# Objective Calculator — The only calculator with tabs!

> Multi-functional calculator app with tabs, drawing notes, and currency conversion. (iPhone/iPad app by Thiago Anderson Martins.)

- Source: https://appshunter.io/ios/app/objective-calculator/id1287000522 (this page in markdown: same URL + `.md`)
- Developer: [Thiago Anderson Martins](https://appshunter.io/developer/1287000521)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 4.70/5 from 19 App Store ratings · 29 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 10 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Brazilian Portuguese, Russian, Chinese (Simplified, China), European Spanish
- Released: 2017-09-25
- Data updated: 2026-07-07
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/objective-calculator/id1287000522/reviews.md

## What is Objective Calculator?

Regular Calculator with Tabs, Notepad, Scientific Calculator and Currency Converter!

Objective Calculator was made for you! From simple calculations, like the total price of a purchase, to advanced trigonometric functions, it can handle it all!
This is the only calculator app with tabs, and everyone loves it! You can calculate several different things at the same time, or break down a single problem without losing any number. You can even give a title to your tabs, so you can easily find it later.
Objective Calculator is the only calculator app with the ability of taking drawing notes! Use your Apple Pencil or finger to record reminders or important informations about your calculations.
The best iOS technologies are implemented in this app, like 3D Touch, Drag and Drop, Haptic Feedback, Apple Pencil support and more. Get the most out of your latest device!

Features:
• Real-time Problem Solving - no need for an “equals” button. Objective Calculator gives the result as you type
• Tabs - innovative and useful for everyone
• Drawings - Add drawings to your tabs as notes or reminders! Supports Apple Pencil!
• Currency Converter - 33 currencies available
• Annotations - give titles to your tabs, you can even use emojis! 
• Advanced History - search, reuse, edit, drag, email or delete history items
• Color Themes - several beautiful color themes available
• Real-time Editing - easily replace numbers, operators or functions
• Normal Mode - hide all scientific buttons if you don’t use them
• Complete Portrait - have access to all buttons, even on portrait mode
• Multitasking - Slide Over and Split View for iPad
• Drag and Drop - available for iPad and iPhone
• 3D Touch - useful quick actions on supported devices
• External Keyboard Support - over 30 keyboard shortcuts
• Dark and Light Mode - the whole interface adjusts to your current color theme
• Fast App Launch - the app launches very quickly, even on older devices
• Great Performance - it responds to every interaction without annoying lags
• Very easy to use
• Beautiful, modern and clean interface, without advertisements

## Key features

- Tabbed interface for multiple calculations
- Scientific calculator functions
- Drawing and annotation notes
- Real-time problem solving
- Currency converter with 33 currencies
- Advanced history management
- Color themes and dark/light mode

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Objective Calculator Pro | $1.99 | one-time |


## Recent user reviews (10 of 29)

All indexed reviews: https://appshunter.io/ios/app/objective-calculator/id1287000522/reviews.md

### 5/5 — Add it up

*2026-06-03, version 2.2.6*

Works well

### 1/5 — Не конвертирует руб в usd

*2023-08-03*

Покупал специально этот калькулятор чтобы воспользоваться конвертором , конвертировать рубли в доллары и евро , работает некорректно выдает информацию несоответствующую действительности , напрасно потраченные деньги!

### 4/5 — Es muy buena! Pero podría ser mejor

*2023-04-08*

Es fácil de usar, no ha tenido problemas, las pestañas ayudan mucho es nuevo y es un gran apoyó.  Vi que la versión PRO tiene convertidor de moneda, si tuviera también convertidor de unidades en la versión PRO. sería de gran apoyó .

It's easy to use, hasn't had any problems, the tabs help a lot, it's new and it's great support.  I saw that the PRO version has a currency converter, if only it had a unit converter in the PRO version.  it would be of great support!

### 4/5 — Me encanto!

*2022-07-19*

Tiene varios diseños, muy útil.. Me gustaría que actualice, que agregaran para iPhone 13 Pro Max Centro de control y bajar la aplicación Watch serie 6, por favor!! Gracias!

### 5/5 — Muito bom

*2022-07-06*

Poderia ter widgets

### 1/5 — El no traer botón = no la hace tan funcional.

*2021-11-28*

No tiene un manual de uso, no trae botón igual, usa demasiado espacio y no la veo nada funcional. Es un fraude, no la compren, no vale la pena, hay otras menores.

### 5/5 — Súper

*2021-04-08*

Me sorprendió la facilidad de uso y las opciones para hacer todo tipo de operaciones, súper recomendada

### 4/5 — I have to rate the app to get a theme

*2021-03-07, version 2.2.6*

The app seems cool enough

### 4/5 — Needs an ‘ = ‘ button.

*2021-01-30*

Hi, I purchased the Pro version because I needed a calculator and was a little disappointed with the lack of an = button. I know it’s kinda silly since there isn’t much need of one, but I’m used to having one and would be nice to have the option for those who want it.

### 5/5 — Me encanto

*2020-09-02*

Sin publicidad, con varios diseños, muy útil. Me gustaría que agregaran widgets para iOS.

## Frequently asked questions about Objective Calculator

### What does the Objective Calculator app do?

The Objective Calculator app is a versatile tool that goes beyond basic calculations. It features a unique tabbed interface allowing users to manage multiple calculations at once, a scientific calculator for advanced functions, and a built-in currency converter supporting 33 currencies. It also allows for drawing notes and annotations directly within the app.

### What are the key features of Objective Calculator?

Key features include its innovative tabbed interface for simultaneous calculations, real-time problem solving without an 'equals' button, the ability to add drawing notes and annotations with Apple Pencil support, a currency converter, advanced history search and editing, and various customization options like color themes and dark/light mode.

### Is Objective Calculator free to use?

The app is free to download and use, offering a range of core functionalities. However, it does have in-app purchases, suggesting that some advanced features or customization options might be available for purchase.

### What devices is Objective Calculator compatible with?

The app is designed to leverage the latest iOS technologies and is compatible with a range of Apple devices. It supports features like 3D Touch, Drag and Drop, Apple Pencil, Slide Over and Split View for iPad multitasking, and external keyboard support, indicating broad compatibility with modern iPhones and iPads.

### How can I use the tabbed feature in Objective Calculator?

The tabbed interface allows you to perform multiple calculations independently or break down complex problems without losing your progress. You can create new tabs for different tasks, title them for easy identification, and switch between them seamlessly, enhancing organization and efficiency.

## Version history (last 5 releases)

### 2.2.6 — 2020-08-09

Translation and functionality improvements suggested by a user from France! Thank you very much!

### 2.2.5 — 2020-04-20

• Fixes a bug that made the app close when playing music in the background
• Fixes a bug that didn't let some drawings to be saved in the history
• Makes Haptic Feedback more consistent
Thanks for choosing Objective Calculator! Don't forget to leave a review here on the App Store!

### 2.2.4 — 2020-02-12

Minor bug fixes and interface improvements

### 2.2.3 — 2020-01-25

• History screen interface improvements
• Bug fixes and performance improvements

What’s new in 2.2.2:

HUGE update!
• Drawings! Now you can add drawings as annotations! (Supports Apple Pencil)
• New Premium and Free Color Themes!
• Bug fixes, performance and stability improvements
Thanks for choosing Objective Calculator! We’re already thousands around the world! If you enjoy using this app, please don’t forget to leave a nice reveal here on the App Store!

### 2.2.2 — 2020-01-16

HUGE update!
• Drawings! Now you can add drawings as annotations! (Supports Apple Pencil)
• New Premium and Free Color Themes!
• Bug fixes, performance and stability improvements
Thanks for choosing Objective Calculator! We’re already thousands around the world! If you enjoy using this app, please don’t forget to leave a nice reveal here on the App Store!

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All apps by Thiago Anderson Martins: https://appshunter.io/developer/1287000521

## Related topics

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

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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 2026-07-07.*