Comparison

Slopes vs Thunderbolt24

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

Thunderbolt24

Features
Read full description

Thunderbolt24 is a modern online learning platform designed to help students learn effectively through structured online classes. The app focuses on delivering a smooth and reliable learning experience for students preparing for their academic goals. Whether you're getting ready for exams or improving your understanding of subjects, Thunderbolt24 provides a simple and focused environment for learning.

Screenshots

Slopes4 screens
Thunderbolt244 screens

Verdict

The call

The clearest difference is update cadence: Slopes at every 2 months against Thunderbolt24's every 5 months. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Slopes ships an update every 2 months, Thunderbolt24 every 5 months. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

Scorecard1 real difference · 9 level
Slopes versus Thunderbolt24: the parameters behind the verdict, then further details
ParameterSlopesThunderbolt24
PriceFreeFree
Rating4.9 (41 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings41 — better—
Update frequencyEvery 2 months — betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size21 MB205 MB
Age rating4+4+
DeveloperTim LucasNikhar Sachdeva

In-app purchases

None

Slopes

No in-app purchases

None

Thunderbolt24

No in-app purchases

Questions

Is Slopes free?
Slopes is free to download, with no in-app purchases.
Is Thunderbolt24 free?
Thunderbolt24 is free to download, with no in-app purchases.
Do Slopes or Thunderbolt24 have ads?
Neither Slopes nor Thunderbolt24 shows ads.
Which is updated more often, Slopes or Thunderbolt24?
Slopes ships an update every 2 months, and Thunderbolt24 every 5 months. Most recently, Slopes was updated on October 24, 2026 and Thunderbolt24 on October 28, 2026.

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