# GeniusLex: U.S. Code & CFR — Smarter Legal Research

> Electronic U.S. Code and CFR supplements for smarter legal research. (iPhone/iPad app by HYDL.)

- Source: https://appshunter.io/ios/app/geniuslex-us-code-and-cfr/id1464086869 (this page in markdown: same URL + `.md`)
- Developer: [HYDL](https://appshunter.io/developer/1459757393)
- Category: Reference, Business
- Price: Free with in-app purchases
- Rating: 4.40/5 from 29 App Store ratings · 23 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.0 · 14 MB
- Languages: American English
- Released: 2019-05-18
- Data updated: 2026-08-25
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/geniuslex-us-code-and-cfr/id1464086869/reviews.md

## What is GeniusLex?

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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Read more about our terms and privacy policy here: http://www.geniuslex.com/terms
http://www.geniuslex.com/privacy

## Key features

- Automated defined term identification
- Context-specific definition previews
- Cross-links between code and regulations
- Seamless inflation adjustment integration
- Rapid offline keyword search
- Offline section number search

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| GeniusLex Annual | $59.99 | per year |
| GeniusLex Biannual | $39.99 | per 6 months |
| GeniusLex Monthly | $9.99 | per month |


## Recent user reviews (10 of 23)

All indexed reviews: https://appshunter.io/ios/app/geniuslex-us-code-and-cfr/id1464086869/reviews.md

### 5/5 — This is what has been sought!!

*2023-04-02*

After looking into a multitude of disciplines finally something to make sense of it all! The roller coaster of emotions leading up to this was well worth it, seeing that now the foundation that has been laid will pay tremendous dividends 😁

### 1/5 — White screen

*2021-07-22*

I had such high hopes for this app. Every time I opened it all I got was a blank white screen. That’s all. I deleted and reinstalled several times and still…white screen.

**Developer response:** Thanks for your feedback. We would love to fix this. Can you share which iOS version you are using? Please message us at hydl@pm.me. We are unable to reproduce this issue on our end right now

### 2/5 — Expensive Subscription

*2021-02-15*

Nice interface but very expensive subscription for information that is available for no charge through the GPO.

### 1/5 — Expensive

*2019-11-17*

No content is available until you pay for it.

### 5/5 — Helpful

*2019-07-24*

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...

### 5/5 — Highly recommended

*2019-07-21*

This is an excellent app, particularly for other law students like myself who are studying tax. Title 26 is extremely complex but the contextual definitions here provided make it breeze to understand. I can't use any other electronic statute now.

### 5/5 — Regulatory affairs

*2019-07-19, version 2*

A very helpful resource for anyone who needs to check the CFR on the go, very sleek interface, very fast search by keyword. Please keep updating this

### 5/5 — Great app

*2019-07-18*

Contextual definitions for the U.S. Code is something I always wished could be available, and I am so glad to have finally found an electronic version of the statute that offers just that. I would very much appreciate the possibility to print/share specific sections with their corresponding definitions. Thank you!

### 5/5 — top legal app

*2019-06-20*

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.

### 5/5 — UCLALawStudent

*2019-06-16*

Great app especially for help navigating the tax code. I have made extensive use of cross-linked definitions to help me interpret the meaning of the text. I wish this was available also for State Laws.

## Frequently asked questions about GeniusLex

### What does GeniusLex do?

GeniusLex provides electronic supplements for the U.S. Code and Code of Federal Regulations. It automates repetitive tasks like identifying defined terms and cross-linking provisions, allowing users to focus on legal analysis.

### What are the key features of GeniusLex?

Key features include automated identification of defined terms with context-specific previews and links, seamless integration of inflation adjustments, automated cross-links between code provisions and regulations, and rapid offline search by keyword or section number.

### How does GeniusLex handle defined terms?

GeniusLex automatically recognizes defined terms within the U.S. Code and CFR. Users can click on a defined term to instantly view its meaning, with definitions tailored to the specific context in which they are used.

### Is GeniusLex available offline?

Yes, GeniusLex offers rapid offline search by keyword or section number. This allows users to conduct legal research without an internet connection, making it convenient for various study and work environments.

### What is the cost of GeniusLex?

The app is free to download and use with in-app purchases. This model allows users to access the core functionality and purchase specific features or content as needed, often at a lower cost than traditional paperback supplements.

## Version history (last 5 releases)

### 8 — 2019-11-12

bugfix

### 7 — 2019-10-07

bugfix

### 6 — 2019-10-02

bugfix

### 5 — 2019-09-25

bugfix

### 4 — 2019-09-11

new metadata

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*