# The Calculator vs CALKING

The clearest difference is price: The Calculator at Free against CALKING's $2.99. The Calculator also leads on update cadence (every 6 days vs every 3 weeks). CALKING's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.

The Calculator is free to download; CALKING costs $2.99 up front. The Calculator sells 3 in-app purchases, starting at $4.99 per month. CALKING asks for nothing beyond the download.

The Calculator ships an update every 6 days, CALKING every 3 weeks. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | The Calculator | CALKING |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/the-calculator-notes-and-units/id6745772251/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 3 weeks |
| Monetization | **Freemium** | Paid |
| Size | 17 MB | 4 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [YiDe Liu](https://appshunter.io/developer/1813803093) | [BYKING INC.](https://appshunter.io/developer/341311384) |

## What reviewers say

### The Calculator

[App page](https://appshunter.io/ios/app/the-calculator-notes-and-units/id6745772251)

This app combines a powerful calculator with a note-taking feature, allowing you to document calculations as you perform them. It also offers unit and currency conversions, with customizable appearance and settings.

**Highlights:** Integrated notepad for documenting calculations, Unit and currency conversion, Basic, scientific, and conversion calculators, Customizable appearance (light, dark, black), Adjustable number formats and decimal places, History with attachable notes

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $4.99 | per month |
| Premium | $29.99 | per year |
| Premium | $9.99 | one-time |


### CALKING

[App page](https://appshunter.io/ios/app/calking/id6763190963)

This app combines a calculator with a notepad, allowing users to save numbers and calculation results instantly. Organize your data with colorful, sticky-note style memos and easily retrieve information for various tasks like budgeting and expense tracking.

**Highlights:** Save calculations instantly, Sticky note style memos, Color-coded organization, Calculate totals by color, Three separate memo boards, Add custom notes to memos

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

**In-app purchases:** none


## Frequently asked questions

### Is The Calculator free?

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

### Is CALKING free?

CALKING costs $2.99, with no in-app purchases.

### Do The Calculator or CALKING have ads?

Neither The Calculator nor CALKING shows ads.

### Which is updated more often, The Calculator or CALKING?

The Calculator ships an update every 6 days, and CALKING every 3 weeks. Most recently, The Calculator was updated on October 24, 2026 and CALKING on October 28, 2026.

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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.*