# Calculator· — Big Basic Calculator

> A no-frills calculator with essential and advanced functions, customizable themes, and multitasking support. (iPhone/iPad app by Tim O's Studios, LLC.)

- Source: https://appshunter.io/ios/app/calculator/id554836784 (this page in markdown: same URL + `.md`)
- Developer: [Tim O's Studios, LLC](https://appshunter.io/developer/412839685)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 4.90/5 from 34,361 App Store ratings · 884 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 40 MB
- Languages: Russian, American English, Dutch, Danish, European Spanish, Italian, Korean, German (Germany), Polish, European Portuguese and 6 more
- Released: 2012-08-31
- Data updated: 2026-08-30
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/calculator/id554836784/reviews.md

## What is Calculator·?

A truly no-frills calculator with the perfect blend of features and simplicity.  Tired of getting lost in features you don’t use, but wish you had just a few more?  Try Calculator· today!

Features:
• The essentials—add, subtract, multiply, divide, percent
• Multiple color schemes
• Copy your result (double tap result to copy)
• Square, square root, and inverse functions on iPad landscape
• Split View for iPad so you can run two apps at once
• Apple Watch Support

This app contains auto-renewable subscriptions:
• Premium Access
• 1 month and 1 year durations available​

Limit one free trial per user. Charged through your iTunes account at confirmation of purchase. Your account will be charged within 24-hours prior to the end of the current period. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. You can manage your subscriptions and turn off auto-renewal from your Account Settings in iTunes after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that product, where applicable.
• Privacy policy: https://www.iubenda.com/privacy-policy/905866
• Terms of use: http://www.timosstudios.com/terms-of-use

You can follow the instructions on our website to change or cancel your subscription:
http://www.timosstudios.com/how-to-cancel-subscription-on-ios

## Key features

- Basic arithmetic operations
- Percentage calculations
- Multiple color schemes
- Copy results
- Square, square root, inverse functions
- iPad Split View support
- Apple Watch support

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Upgrade App | $0.99 | per month |
| Upgrade App | $4.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Upgrade App | $1.99 | one-time |


## What do users think of Calculator·?

Overall sentiment: positive

**Pros**

- 👍 Simple and easy to use
- 🚀 Quick and responsive
- 💡 Percentage function works well
- 👍 Large, clear buttons
- 👍 Straightforward, no-frills design

**Cons**

- 🔋 Frequent ads can be distracting
- 🐛 Occasional crashes or freezes
- 🔒 Lack of customization options
- 💡 No backspace/undo function
- 💡 Missing advanced features like memory

**Commonly reported bugs**

- Crashes when performing long calculations
- Freezes when opening the app
- Incorrect results for some complex calculations

**Most requested features**

- Add a backspace/undo button
- Implement a history/memory feature
- Provide more customization options
- Reduce frequency of ads

## Recent user reviews (10 of 884)

All indexed reviews: https://appshunter.io/ios/app/calculator/id554836784/reviews.md

### 2/5 — Needs some button rearrangement

*2026-08-13, version 5.3*

The location of the = and the +/- should buttons should be switched to conform to the standard of other online calculators. The current placement causes many user errors and the need to start over.

### 4/5 — Moites

*2026-05-11*

Je ne suis pas contre mais il faut des changement

### 5/5 — Terrific

*2026-03-18, version 5.3*

Easy, simple, no ads, just get it quick and easy. Thanks for not making it complicated

### 5/5 — Calculator

*2026-02-05, version 5.3*

Is fine for now. I want to make sure doesn’t have any pornographi adds . This is my 3rd attempt to download a simple calculator and is being so uncomfortable to realized they bring inappropriate adds. Let see if this one respect the consumers that we just want a simple calculator to add and subtract.

### 5/5 — Great

*2026-01-13, version 5.3*

Great

### 5/5 — Functioning

*2026-01-01, version 5.3*

Nice and very well functioning

### 5/5 — Basic Calculator

*2025-12-20, version 5.3*

Needed something easy to use that can replace parts of my memory which due to MS & Diabetes I have lost large portions. It works quickly & doesn’t cause me stress. Really helps. Thank you. Diane

### 4/5 — Good

*2025-12-03, version 5.3*

Good but not bad

### 5/5 — Increíble

*2025-10-25, version 5.3*

Es excelente la ayuda

### 1/5 — Another scam!

*2025-10-20, version 5.3*

Absolutely ridiculous; they (you) are now putting in an ad before you can “calculate”!  I’ve used the app for years but as of today, have downloaded another and will be using it!

## Frequently asked questions about Calculator·

### What are the main functions of this calculator app?

This app provides essential functions like addition, subtraction, multiplication, division, and percentage calculations. It also includes advanced features such as square, square root, and inverse functions, particularly on iPad in landscape mode. Users can easily copy their results by double-tapping them.

### Is this calculator app free to use?

The app offers a free version with core functionalities. However, it also provides auto-renewable subscriptions for 'Premium Access' with one-month and one-year durations. A free trial period may be offered, but any unused portion is forfeited upon purchasing a subscription.

### What devices is this calculator app compatible with?

This app is designed for iOS devices, including iPhones and iPads. It offers specific features like Split View support for multitasking on iPads and Apple Watch support for convenient calculations on your wrist.

### How can I manage or cancel my subscription?

You can manage your subscriptions and turn off auto-renewal from your Account Settings in iTunes after purchase. Instructions for changing or canceling your subscription are also available on the developer's website.

### Can I customize the appearance of the calculator?

Yes, the app offers multiple color schemes, allowing you to personalize the look of the calculator to your preference. This helps in making the interface more visually appealing and tailored to your needs.

## Version history (last 5 releases)

### 5.3 — 2025-05-02

- Bug fixes

### 5.2 — 2025-03-05

- Bug fixes

### 5.1 — 2025-03-04

- Bug fixes

### 5.0 — 2025-01-27

- Bug fixes

### 4.1 — 2022-03-09

- Bug fixes

## Apps similar to Calculator·

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Calculator₊](https://appshunter.io/ios/app/calculator/id398129933) | 4.7 (1,726,794) | Free | Utilities |
| [Calculator +](https://appshunter.io/ios/app/calculator-plus/id351815470) | 4.6 (10,020) | Free | Utilities |
| [Calculator⁼](https://appshunter.io/ios/app/calculator/id487127942) | 4.6 (358,262) | Free | Utilities |
| [Basic Calculator: Classic Calc](https://appshunter.io/ios/app/basic-calculator-classic-calc/id430271248) | 4.8 (3,192) | Free | Utilities |
| [Calculator #](https://appshunter.io/ios/app/calculator/id458535080) | 4.6 (35,876) | Free | Utilities |
| [Calculator HD Pro Lite](https://appshunter.io/ios/app/calculator-hd-pro-lite/id571121141) | 4.6 (51,312) | Free | Utilities |

## More apps by Tim O's Studios, LLC

- [Rocket Quest Lite](https://appshunter.io/ios/app/rocket-quest-lite/id478635438)
- [Calculator‰](https://appshunter.io/ios/app/calculator/id486645049)
- [Flashlight - Night Light Clock](https://appshunter.io/ios/app/flashlight-night-light-clock/id493794012)
- [Level-](https://appshunter.io/ios/app/level/id498652631)
- [Stopwatch‰](https://appshunter.io/ios/app/stopwatch/id505889167)
- [Stopwatch%](https://appshunter.io/ios/app/stopwatch/id505896404)

All apps by Tim O's Studios, LLC: https://appshunter.io/developer/412839685

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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 2026-08-30.*