ODE Solver + vs Probability
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ODE Solver +
This utility app calculates ordinary differential equations using the Runge-Kutta method. It offers a step width of 0.01 for its calculations.
- Ordinary differential equation calculation
- Runge-Kutta method
- Step width 0.01
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It is calculated using Runge-Kutta method (step width 0.01).
Probability
Enhance your decision-making skills by learning to assess probabilities with this app. It offers formulas for problem-solving, note-taking capabilities, and interactive tools like dice and coin tosses for practical learning.
- Probability assessment
- Decision-making improvement
- Problem-solving formulas
- Personalized notes
- Dice and coin toss simulations
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Probability is the key to making decisions under uncertainty, and with our app, you can improve your ability to assess probabilities and make better decisions in life. Our app includes different formulas to help you solve problems and make decisions, as well as the option to take references and write down your own notes about probability. Plus, you can have fun with probability by tossing dice and coins.
Screenshots
Verdict
The clearest difference is rating: ODE Solver + at 4.0 against Probability's 1.0. ODE Solver + also leads on in-app purchases (none vs 1) and ratings volume (4 vs 1). Probability's advantage is ads (none vs shown). On price, update cadence, 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
Both are free to download. Probability sells 1 one-off in-app purchase. ODE Solver + asks for nothing beyond the download.
ODE Solver + holds the better App Store score, 4.0 against 1.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively.
ODE Solver + ships an update weekly, Probability every 10 days. The most recent releases landed on November 3, 2026 and November 12, 2026 respectively.
| Parameter | ODE Solver + | Probability |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (4 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 4 — better | 1 |
| Update frequency | Weekly — better | Every 10 days |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 14.0 | 14.0 |
| Further details — not scored | ||
| Size | 11 MB | 166 MB |
| Age rating | 4+ | 4+ |
| Developer | Takahiko Nakade | Man Hung Sun |
Customer experience
ODE Solver +
Probability
In-app purchases
ODE Solver +
No in-app purchases
Probability
- Upgrade$0.99
Questions
Is ODE Solver + free?
Is Probability free?
Which has better reviews, ODE Solver + or Probability?
Do ODE Solver + or Probability have ads?
Which is updated more often, ODE Solver + or Probability?
Other comparisons
