Formula Lab - Calc & Simulator

Contains adsIn-app purchases
1+
Downloads
Content rating
Everyone
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About this app

For those who demand more than just a simple calculation.
Formula Lab is a next-generation simulation tool that lets you build your own calculation models and instantly visualize complex "what-if" scenarios with countless variables.

◆ Start in One Tap with Templates
Includes a rich library of practical, professional templates like "Compound Interest," "Game Damage (Crit Avg.)," "Loan Payments," and "Physics Formulas." Complex equations become yours with a single selection. No need to start from scratch.

◆ Build & Grow Your Calculator at Your Fingertips
Freely create and edit your own unique formulas in a powerful editor that supports functions like max(0, {ATK} - {DEF}), min(), and floor(). Parameters can be written simply as {Variable Name}.

◆ Switch Scenarios Instantly with Presets
Save combinations of parameter values as named Presets like "Warrior Lv10" or "Bear Market Scenario." Instantly switch between situations from a dropdown menu to compare how results change.

◆ Discover the Optimal Solution with Dynamic Graphs
Simply choose a parameter for the X-axis to see how results change on a beautiful graph. As you move the sliders, the graph transforms in real-time. Better yet, you can overlay the before-and-after graphs to compare them, allowing you to intuitively find the perfect balance.

◆ Structure Your World with Entities
Individually manage groups of parameters (Entities) like "Player" and "Enemy," or "Product A" and "Product B." Handle complex interactions between entities, such as {Player:Attack} - {Enemy:Defense}, all within this single tool.

◆ Organize Your Thoughts by Reusing Formulas
A formula you create (e.g., Base Damage) can be called from another formula using {f:Base Damage}. Break down complex calculations into reusable components to keep your thoughts clear.

【Key Use Cases】

・Theorycrafting and calculating damage for RPGs and simulation games.
・Financial simulations for investments (compound interest), loan repayment plans, and more.
・A mobile alternative to Excel or spreadsheets for "What-if analysis."
・Interactive learning and research of physics and chemistry formulas by adjusting variables.
・Business forecasting and break-even point analysis.

Unleash your spirit of inquiry.
Updated on
Sep 20, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Location, App activity and 2 others
Data is encrypted in transit

App support

About the developer
HEPPOCOASTER
hpcoster.apps@gmail.com
1-10-8, DOGENZAKA SHIBUYA DOGENZAKA TOKYU BLDG. 2F. C SHIBUYA-KU, 東京都 150-0043 Japan
+81 70-4796-7428