---
title: "OpenCalc - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "OpenCalc is a simple easy to use calculator that respects its users.  - 100% free and open source - No ads - No in app purchases - No tracking - No permissions requested - Calculations performed while"
---

# OpenCalc — United States
> A free open-source calculator

![OpenCalc App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple125/v4/ba/c2/80/bac280d2-3c39-8f30-bec2-69e27300403d/AppIcon-1x_U007emarketing-85-220-6.png/434x0w.png)

**Developer:** [Twelve 31 Labs](https://apptail.io/developer/twelve-31-labs-MITWvb)
**Category:** Utilities
**Rating:** 4.7/5 (37 ratings)
**Price:** Free
**Bundle ID:** com.twelve31labs.OpenCalc
**Store:** Apple App Store
**Country:** United States
**Version:** 1.11 (released 2018-07-11)
**Original Release:** 2018-07-28
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id1403173317)
**AppTail Page:** [https://apptail.io/app/opencalc-Ogjy/united-states](https://apptail.io/app/opencalc-Ogjy/united-states)

## OpenCalc Description
OpenCalc is a simple easy to use calculator that respects its users.

- 100% free and open source
- No ads
- No in app purchases
- No tracking
- No permissions requested
- Calculations performed while you type
- Ability to backspace

Finally a simple ad-free calculator app for iPhone and iPad.

## OpenCalc Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple115/v4/6d/c4/1c/6dc41c26-4f97-7ff8-05cc-f31cca4b83c4/pr_source.png/1242x2208.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple125/v4/15/f7/c9/15f7c9b5-484a-725b-dc31-5e60f6711342/pr_source.png/2208x1242.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple125/v4/d4/b8/6c/d4b86cdc-962c-c446-b74d-a4ed3436b821/pr_source.png/1242x2208.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/Purple125/v4/42/21/a0/4221a069-b627-e3ed-61a5-5fcd7533cc39/pr_source.png/1242x2208.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/Purple115/v4/d5/41/43/d5414397-950f-8ede-ba30-6d5934f62c87/pr_source.png/1242x2208.png)

## OpenCalc Rating Breakdown in United States
- 5 stars: 30 (81%)
- 4 stars: 5 (14%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 2 (5%)

## OpenCalc Reviews in United States

### ***** "Works great, no ads!"
Considering computers were invented to do math, it’s pretty silly the iPad does not come with a calculator. This does the job and has no ads — perfect!
-- The Day Doo, 2020-08-08

### ***** "Thanks, free no ads calculator"
Can’t believe that iPad doesn’t come with a calculator. All the other calculators I tried had bad ads and other issues. This one works well. Thanks 😀
-- namaste.ken, 2020-07-14

### ***** "No ads, free and open source, doesn’t sell your private data, is a calculator. Period."
Does what it says, fantastic calculator app that does everything with no gimmicks or strings attached.
-- AAA-112, 2020-07-08

### ***** "No BS"
Great to have an free iPad calculator app that just works! Sad that it’s so hard to find in the App Store, I had to search for it on the web to even discover the direct link.
-- megaman9, 2020-06-16

### ***** "Simple. No Ads. ‘Nuff said."
To whomever put in the time to develop this app, I appreciate you! There is no reason iPad shouldn’t come with a native calculator app; and there is no reason a calculator app should be riddled with ads. Happy matching, everybody.
-- Engineer-2.0, 2020-04-29

### ***** "Perfect!"
I was not happy when my iPad didn’t come with a calculator like my iPhone. I downloaded several but they all come with ads and in app purchases. I just wanted a basic calculator for convenience like my iPhone has. Thank you sooooo much for this app. It does everything I need and no annoying ads in it flashing at you. It’s perfect! Apple should pay you and instal it standard on iPads if they don’t like their own app.
-- Pooh18ast, 2020-04-04

### ***** "Thank you"
Much Love
-- DesertCat 505, 2020-04-03

### ***** "Private, Open Source, Simple"
It is also free! Finding a calculator that takes no data is so hard to find. So happy to find this one!
-- RedHat_Devo, 2020-02-18

### ***** "Good Calc"
Ad free and does the job, what more could you ask for?
-- Jen's Dad, 2020-01-18

### ****- "Nice ads free iPad calculator"
Thanks for ads free calc! I’m gonna give five star if status bar color is white, currently heard to see and it’ll be lovely if it's scale well in split-screen view
-- Uniqueof1990, 2020-01-04

[View all OpenCalc reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)





## OpenCalc Available In
- [United States](https://apptail.io/app/opencalc-Ogjy/united-states)
- [Australia](https://apptail.io/app/opencalc-Ogjy/australia)
- [Germany](https://apptail.io/app/opencalc-Ogjy/germany)
- [Canada](https://apptail.io/app/opencalc-Ogjy/canada)
- [Netherlands](https://apptail.io/app/opencalc-Ogjy/netherlands)
- [Austria](https://apptail.io/app/opencalc-Ogjy/austria)
- [Mexico](https://apptail.io/app/opencalc-Ogjy/mexico)
- [Norway](https://apptail.io/app/opencalc-Ogjy/norway)
- [United Kingdom](https://apptail.io/app/opencalc-Ogjy/united-kingdom)
- [Switzerland](https://apptail.io/app/opencalc-Ogjy/switzerland)
- [New Zealand](https://apptail.io/app/opencalc-Ogjy/new-zealand)
- [Russia](https://apptail.io/app/opencalc-Ogjy/russia)
- [Belgium](https://apptail.io/app/opencalc-Ogjy/belgium)
- [South Africa](https://apptail.io/app/opencalc-Ogjy/south-africa)
- [Belarus](https://apptail.io/app/opencalc-Ogjy/belarus)
- [Dominican Republic](https://apptail.io/app/opencalc-Ogjy/dominican-republic)
- [Ghana](https://apptail.io/app/opencalc-Ogjy/ghana)
- [Ireland](https://apptail.io/app/opencalc-Ogjy/ireland)

---

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