Fitness & Health
Training, habits and wellbeing companions that help people build sustainable routines without the noise.
Independent Software Studio
Thoughtful apps, built with precision and care.
ARSIDIAN LLC designs and develops its own portfolio of apps and web products — from fitness and health companions to personal finance tools and everyday utilities. Quiet design, dependable engineering, respect for your data.
What We Build
A focused portfolio of products
Every app we ship is our own — conceived, designed and engineered in-house.
Personal Finance
Clear, private tools for budgeting, tracking and understanding money — designed for calm decisions.
Utilities
Small, sharp tools that do one job exceptionally well and stay out of your way the rest of the time.
And Beyond
We keep exploring. New categories join the portfolio when we believe we can build something genuinely better.
Live Products
Built, shipped and quietly at work
A selection of our web products — calculators and reference tools serving visitors around the world, every day.
Amortization Calc
An amortization schedule calculator for mortgages, auto and personal loans — every payment, month by month, with the true cost of borrowing made visible.
MLcalc
A mortgage & loan calculator with taxes, insurance, PMI and HOA, full amortization breakdowns, live charts and current mortgage rates.
Calculator.iO
A gallery of 160+ carefully crafted calculators — math, statistics, finance, health, time & date — that make the important numbers in life easy to understand.
Mortgage Calculator Plus
A friendly mortgage payment calculator with house-affordability tools, state-by-state guides and rate references for US home buyers.
About
A studio, not a factory
ARSIDIAN LLC is a Wyoming-registered software company that creates and operates its own applications. We don't take client work and we don't chase trends — we build products we want to exist, then refine them patiently over time.
Our principles are simple: interfaces that feel inevitable, engineering that holds up, and a relationship with users built on privacy and trust.
Independent & product-owned
Every app in our portfolio is developed and operated in-house.
Registered in Wyoming, USA
ARSIDIAN LLC, a limited liability company.
Privacy as a feature
We collect the minimum, and we never sell personal data.
Contact
Let's talk
Questions about our apps, partnership ideas, press inquiries — we read everything and reply personally.
Use the form and we'll get back to you by email as soon as we can.
ARSIDIAN LLC
1611 E 2nd St
Casper, WY 82601
United States