📖 About Glass Calculator
Glass Calculator combines a powerful scientific calculator, unit
converter with live currency rates, and graphing in a stunning
glass-effect interface. It changes its interface and behavior based
on context — morphing into whatever you need: basic arithmetic,
scientific functions, unit conversion, currency exchange, or more.
Privacy-focused: no data collection, no account required, no
tracking. All calculations and conversions are performed entirely
on your device.
❓ Frequently Asked Questions
What is Glass Calculator?
A beautifully designed all-in-one calculator with a premium
glass-effect interface. It supports basic calculations, advanced
scientific functions, unit conversions (13 categories), live
currency exchange rates, and calculation history.
How do I switch between modes?
Tap the mode button (≡) on the display to open the mode picker.
Select from Basic, Scientific, Converter, Graphing, or History.
The interface adapts to each mode.
How does the unit converter work?
Switch to Converter mode, select a category (Length, Weight,
Temperature, Volume, Area, Speed, Time, Digital Storage, Energy,
Pressure, Fuel Economy, Angle, or Currency), choose your from/to
units, and enter a value. Results appear instantly.
Are currency rates live?
Yes. The app fetches live exchange rates from
open.er-api.com when you use the Currency converter. If the
fetch fails, it falls back to 1:1 rates so the converter still
functions.
Does the app collect my data?
No. Glass Calculator collects no personal data, no usage
analytics, and no tracking information. All calculations are
performed locally on your device.
How do I view calculation history?
Switch to History mode from the mode picker. Your last 100
calculations are stored with timestamps. Tap an entry to reload
it, or clear all history with the trash button.
Is there a dark mode?
Yes. Tap the sun/moon icon in the top-right corner of the
display to toggle between light and dark themes.
🔒 Privacy Policy
Last updated: June 2026
Glass Calculator respects your privacy. This policy describes how
your information is handled when you use the app.
Data Collection
Glass Calculator does not collect, store, or
transmit any personal data. All calculations are performed
locally on your device. No analytics, crash reporting, or
tracking SDKs are included in the app.
Internet Access
The app only accesses the internet to fetch live currency
exchange rates from open.er-api.com when you use the Currency
converter. No device identifiers, usage data, or personal
information are sent with these requests.
Local Storage
Calculation history (up to 100 entries) is stored locally in
the app's memory and is not persisted to disk or shared with
any third party. Clearing the history removes all stored data.
Third-Party Services
The app uses open.er-api.com to fetch live
exchange rates. This service does not receive any personal
information from the app. No other third-party services are
used.
Children's Privacy
Glass Calculator is safe for all ages. It does not collect any
personal information from anyone, including children under 13.
