GeniusLex: U.S. Code & CFR 4+

Smarter Legal Research


Designed for iPad

    • 4.4 • 29 Ratings
    • Free
    • Offers In-App Purchases



The U.S. Code is an intellectually rich and rewarding puzzle, but piecing it together requires repetitive, mechanical tasks. Repeatedly flipping back and forth to the right page can deter students from reading and learning to parse the statute and regulations.

What if we could automate mechanical tasks so that you could focus on the intellectually rewarding aspects of statutory interpretation and analysis?

This is the idea behind our innovative electronic statutory supplements.

GeniusLex implements features law professors, students, and practitioners have wanted for decades, including automated identification of all defined terms (with previews and links to context-specific definitions), automated cross links between code provisions and regulations, seamless integration of inflation adjustments with the original text of the Code, and rapid offline search by keyword or section number--all for a fraction of the cost of traditional paperback statutory supplements.

Popup Definitions

The US Code includes thousands of defined terms. It is important for you to know the meaning of each of the defined terms to understand the meaning of the provisions that contain those defined terms.

Unfortunately, these terms are not always labeled as defined terms every time they are used. Even in cases where they are labeled as defined terms, you may need to flip back and forth to several locations in the code if you want to understand a certain provision.
To solve the problems associated with understanding defined terms, GeniusLex has provided the solution. All you have to do is to click on a defined term and you will be able to view its meaning instantly.

Definitions are specifically related to the context in which they are being used; therefore, they do not apply to all sections of the code. For instance, the definition of “property” in Section 317(a) of the Internal Revenue Code is different from its meaning in Section 351 of the same code.

GeniusLex automatically recognizes the context in which a definition has been used and connects you to the correct definition if one is provided in the same title.


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What’s New

Version 8


Ratings and Reviews

4.4 out of 5
29 Ratings

29 Ratings

ProtonKat ,

CFR 49

I was looking for CFR 49 and run into this app. This is hands down the best of its kind - very fast search by keyword which I use very frequently. I can easily navigate the complicated index of CFR 49 and get to the section of interest in no time. Recommended to anyone who like values speed and efficiency.

DrDoo ,


As a lawyer I appreciate getting information quickly. This app delivers: I can search my section of interest in no time and navigate back and forth very conveniently. I wish this had bookmarks though...

Fiona_77 ,

top legal app

This is a top legal reference app to interpret statutues without getting bogged down by difficult searches for correct definitions. The developers should include more options to save/bookmark/highlight/share specific sections though.

App Privacy

The developer, HYDL, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


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