# ShellRef vs Learn Binary

The clearest difference is price: Learn Binary at Free against ShellRef's $0.99. ShellRef's advantage is in-app purchases (none vs 1) and ads (none vs shown). On rating, ratings volume, device support and iOS requirement there is nothing between them.

Learn Binary is free to download; ShellRef costs $0.99 up front. Learn Binary sells 1 one-off in-app purchase. ShellRef asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for ShellRef against 5.0 for Learn Binary. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

## The numbers

| Metric | ShellRef | Learn Binary |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/shellref/id6759814118/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/learn-binary-bits-and-hex/id6789140513/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | — |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 19 MB | 26 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Bacon](https://appshunter.io/developer/1817531814) | [Tapricot](https://appshunter.io/developer/6789139047) |

## What reviewers say

### ShellRef

[App page](https://appshunter.io/ios/app/shellref/id6759814118)

This app provides an offline reference for Bash, Zsh, and terminal editors, mimicking a retro technical manual. It's ideal for quickly looking up commands, syntax, and scripting practices without needing an internet connection. Features include search, bookmarks, and customizable display themes.

**Highlights:** Offline Bash and Zsh reference, Terminal editor guides (Nano, Vim, Emacs), Quick command lookup, Searchable content, Customizable themes, Adjustable text size, Bookmarks

**Features:** macOS Compatibility

**In-app purchases:** none


### Learn Binary

[App page](https://appshunter.io/ios/app/learn-binary-bits-and-hex/id6789140513)

Master number-base conversion through interactive drills and visual aids. This app offers a gamified learning experience with a level-based progression and daily habit-building features to help users understand binary and hexadecimal systems.

**Highlights:** Number-base conversion drills (decimal, binary, hex), Tappable bit row and keypad input, Place-value breakdown explanations, Level-based progression system, Two's-complement representation, Bitwise operations practice, Offline functionality

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


## Frequently asked questions

### Is ShellRef free?

ShellRef costs $0.99, with no in-app purchases.

### Is Learn Binary free?

Learn Binary is free to download, with in-app purchases available.

### Which has better reviews, ShellRef or Learn Binary?

ShellRef and Learn Binary are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do ShellRef or Learn Binary have ads?

Learn Binary shows ads; ShellRef 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.*