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Percentage Calculator by Atlas

ai.atlasoperator.percentage
Tools Free Everyone Open on Google Play
0+
installs
—
0 ratings
2026-10-26
first release
2026-10-26
last update

Description

Tip, tax, discount and % change in one tap. Big keys, no ads, works offline.

Percentage Calculator by Atlas does percentages and nothing else. No ads, no account, nothing to buy. FOUR SCREENS, ONE JOB EACH • % of: what is 15% of 80? (12) • What %: 45 is what percent of 60? (75%) • % change: from 1,250 to 1,100 is down 12%, with the difference shown • + / − %: add sales tax, a tip or a markup, or take off a discount. 49.99 + 8.25% = 54.11; 80 − 25% = 60 EASY TO READ • Large numbers and a big keypad • The answer updates as you type, with the sum written out in plain words • ± key for negative numbers, Next to jump to the other box • High-contrast dark screen • Remembers what you last typed on each screen UNDER MORE • Price before tax or discount: find the original price from a total (108.25 with 8.25% tax was 100) • Margin and markup: selling price from your cost and the margin you want • Copy the result HONEST MATH • Clear messages instead of wrong answers when a sum would divide by zero (for example a % change from 0) • Percent change uses the size of the starting value, so the sign always shows whether the number went up or down, even with negative numbers • Answers show up to 4 decimal places; money screens round to 2 WORKS OFFLINE After the first open the calculator is saved on your phone and works with no signal. Made by AtlasOperator.ai, a small team building simple, single-purpose tools. Questions or a feature request? Email [email protected].

What's new

First release: percentage calculator with tax, tip and discount modes.

Details

Version1.0.0
Minimum Android version7.0
Reviews0
Developer websiteatlasoperator.ai
Developer contactson the Business plan
Collected2026-10-29

This data in the API

The full record in JSON costs 1 credit.

curl -H "X-API-Key: YOUR_KEY" \
  "https://apkapi.com/api/v1/app?id=ai.atlasoperator.percentage"