# FutureCalc: ergonomic calculator for single-handed use

> Ergonomic calculator for single-handed use with instant results and customizable layouts. (iPhone/iPad app by Hovik Melikyan.)

- Source: https://appshunter.io/ios/app/futurecalc-ergonomic-calculator-for-single-handed-use/id1078127612 (this page in markdown: same URL + `.md`)
- Developer: [Hovik Melikyan](https://appshunter.io/developer/869273898)
- Category: Utilities, Productivity
- Price: Free
- Rating: 4.00/5 from 2 App Store ratings · 10 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.2 · 4 MB
- Languages: American English
- Released: 2016-02-03
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/futurecalc-ergonomic-calculator-for-single-handed-use/id1078127612/reviews.md

## What is FutureCalc?

FutureCalc is an ergonomic calculator, possibly the first of its kind, specifically designed for single-handed use. All buttons are accessible for the thumb without repositioning the phone or supporting it with the other hand.

Two layouts are available to choose from: we call them Radial and Concave. Each can be flipped for either right or left hand use.

Features:

- No equal sign: the results are displayed "on the fly", so no need for an extra tap.

- The basic set of arithmetic operations: addition, subtraction, multiplication, division; the internal format is 64-bit floating point.

- Flip the keypad for use with either left or right hand using the button with two arrows.

- Switch the designs using the settings button at the bottom.

- There is only one CLEAR button: tap once to delete a digit, or tap and hold for a second to reset the calculator.

- Copy/paste supported: tap on any of the displayed numbers; the editable number allows copy and paste, while others are only copyable.

- Maximum length for arguments in this version is 16 digits.

- Works on all iPhones starting from 4S. The 6/6S design is adjusted so that the physical size of the buttons is the same.

Enjoy your numbers!

## Key features

- Single-handed ergonomic design
- Two customizable button layouts (Radial, Concave)
- Left/right-handed flip functionality
- Instant results, no equals sign needed
- Flexible clear button (single digit or reset)
- Copy/paste for numbers
- Supports up to 16-digit arguments

## Recent user reviews (10 of 10)

All indexed reviews: https://appshunter.io/ios/app/futurecalc-ergonomic-calculator-for-single-handed-use/id1078127612/reviews.md

### 4/5 — New Update earns 4 Stars!

*2016-04-03*

Multiplication (X) function is now easy to find making this my go to calculator. Thanks for listening! Want 5 stars? Allow the user to assign the location for each function to suit their personal preferences.

### 3/5 — Um

*2016-03-01, version 1.1*

Know probably sounds a dumb question and is maybe starring me in the face but where is the multiply button?

### 4/5 — Well Done

*2016-02-12*

It's a simple, and therefore limited calculator, but it's whole point is in its innovative design and how it allows ease of single hand, single thumb use. Nice work.

### 5/5 — La fantasia che diventa praticità

*2016-02-12*

Geniale! A prima vista sconvolge per la sua semplicità.
Finalmente una calcolatrice elegante e veramente innovativa.
Essenziale, non ha pretese di calcolatrice scientifica o altro. Per l’uso comune molto pratica.
È anche rispettosa dell’uso da parte di chi è mancino.
Aggiungerei solo un tasto per la % e la possibilità di scegliere il colore.

### 2/5 — Idea geniale ma mancante!

*2016-02-12*

Il layout della calcolatrice è geniale.
Davvero si riesce con una sola mano.
Ma è mancante di alcune funzioni importantissime, su tutte il calcolo della percentuale %.
Quando avrà anche questa funzione sarà da 5 stelle.
iPhone 5, 9.2.1

### 5/5 — Semplice funzionale pratica

*2016-02-11*

Complimenti per l'idea   Molto spesso ci può trovare a dover scrivere e digitare sulla calcolatrice. Impossibile se non poggiando il telefono magari su superfici poco affidabili
Funzioni essenziali. Rapida e piacevole

### 2/5 — Error in Calculation

*2016-02-09*

I like the concept and ease of use. The first ever calculation I did resulted in a error 😕. Try it:
25*5 + 49 x 0.8 / 2

### 3/5 — Neat App!

*2016-02-09*

Has potential. Easy to use. Needs an RPN option.

### 5/5 — Excellent app

*2016-02-08*

Wish I could make this my default app when swiping up from the bottom. What a cool idea. 
Need to get used to no = button. But love the tape function built it.  Keep designing useful stuff. Kudos to the developers!!

### 1/5 — No multiply function

*2016-02-08, version 1.0*

There's no multiply function.

## Frequently asked questions about FutureCalc

### What is FutureCalc?

FutureCalc is a calculator app specifically designed for comfortable single-handed use on iPhones and iPod Touches. It features ergonomic button layouts and instant results without needing to press an equals sign.

### Can FutureCalc be used with my left hand?

Yes, FutureCalc offers a flip feature that allows you to switch the keypad layout for use with either your left or right hand. This ensures optimal comfort for all users.

### How does FutureCalc display results?

FutureCalc displays results 'on the fly' as you input numbers and operations, eliminating the need for a separate equals sign. This provides a more streamlined calculation process.

### What is the clear button functionality in FutureCalc?

The clear button in FutureCalc has a dual function. A single tap deletes the last entered digit, while tapping and holding for a second resets the entire calculator.

### Does FutureCalc support copy and paste?

Yes, FutureCalc supports copy and paste for numbers. You can tap on displayed numbers to copy them, and the editable number field also allows for pasting.

### What is the maximum number of digits FutureCalc can handle?

In this version, FutureCalc supports a maximum of 16 digits for arguments. This should be sufficient for most everyday calculations.

### Which devices are compatible with FutureCalc?

FutureCalc works on all iPhones starting from the 4S and is also compatible with iPod Touch devices. The design is adjusted for optimal button size on various models.

### How often is FutureCalc updated?

The latest version of FutureCalc is 1.2, which was last updated on March 31, 2016. Future updates may be released to improve functionality or compatibility.

## Version history (last 3 releases)

### 1.2 — 2016-03-31

This app has been updated by Apple to display the Apple Watch app icon.

- Replaced the multiplication symbol • with × (previously, some users couldn't find the multiplication function and left very negative reviews here. Well...)
- iOS 8 and 9 are now supported

### 1.1 — 2016-02-15

- Added an alternative layout called "Concave". To switch between the two designs, the old and the new one, tap on the settings icon at the bottom.

- Hold the CLEAR button for a second to reset the calculator (previously was double tap).

- The copy/paste menu is now accessible via a single tap on any of the numbers (previously was double tap).

### 1.0 — 2016-02-03

No release notes.

## Apps similar to FutureCalc

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Calculator83](https://appshunter.io/ios/app/calculator83/id891194491) | 5.0 (4) | Free | Utilities |
| [AGC - Linking](https://appshunter.io/ios/app/agc-linking/id6711337949) | 1.0 (1) | Free | Utilities |
| [Unix Time is Readable](https://appshunter.io/ios/app/unix-time-is-readable/id1659573028) | — | Free | Utilities |
| [discount calculator - 1Tap](https://appshunter.io/ios/app/discount-calculator-1tap/id6742233623) | — | $0.99 | Utilities |
| [Thumb calculator](https://appshunter.io/ios/app/thumb-calculator/id6499389948) | — | Free | Utilities |
| [Calculator & Note](https://appshunter.io/ios/app/calculator-and-note/id1601048977) | 5.0 (3) | Free | Utilities |

## More apps by Hovik Melikyan

- [Magnetola - Vintage Cassette Player with Sound Softener](https://appshunter.io/ios/app/magnetola-vintage-cassette-player-with-sound-softener/id1027234156)
- [FutureDialer: ergonomic dialer for single-handed use, with fast T9 contact search](https://appshunter.io/ios/app/futuredialer-ergonomic-dialer-for-single-handed-use-with-fast-t9-contact-search/id1080190943)
- [Futuriana: Pentix-like puzzle with unique, intuitive way of playing](https://appshunter.io/ios/app/futuriana-pentix-like-puzzle-with-unique-intuitive-way-of-playing/id1085441981)

All apps by Hovik Melikyan: https://appshunter.io/developer/869273898

## Related topics

[ergonomic](https://appshunter.io/ios/topics/ergonomic)

---

*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 2026-06-01.*