OneCalc+ All-in-one Calculator

OneCalc+ All-in-one Calculator

Calculates everything. No ads.

490 ratings
106 reviews
$3.99

Details

  • Released
  • Updated
  • February 21, 2018
  • December 26, 2025

Features

OneCalc+ All-in-one Calculator screenshot #1 for iPhone
OneCalc+ All-in-one Calculator screenshot #2 for iPhone
OneCalc+ All-in-one Calculator screenshot #3 for iPhone
OneCalc+ All-in-one Calculator screenshot #4 for iPhone
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About

This premium calculator app offers over 40 tools for finance, everyday math, health, construction, and unit conversions. It includes standard, scientific, financial, and specialized calculators, all without ads.

Over 40 calculators and unit converters
Standard and scientific calculator modes
Financial calculators (interest, loans)
Unit and currency converter
Health (BMI, calorie) calculators
Construction estimation tools
Fraction and percentage calculations
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What users say

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What's New in OneCalc+ All

1.6

December 26, 2025

Bug fixes and minor improvements

User reviews

Best calculator

UPDATE: I really wish there was a pause in clearing the history. Like a button to confirm. I hit it on accident a couple times and had to redo a large amount of transactions. the Great product. I bought the ad free one, but apparently it does not erase the ad one when installed. I had two and kept seeing ads. Finally figured it out and deleted the ad one. Weird way to build it.
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Best calculator

Great product. I bought the ad free one, but apparently it does not erase the ad one when installed. I had two and kept seeing ads. Finally figured it out and deleted the ad one. Weird way to build it.

Very useful

Great easy to use calculator. With lots of bonus calculations you get included. No brainer don’t have to remember formulas, you get the answer you need with just inputting values. I like its simplicity and any highly recommend for quick one offs. Soulver is also good for more involved tallies with persistence
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Very good except one thing

I use this app a lot and would have rated 5 stars if the favorites list was sortable. Would be helpful to enable alpha sorting at a minimum. Would be even more helpful to have a manual ordering option.

No Ads, No Tracking

Great calculator. Modestly priced paid app. This app is what I would have expected as a default app on my iPhone. Sadly, Apple failed me there.

But this app is great. No ads. No tracking. (Again, talking about the paid version.) Just a good calculator app. Highly recommend.

Developer apps

User experience

🐞

Reported Bugs

3 issues

History not clearing properly

Bug

Paid version still showing ads

Bug

Keyboard not working on Mac devices

Bug

Requested Features

6 requests

Add more themes and color options

Feature

Implement a swap button for currency converter

Feature

Allow manual ordering of favorites list

Feature

Add a widget for quick access

Feature

Include time calculation functionality

Feature

Support for Bluetooth keyboard input

Feature

FAQ

What does the OneCalc+ app do?

OneCalc+ is a premium calculator app offering over 40 specialized calculators and unit converters. It covers finance, everyday math, health, construction, date and time calculations, and unit conversions, all without advertisements.

What are the key features of OneCalc+?

Key features include a standard calculator with advanced scientific functions, a comprehensive unit converter with currency exchange, financial calculators for loans and interest, health calculators like BMI, and specialized tools for construction estimation and fraction calculations.

How much does OneCalc+ cost?

OneCalc+ is the premium, ad-free version of the app. Based on its description as a premium version, it is a paid application, meaning there is an upfront cost to download and use it.

What devices is OneCalc+ compatible with?

The app is designed for iOS devices, specifically mentioning compatibility with iPhone and iPad. It is a must-have tool for these platforms.

What are some common use cases for OneCalc+?

Common use cases include calculating loan repayments, estimating construction materials, tracking BMI and calories, converting currencies and units of measurement, calculating discounts and tips, and performing complex scientific calculations.