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Black’s Law Dictionary 10th Ed

by Thomson Reuters

  • Reference
  • Paid
  • Zombie
View on the App Store
Rating
2.8
23 ratings · US storefront
Top 91%among 83 Reference apps
Last update
Apr 15, 2020
Version 1.7.0
Size
127 MB
Category
Reference
Tracked since
Oct 9, 2026

Estimated revenue

A model estimate with a likely range, not a reported figure.

No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.

How this estimate is made

Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.

Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.

Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.

Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.

Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.

Full method

Screenshots

As shown on the App Store listing.

About this app

Text from the App Store listing.

For more than a century, Black’s Law Dictionary® has been the gold standard for the language of law. Today, it’s the most widely cited law book in the world. By Editor in Chief Bryan A. Garner, the 10th Edition is the most comprehensive law dictionary ever published. It contains more than 50,000 terms, including more than 16,000 new definitions.

Features

  • More than 50,000 terms, including 7,500 more terms than the 9th Edition
  • More than twice as many sources quoted and cited than the 9th Edition
  • Earliest usage dates in English-language contexts provided for nearly all terms – the only legal dictionary with this feature
  • More than 1,000 definitions of law-related abbreviations and acronyms
  • Trusted authority – every term has been reviewed for accuracy by nearly 300 attorneys from across the country
  • Pronunciation guidance, including audio pronunciations for over 7,000 terms
  • Thoroughly reviewed and edited Latin maxims, with 900 new maxims added

New in the 10th Edition

  • “Did You Mean” search functionality

o spell checker functionality provides alternative suggestions for misspelled search terms

  • Define in Black’s

o define words within definition text by selecting a word and tapping Define in Black’s

  • Enhanced linking

o link to subentries and cross-references from a search result, within a definition, and between definitions
o link to Westlaw® content via the WestlawNext® iPad® app

  • Word of the Day

o audio pronunciation available on all Word of the Day entries
o link to full definition from Word of the Day tab
o history slider on Word of the Day tab provides quick navigation to previous Word of the Day entries

  • History

o track viewed definitions and sort by date or alphabetical order

  • Intuitive structure, formatted for easy reading and navigation

What’s new

Release notes for the latest version, as written by the developer.

v1.7.0
  • iOS 13 Compatibility
  • General content updates and bug fixes

Rank history

Daily position in the Liberia charts. #1 is at the top.

Best rank
#3
Current rank
#3
Days charting
7 of 7

On the charts today

Small & simple score

How realistic it is for a small team to build something like this.

81/100

Not flagged as small & simple

  • Developer size40% · 25

    Developer: 3 apps on the charts

  • Audience size100% · 20

    Ratings: 23

  • App size60% · 10

    Size: 127 MB

  • Price model100% · 15

    Price model: paid

  • Demand proof100% · 30

    Best rank #3, 29 countries

An indicator, not a fact. We can't see team size. Calculated Oct 24, 2026 · method i2

How the score works

Version history

  • 1.7.0LatestReleased Apr 15, 2020