Probability vs Trillion
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Trillion
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Probability Simulator 1T Trials is a powerful simulation app that lets you test probabilities to the extreme. Run up to 1 trillion trials and calculate probabilities as low as 1 in a trillion. Choose from decimal, percentage, or fraction notation. Simultaneously run multiple probability events for complex calculations. Perfect for statistics enthusiasts, mathematicians, and anyone interested in random trials. Sharpen your probability intuition and gain real insights from large-scale simulations.
Screenshots
Verdict
The clearest difference is ads: Probability at none against Trillion's shown. Probability also leads on update cadence (every 10 days vs every 12 months). On price, in-app purchases, 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 and Trillion sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Probability ships an update every 10 days, Trillion every 12 months. The most recent releases landed on September 4, 2026 and September 18, 2026 respectively.
| Parameter | Probability | Trillion |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 10 days — better | Every 12 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 166 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Man Hung Sun | kota tada |
In-app purchases
Probability
- Upgrade$0.99
Trillion
- Ad-free for 1 month7 Days trial$4.991 Month
- Ad-free for 1 year14 Days trial$49.991 Year
Questions
Is Probability free?
Is Trillion free?
Do Probability or Trillion have ads?
Which is updated more often, Probability or Trillion?
Other comparisons
