ 14 Memory Variables (Including X,Y,Z,M) ▸ Assignment Operator ▸ F(x) Customize Functions (F1 Only) ▸ Fraction and Degree/Angle Calculation ▸ Numeric Integral Calculation ▸ Dual Skins (Silver Light & Carbon+) ◉ ALGEBRA FEATURES: ▸ Big Integer & Rational Number (Up to 30!) ▸ Expand and Factor Polynomials ▸ Basic Indefinite integral ◉ EQUATIONS SOLVERS: ▸ Quadratic Equations ▸ System of Linear Equations (2 Unknowns) ◉ 2D GRAPH: ▸ Snap to Points ▸ Smooth Zoom & Transformation ▸ Support F(X,Y) = 0. E.g. Sin(X) + Cos(Y) = 0. ◉ MULTIPLE LANGUAGES: ▸ English, Spanish, German, ▸ French, Japanese, Chinese (*) In-App-Purchase is required ¹: Include iPhone 6/6S+ HD Retina Display ²: Standard English KB We love your feedback, Thanks a lot ! Terms of Service: https://iphonecalculator.com/terms-of-service/

About

Slope Calc

Read full description

Why do we use slope calculator? Calculating the slope of a line is a bit tricky and lengthy task, we can use the slope calculator to calculate the slope “m” of a linear equation. You can calculate the following terms. Slope from the equation of a line. Slope from two points. What is the slope of a line? The slope of a line is the steepness of a line or a curve, some other names for the slope are “gradient, slant, and incline.” To calculate the slope, we use the following formula. General formula of the slope: Generally, we use the following formula to calculate the slope “m”. m = rise / run = (y2 – y1) / (x2 – x1)  1. “x1, x2, y1, and y2 are the points on which the line lies on the cartesian coordinate. 2. “m” is the slope. Topographies: This slope calculator has many features that make it unique compared to other calculators. Input field: The input fields are very easy to use and very flexible. Separate boxes are designed for the ease of the user. Erasing all input: The “reset” button allows you to erase all the input at once. Calculate button: To calculate the result just tap on the “calculate” button. It will navigate you to the result screen. Mathematical format: Throughout the result section, “LaTeX” is used. LaTeX is a mathematical format used for writing mathematical expressions that makes the output easier to understand. UI/UX: This application has an amazing UI/UX that provides a user-friendly environment. Anyone can use this slope calculator easily. How to use the slope calculator? The procedure to calculate the slope with steps is quite easier with the help of this Slope calculator. You just have to follow the below steps: 1.Select the input type, “Line equation” or “Two points”. 2.Enter the values in the dedicated input boxes. 3.Press the “Calculate” button. In this way, you will get the step-by-step solution of the input. Install this application and make the calculation easier.

Screenshots

Calculator #4 screens
Slope Calc4 screens

Verdict

The call

The clearest difference is in-app purchases: Slope Calc at none against Calculator #'s 6. Slope Calc also leads on ads (none vs shown). Calculator #'s advantage is update cadence (every 2 months vs every 34 months) and iOS requirement (12.1 vs 15.6). On price 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. Calculator # sells 6 in-app purchases, starting at $1.49 per month. Slope Calc asks for nothing beyond the download.

UpkeepUpdate frequency

Calculator # ships an update every 2 months, Slope Calc every 34 months. The most recent releases landed on October 22, 2026 and October 17, 2026 respectively.

Scorecard4 real differences · 6 level
Calculator # versus Slope Calc: the parameters behind the verdict, then further details
ParameterCalculator #Slope Calc
PriceFreeFree
Rating4.6 (36K ratings) — better—
Positive reviews59.5% of reviews—
Number of ratings36K — better—
Update frequencyEvery 2 months — betterEvery 34 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPod, Mac
Requires iOS12.1 — better15.6
Further details — not scored
Size57 MB19 MB
Age rating4+4+
DeveloperIncpt.MobisAbdul Rehman

Bugs and requests

Calculator #

Reported bugs

3 issues
  • Crashes when trying to use certain functions
  • Handwriting recognition not working reliably
  • Inability to input negative numbers

Requested features

3 requests
  • Add option to turn off animation
  • Improve ad placement to avoid obstructing usage
  • Provide more transparency on paid features

Slope Calc

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

Calculator #

Subscriptions4
  • PRO Upgrade 1 Month3 Days trial$1.491 Month
  • PRO Upgrade 3 Months7 Days trial$2.993 Months
  • PRO + Recognition 1 Month$4.991 Month
Show 1 more
  • PRO + Recognition 3 Months$11.993 Months
One-time2
  • 250 AI Recognition & Queries$0.99
  • 600 AI Recognition & Queries$1.99
None

Slope Calc

No in-app purchases

Questions

Is Calculator # free?
Calculator # is free to download, with in-app purchases available.
Is Slope Calc free?
Slope Calc is free to download, with no in-app purchases.
Do Calculator # or Slope Calc have ads?
Calculator # shows ads; Slope Calc does not.
Which is updated more often, Calculator # or Slope Calc?
Calculator # ships an update every 2 months, and Slope Calc every 34 months. Most recently, Calculator # was updated on October 22, 2026 and Slope Calc on October 17, 2026.

Other comparisons