OmniCalc: 185 Calculators

Ynoxa

Contains ads

About this app

OmniCalc brings 185 calculators into one fast, organised app. Check a loan EMI,
convert units, split a bill, solve a geometry problem or work through homework
without jumping between separate tools. Calculations run on your device and work
offline; only live currency-rate updates need a connection.

WHAT IS INSIDE

• Basic (22) — arithmetic, percentages, percentage change, fractions, ratios,
proportions, averages, GCD and LCM, primes, powers, roots and logarithms
• Scientific (18) — trigonometry, logarithms, matrices, programmer bases,
combinations and permutations
• Geometry (22) — area, perimeter, volume and surface area for every common
2D and 3D shape, plus coordinate geometry
• Finance (23) — loan EMI with a full amortisation schedule, mortgage,
prepayment, loan comparison, compound interest, SIP, ROI and currency
• Business (16) — profit margin, markup, discount, sales tax, GST and VAT,
tips, bill splitting and break-even
• Health (14) — BMI, body fat, BMR, TDEE, calories, macros, water intake
• Unit converters (25 categories) — length, mass, temperature, area, volume, speed,
data, energy, pressure, power and more
• Date and time (13) — age, date difference, working days, time zones
• Construction (12) — concrete, paint, tiles, flooring, roofing, bricks
• Education (10) — GPA, CGPA, percentage to grade, marks and attendance
• Engineering (10) — Ohm's law, resistor colour codes, gear ratios, beam loads
• Everyday (10) — fuel cost, mileage, recipe scaling, download time

BUILT TO BE TRUSTED WITH A NUMBER

Money is calculated with exact decimal arithmetic instead of floating point, so
an amortisation schedule closes at 0.00 rather than drifting by cents. Every
result can expand to show the steps and the formula behind it. Where a figure is
an estimate rather than an answer — health, tax, construction — the app says so
on the screen instead of hiding it in a policy.

CHARTS THAT ACTUALLY EXPLAIN

Results that split a whole get a labelled donut showing the total in the middle.
Results that change over time get a bar or line chart with both axes labelled
and a legend, and the tables underneath use the same colours, so a column and
its series are obviously the same thing.

PRIVATE BY CONSTRUCTION

Every calculation runs on your device. The numbers you type, the results, and
your saved history stay on your phone and are excluded from cloud backups. They
are never uploaded to analytics or advertising. Anonymous usage events record
which calculator was opened and whether it succeeded, never what you typed, and
can be switched off in Settings.

WORKS THE WAY YOU DO

• Fully offline — only the currency converter needs a connection, and it caches
rates so it keeps working without one
• History you can search, filter, pin and export to CSV or PDF
• Favourites and recents so your calculators come to you
• Light and dark themes with Material You colours
• Genuine tablet and landscape layouts, not a stretched phone screen
• Full support for larger font sizes and TalkBack

AD-SUPPORTED WITHOUT GETTING IN YOUR WAY

Ads appear only in dedicated spaces outside calculator inputs, result cards and
keypads. Full-screen ads never interrupt data entry or appear before a completed
calculation. Where required, OmniCalc asks for consent before requesting ads and
keeps privacy controls available in Settings.

DISCLAIMER

Results are estimates for general information. They are not financial, medical,
legal, tax or professional engineering advice. Always confirm important
decisions with a qualified professional and with the authoritative source for
any rate, code or standard.

What’s new

Added saved scenarios, private on-device recommendations, improved onboarding, a one-time Remove ads option, optional rewarded ad-free time, and reliability improvements.