# King Notepad vs Compound Calculator

The clearest difference is price: King Notepad at Free against Compound Calculator's $0.99. King Notepad also leads on in-app purchases (none vs 3) and iOS requirement (12.0 vs 17.6). Compound Calculator's advantage is update cadence (every 5 days vs every 4 months). On ads and device support there is nothing between them.

King Notepad is free to download; Compound Calculator costs $0.99 up front. Compound Calculator sells 3 in-app purchases, starting at $2.99 per month. King Notepad asks for nothing beyond the download.

King Notepad ships an update every 4 months, Compound Calculator every 5 days. The most recent releases landed on September 25, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | King Notepad | Compound Calculator |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 35 MB | 5 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Muking OÜ](https://appshunter.io/developer/1813624785) | [乐祥 胡](https://appshunter.io/developer/1572365721) |

## What reviewers say

### King Notepad

[App page](https://appshunter.io/ios/app/king-notepad/id6745738889)

Capture ideas, to-do lists, and important information effortlessly with a modern, organized digital notebook. Features include categorization, favorites, automatic saving, and fast search.

**Highlights:** Organized notes with categories, Favorites and quick access, Automatic saving, Fast and smart search, Modern user-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


### Compound Calculator

[App page](https://appshunter.io/ios/app/compound-calculator-lite/id6749442265)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Compound Calculator - Pro 30days | $2.99 | per month |
| Compound Calculator - Pro 360days | $14.99 | per year |
| Compound Calculator Pro - lifetime | $19.99 | one-time |


## Frequently asked questions

### Is King Notepad free?

King Notepad is free to download, with no in-app purchases.

### Is Compound Calculator free?

Compound Calculator costs $0.99, and also offers in-app purchases.

### Do King Notepad or Compound Calculator have ads?

Neither King Notepad nor Compound Calculator shows ads.

### Which is updated more often, King Notepad or Compound Calculator?

King Notepad ships an update every 4 months, and Compound Calculator every 5 days. Most recently, King Notepad was updated on September 25, 2026 and Compound Calculator on October 10, 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.*