# Calc Bookmark vs Air Ruler

The clearest difference is price: Calc Bookmark at Free against Air Ruler's $0.99. Calc Bookmark also leads on in-app purchases (none vs 3). Air Ruler's advantage is ads (none vs shown). On device support and iOS requirement there is nothing between them.

Calc Bookmark is free to download; Air Ruler costs $0.99 up front. Air Ruler sells 3 in-app purchases, starting at $2.99 per month. Calc Bookmark asks for nothing beyond the download.

## The numbers

| Metric | Calc Bookmark | Air Ruler |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/calc-bookmark-save-website/id6473275392/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | — |
| Monetization | Ad-supported | — |
| Size | 8 MB | 7 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Sota Takasugi](https://appshunter.io/developer/1713502017) | [乐祥 胡](https://appshunter.io/developer/1572365721) |

## What reviewers say

### Calc Bookmark

[App page](https://appshunter.io/ios/app/calc-bookmark-save-website/id6473275392)

This app disguises itself as a calculator to secretly store your website bookmarks. It uses a calculator interface for both its icon and startup, making it difficult for others to discover your hidden links.

**Highlights:** Calculator disguise, Hidden bookmark storage, Password protection, Browser share integration, Secure website access

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

**In-app purchases:** none


### Air Ruler

[App page](https://appshunter.io/ios/app/air-ruler-objects-measure/id6763083628)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ruler Premium - 30days | $2.99 | per month |
| Ruler premium - yearly | $8.99 | per year |
| Ruler Premium - lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Calc Bookmark free?

Calc Bookmark is free to download, with no in-app purchases.

### Is Air Ruler free?

Air Ruler costs $0.99, and also offers in-app purchases.

### Do Calc Bookmark or Air Ruler have ads?

Calc Bookmark shows ads; Air Ruler does not.

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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.*