Turtle vs Probability
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Turtle
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透過Bitfinex提供的API金鑰，將Bitfinex原本放貸功能的資訊用較清晰的方式顯示。並加上一些分析圖表，讓使用者能更方便的識別及分析。
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 in-app purchases: Turtle at none against Probability's 1. Probability's advantage is update cadence (every 10 days vs every 3 months). 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
Both are free to download. Probability sells 1 one-off in-app purchase. Turtle asks for nothing beyond the download.
Turtle ships an update every 3 months, Probability every 10 days. The most recent releases landed on November 28, 2025 and September 4, 2026 respectively.
| Parameter | Turtle | Probability |
|---|---|---|
| Price | Free | Free |
| Rating | — | 1.0 (1 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 25 MB | 166 MB |
| Age rating | 4+ | 4+ |
| Developer | CHENGWEN WU | Man Hung Sun |
In-app purchases
Turtle
No in-app purchases
Probability
- Upgrade$0.99
