# Calculator Keyboard vs Nirman Sathi

The clearest difference is in-app purchases: Nirman Sathi at none against Calculator Keyboard's 2. Calculator Keyboard's advantage is device support (3 vs 1) and iOS requirement (14.0 vs 26.1). On price and ads there is nothing between them.

Both are free to download. Calculator Keyboard sells 2 in-app purchases, starting at $0.99 per month. Nirman Sathi asks for nothing beyond the download.

## The numbers

| Metric | Calculator Keyboard | Nirman Sathi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (493 ratings)](https://appshunter.io/ios/app/calculator-keyboard-calku/id1546065778/reviews)** | — |
| Number of ratings | **493** | — |
| Positive reviews | 76.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 3 MB | 22 MB |
| Requires iOS | **14.0** | 26.1 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Supagarn Pattananuchart](https://appshunter.io/developer/1488328374) | [Mani Pandit](https://appshunter.io/developer/1696063538) |

## What reviewers say

### Calculator Keyboard

[App page](https://appshunter.io/ios/app/calculator-keyboard-calku/id1546065778)

This app turns your keyboard into a powerful calculator, allowing you to perform calculations directly within any application. Avoid switching apps and copying numbers by calculating on the go, whether you're texting, taking notes, or browsing.

**Highlights:** Calculate within any app, Supports Dark Mode, Customizable decimal points, Scientific calculator functions, Calculation history access, Keyboard feedback options

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calku PRO (1 Month) | $0.99 | per month |
| Calku Pro - Lifetime | $5.99 | one-time |

**What reviewers like**

- 👍 Very useful application
- 🚀 Handy calculator within keyboard
- 💡 Innovative idea for an app
- 👍 Easy to use
- 🔒 Respects user privacy

**What reviewers complain about**

- 🐛 Cannot delete the app
- 🐛 Buggy at times
- 🐛 Non-standard division/multiplication symbols
- 🐛 Incorrect calculations
- 🐛 Doesn't work on all apps initially

**Reported bugs**

- Cannot delete the app
- App is buggy sometimes
- Non-standard division and multiplication symbols not recognized by other apps
- Incorrect calculations (e.g., 3.10 / 1000 = 0)
- App only works on Apple Mail and Notes initially

**Requested features**

- Add thousands separator for numbers
- Haptic feedback on key presses
- Option to hide computation in text box
- History button on main page
- Option for standard multiplication and division


### Nirman Sathi

[App page](https://appshunter.io/ios/app/nirman-sathi/id6808203207)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Calculator Keyboard free?

Calculator Keyboard is free to download, with in-app purchases available.

### Is Nirman Sathi free?

Nirman Sathi is free to download, with no in-app purchases.

### Do Calculator Keyboard or Nirman Sathi have ads?

Neither Calculator Keyboard nor Nirman Sathi shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*