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Android Apps > Tools > Gacha Calc: Probability Sim
Gacha Calc: Probability Sim icon

Gacha Calc: Probability Sim

by simplewoody · Tools · Free
On Google Play since December 2025 · Data updated 2026-11-01
Google Play

Gacha Calc: Probability Sim is made and published by simplewoody. AppBrain is an independent app data site and isn't affiliated with simplewoody. The app name, icon, screenshots and description belong to simplewoody and are shown as published on Google Play.

AppBrain's verdict

Niche
Installs
94
Last updated
March 14, 2026
Ads
Contains ads
Size
22.8 MB

Gacha Calc: Probability Sim is a niche app, with 94 installs. It doesn't have enough ratings yet to judge what users think.

User feedback

Ratings and reviews on Google Play

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Store listing

By simplewoody, from Google Play

“Calculate Gacha Odds & Costs”

Gacha Calc: Probability Sim Screenshot 1 of 6
Gacha Calc: Probability Sim Screenshot 2 of 6
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Gacha Calc: Probability Sim Screenshot 4 of 6
Gacha Calc: Probability Sim Screenshot 5 of 6
Gacha Calc: Probability Sim Screenshot 6 of 6
Screenshots by simplewoody, from the Google Play listing
Description by simplewoody Written by the developer, not by AppBrain. Click to read.
Are you a fan of in-game gacha draws, opening your wallet based solely on the hope of "This time, it has to drop"?
The [Gacha Calc: Probability Sim] is your essential tool, helping you predict spending and make smarter drawing plans based on mathematical probability, not just intuition.
✨ Key Features
- Accurate Probability Calculation (Independent Trials): Simply enter the item's drop rate (%) and your desired number of attempts. The app instantly calculates the "Probability of acquiring at least one item."
- Predictive Table: We provide an easy-to-read table showing the minimum number of attempts and the estimated cost required to reach your target probability milestones (e.g., 50%, 90% success rate).
- History Tracking: Conveniently save your calculation results and check your simulation data anytime in the history log, allowing you to track your past strategies.
- Clean UI/UX: The app offers a simple, intuitive design that anyone can use—no complex formulas, just instant input and immediate results.
💰 Stop Overspending Now!
Instead of relying on vague expectations, use the [Gacha Calc: Probability Sim] to predict your goal achievement rate and optimize your spending.

Recent changes:
en-US Improved input removal
Official page on Google Play Also on the App Store

Safety and technology

Found in the app by AppBrain
Ads
Contains ads
Price
Free
Libraries
?
App size
22.8 MB
Content rating
Everyone

Technologies used by Gacha Calc: Probability Sim

12 permissions
Subscribe to see full permission and library details

Releases

Updates seen on Google Play
Version
1.1.7
Launched
December 2025
  • Apr 17, 2026Installs50+ installs
  • Mar 14, 2026UpdateVersion 1.1.7
  • Jan 23, 2026Installs10+ installs
  • Jan 15, 2026UpdateVersion 1.1.1
  • Dec 10, 2025New AppVersion 1.0.6 in TOOLS for Free
Show all changes Show fewer

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Also available on the App Store

Gacha Calc: Probability Sim icon Gacha Calc: Probability Sim
hyeokjin cho
0.0
Free

Installs

Tracked by AppBrain
Last 30 days
12
Play install range
50+
Launched
December 2025

Installs over time

Gacha Calc: Probability Sim has been installed 94 times. Over the past 30 days, it has been installed 12 times.

Rankings

Google Play top charts

Google Play Rankings for Gacha Calc: Probability Sim

This app is not ranked

About the app and developer

About Gacha Calc: Probability Sim

Gacha Calc: Probability Sim is a tools app developed by simplewoody.

Install Statistics

Gacha Calc: Probability Sim has been installed 94 times. In the last 30 days, the app was installed 12 times.

User Ratings

The app has no ratings yet.

App Information

Gacha Calc: Probability Sim is freely available from Google Play. The app size is 22.78 MB. The latest version available is 1.1.7. The last update was on March 14, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on Google Play since December 2025.

App Performance Report

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Developer information for simplewoody

simplewoody

hyucks1993@gmail.com

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