Comparison

Slopes vs Calculus

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

Head to head
About

Slopes

Explore graphical solutions to ordinary differential equations with this interactive educational tool. It offers six distinct activities, including plotting vector fields, solving systems of equations, and visualizing oscillations. Ideal for homework, classroom use, or research projects.

Highlights
  • Interactive ODE exploration
  • Vector field plotting
  • Systems of equations solver
  • Numerical approximation methods
  • Bifurcation diagram creation
  • Preloaded and custom examples
Features
Read full description

Slopes is an interactive environment for exploring graphical solutions to ordinary differential equations. Slopes consists of six activities with preloaded examples to get you started and the ability to input your own content. "Slopefields" and “Phase Planes” both plot vector fields and solutions corresponding to multiple initial conditions. “Systems” dynamically solves systems of up to six equations. “Oscillations” solves second-order constant coefficient equations and animates the corresponding spring-mass system or RLC circuit. “Methods” constructs numerical approximations of a single ordinary differential equation using Euler’s method as well as Second and Fourth Order Runge-Kutta methods. "Bifurcations" creates a bifurcation diagram and shows the stability of equilibrium points. Slopes is a playground for ODEs. You can use it for homework, in-class activities or a new research project.

About

Calculus

Learn calculus comprehensively through 10 chapters and reinforce your understanding with an interactive quiz game. This app caters to both beginners and advanced learners, offering hints and challenging problems. Enjoy a clear, adaptable interface with font size adjustments and light/dark mode support.

Highlights
  • 10-chapter calculus curriculum
  • Interactive calculus quiz game
  • Beginner to advanced learning paths
  • Adjustable font size
  • Light and dark mode support
  • Covers differentiation, integration, and differential equations
Read full description

Study Calculus from A to Z in 10 chapters, all in one app! Then play the in-app Calculus Quiz game to perfect your skills. One Level builds the necessary knowledge for the next Level as you advance. - Suitable for BEGINNERS: Teach yourself Calculus from Zero to the level of a Pro using the HINTS provided. - Adequate for the PROs: Revise and consolidate your Calculus knowledge while facing off with real Pure Math challenges. - Enjoy crisp clear Math text that adjusts its Font size and adapts to both Light and Dark Mode. Featured topics: - Differentiation 1: Curve gradient, Tangents and Normals, Velocity and Acceleration - Differentiation 2: Maxima and Minima, Curve sketching, Second derivative, Small changes - Integration: Reverse differentiation, Area under a curve, Definite integrals, Solids of Revolution, Centres of gravity - Further differentiation: Chain rule, Products and Quotients, Implicit functions, Parameters, Second derivatives - Trigonometry: Radian measure, Trigonometry derivatives, Inverse trigonometry, General solutions - Further Integration 1: Function and derivative, Change of variable, Parameters, Inverse trigonometry - Exponential and Log functions: The exponential function, Deriving y = e^x, The natural logarithm, Logarithmic differentiation - Partial fractions: Linear factors, Quadratic factors, Repeated roots, Improper fractions - Further Integration 2: Integration by parts, Taking dv/dx as 1, Variable t = tan(x/2), Splitting the numerator - Differential equations: Separating variables, Integrating factor, Homogenous equations, Differential problems

Screenshots

Slopes4 screens
Calculus4 screens

Verdict

The call

The clearest difference is review sentiment: Slopes at 100% against Calculus's 33%. Slopes also leads on rating (4.9 vs 3.5) and in-app purchases (none vs 13). On price, ads, device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Calculus sells 13 one-off in-app purchases. Slopes asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Slopes holds the better App Store score, 4.9 against 3.5. That said, the two scores are not equally well evidenced: Slopes has 41 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 100% of Slopes's written reviews are positive against 33% of Calculus's.

UpkeepUpdate frequency

Slopes ships an update every 2 months, Calculus every 16 months. The most recent releases landed on October 6, 2026 and September 27, 2026 respectively.

Scorecard6 real differences · 4 level
Slopes versus Calculus: the parameters behind the verdict, then further details
ParameterSlopesCalculus
PriceFreeFree
Rating4.9 (41 ratings) — better3.5 (4 ratings)
Positive reviews100.0% of reviews — better33.3% of reviews
Number of ratings41 — better4
Update frequencyEvery 2 months — betterEvery 16 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size21 MB40 MB
Age rating4+4+
DeveloperTim LucasRichard Ssenyonjo

Customer experience

Slopes

All ratings40 ratings
Positive97.5%
Neutral0.0%
Negative2.5%
Written reviews8 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Calculus

All ratings4 ratings
Positive50.0%
Neutral25.0%
Negative25.0%
Written reviews6 reviews
Positive33.3%
Neutral16.7%
Negative50.0%

In-app purchases

None

Slopes

No in-app purchases

13 purchases

Calculus

One-time13
  • Get 1,000 Coins$0.99
  • Get 5,000 Coins$1.99
  • Get 10,000 Coins$2.99
Show 10 more
  • Unlock Calculus 1$2.99
  • Unlock Calculus 2$2.99
  • Unlock Calculus 3$2.99
  • Unlock Chapter 5$2.99
  • Unlock Calculus 8$2.99
  • Unlock Calculus 9$2.99
  • Unlock Calculus 4$2.99
  • Unlock Calculus 6$2.99
  • Unlock Calculus 7$2.99
  • Unlock Calculus 10$2.99

Questions

Is Slopes free?
Slopes is free to download, with no in-app purchases.
Is Calculus free?
Calculus is free to download, with in-app purchases available.
Which has better reviews, Slopes or Calculus?
Slopes is rated higher. Slopes averages 4.9 out of 5 from 41 ratings, while Calculus averages 3.5 from 4 ratings.
Do Slopes or Calculus have ads?
Neither Slopes nor Calculus shows ads.
Which is updated more often, Slopes or Calculus?
Slopes ships an update every 2 months, and Calculus every 16 months. Most recently, Slopes was updated on October 6, 2026 and Calculus on September 27, 2026.

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