Slopes vs Thunderbolt24
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Interactive ODE exploration
- Vector field plotting
- Systems of equations solver
- Numerical approximation methods
- Bifurcation diagram creation
- Preloaded and custom examples
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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.
Thunderbolt24
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
| Parameter | Slopes | Thunderbolt24 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (41 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 41 — better | — |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 21 MB | 205 MB |
| Age rating | 4+ | 4+ |
| Developer | Tim Lucas | Nikhar Sachdeva |
In-app purchases
Slopes
No in-app purchases
Thunderbolt24
No in-app purchases









