# 100% Percent Calculator — Tip, tax, discount & margin

> Natural language percentage calculator for discounts, tax, tips, and more. (iPhone/iPad app by Thomas Andre Johansen.)

- Source: https://appshunter.io/ios/app/100-percent-calculator/id1080209973 (this page in markdown: same URL + `.md`)
- Developer: [Thomas Andre Johansen](https://appshunter.io/developer/1080209972)
- Category: Utilities, Finance
- Price: Free with in-app purchases
- Rating: 5.00/5 from 3 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.0 · 5 MB
- Languages: Danish, Dutch, English, French, German, Italian, Japanese, Korean, Norwegian Bokmål, Portuguese and 6 more
- Released: 2016-02-03
- Data updated: 2026-08-15
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/100-percent-calculator/id1080209973/reviews.md

## What is 100% Percent Calculator?

The percent calculator that asks you the right question, instead of making you remember the formula.

WHAT YOU CAN CALCULATE
• Discount: how much off, or the final price after X% off
• Sales tax / VAT: add or remove tax from a price
• Tips: how much to leave, or what percentage someone tipped you
• Profit margin & markup: for shop owners pricing inventory
• "What percent is X of Y" and the rest of the basics

REAL-LIFE USE CASES
At the till deciding if "30% off" is actually a good deal. Adding VAT to a quote for a client. Splitting a restaurant bill after a couple of drinks (we've all been there). Pricing your own products with the right margin. The app is built around "what are you trying to figure out?" — not "here are all the buttons, good luck."

CONVERTERS
• Length and imperial ↔ metric, built in
• Live currency conversion with daily exchange rates (Pro)

PRO — ONE-TIME PURCHASE
Pro is a single purchase. No subscription, ever.
• Calculation history — tap any past result to copy it
• Custom default values per calculator (e.g. always pre-fill your usual tax rate)
• Live currency converter
• Unlimited favorite calculators (free users get one)
• Pick your accent color

Built and maintained by a one-person indie studio. Buying Pro once keeps the lights on.

## Key features

- Natural language calculations
- Discount calculations
- Sales tax and VAT addition
- Tip calculation
- Intuitive user interface
- Dyscalculia-friendly

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Medium | $1.99 | one-time |
| Small | $0.99 | one-time |
| Large | $2.99 | one-time |
| 100% Pro | $19.99 | one-time |


## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/100-percent-calculator/id1080209973/reviews.md

### 5/5 — Percent calculator

*2022-01-14*

I love this app.  Helps so much when I’m shopping for bargains!!

### 5/5 — Thomas the creator

*2020-10-10*

This guy is awesome he makes his own apps and I appreciate his work and dedication for the community here in the apps. This app is great especially since sometimes the shopping area where I live has no signal since it’s a new shopping area and built out in the middle of kinda no where. So it’s great to have something that responds fast and easy to use by following the prompts. This app is Make easy to understand. And I recommend it to anyone. Thank you Thomas and you gave everyone a gift by your app.  Your buddy is beautiful.

### 5/5 — 💯

*2016-03-02*

Nifty app.

## Frequently asked questions about 100% Percent Calculator

### What is 100% Percent Calculator used for?

100% Percent Calculator is designed to help users perform complex calculations involving percentages, such as calculating discounts, adding sales tax or VAT, and figuring out tips, all through natural language input.

### Is 100% Percent Calculator suitable for people with dyscalculia?

Yes, the app is specifically designed to assist individuals suffering from dyscalculia or a general apprehension towards numbers by simplifying complex calculations.

### What devices can I use 100% Percent Calculator on?

100% Percent Calculator is available for iPhone, iPad, and iPod devices.

### How often is 100% Percent Calculator updated?

The latest version, 2.0.1, was released on April 25, 2020. The app was originally released on February 3, 2016.

### What is the age rating for 100% Percent Calculator?

The app has an age rating of 4+, making it suitable for a wide range of users.

### Does 100% Percent Calculator have ads?

No, 100% Percent Calculator does not contain advertisements.

### What is the user rating for 100% Percent Calculator?

The app has a rating of 4.0 stars based on 4 user ratings.

### Does 100% Percent Calculator offer in-app purchases?

Yes, 100% Percent Calculator offers in-app purchases, though the core functionality is available for free.

## Version history (last 5 releases)

### 3.1.0 — 2026-08-09

Changing currencies is finally simple! Separate rows for what you're converting from and what you're converting to, so either one takes a single tap.

NEW
• Seven more currencies: Czech koruna, Hungarian forint, Icelandic króna, Israeli shekel, Malaysian ringgit, Philippine peso and Romanian leu.
• After each update, a short summary of what changed opens automatically. Read it again any time from Settings, or switch it off there.

IMPROVED
• The currency converter has its own From and To rows, so changing either side is one tap.
• Tap any currency code to search the full list by name or code.
• Travel Mode is down to the essentials: pick your two currencies and turn it on.

FIXED
• The Russian ruble and the Taiwan dollar have been removed. The daily exchange rates never covered them, so choosing either produced no result.

### 3.0.0 — 2026-07-30

Meet the Assistant: ask in plain English — "add 25% VAT to 199" — and get exact numbers, computed entirely on your iPhone. 3.0 is the biggest update ever.

NEW
• The Assistant answers tip, tax, discount and margin questions conversationally — private and fully on-device (iOS 26 with Apple Intelligence)
• Travel Mode: shopping abroad? See every price in your home currency too, even offline (Pro)
• Converters for length and imperial ↔ metric, plus live currency conversion with daily rates (Pro)
• History: every calculation saved automatically — pin, annotate and reuse (Pro)

REDESIGNED
• Receipt-style calculators you edit line by line, with a "what if?" scrubber to watch the price change live
• The whole app, now in 16 languages

PRO IS NOW ONE SIMPLE PURCHASE
• Subscriptions are gone. Pro is a single one-time purchase — buy once, keep it forever
• Already own Pro? You keep everything. No action needed

Built by one person — thank you for your support.

### 2.0.1 — 2020-04-25

Thank you for using the app, this week I've made some changes to keyboard behavior, and removed an annoying spinner. 

Features: 
- Tap the result of a calculation to copy it to the clip board
- The keyboard is now easier to dismiss, especially in the Favorites section

Bugs:
- Removed the spinner that never wanted to stop spinning.

### 2.0 — 2020-04-15

The app is brand new! No more ads! Save your favorite calculations for easy access and keep on rocking those calculations! Dark mode! Light mode!

### 1.4.0 — 2017-05-11

Bug fixes

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## More apps by Thomas Andre Johansen

- [Raceday Timer](https://appshunter.io/ios/app/raceday-timer/id1453844070)
- [Giftory: Gift Memory](https://appshunter.io/ios/app/giftory-gift-memory/id1524157033)
- [Tenfall: Number Match Puzzle](https://appshunter.io/ios/app/tenfall-number-match-puzzle/id6761820010)

All apps by Thomas Andre Johansen: https://appshunter.io/developer/1080209972

## Related topics

[percent calculator easy](https://appshunter.io/ios/topics/percent-calculator-easy)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-15.*