# Protagoras — Classics Lexica — Greek and Latin dictionaries

> Digital Greek and Latin dictionaries with advanced search and cross-referencing. (iPhone/iPad app by Adrian Packel.)

- Source: https://appshunter.io/ios/app/protagoras-classics-lexica/id1116707290 (this page in markdown: same URL + `.md`)
- Developer: [Adrian Packel](https://appshunter.io/developer/517244370)
- Category: Reference, Education
- Price: Free
- Rating: 4.80/5 from 16 App Store ratings · 7 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.1 · 324 MB
- Languages: American English
- Released: 2016-06-05
- Data updated: 2026-06-09
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/protagoras-classics-lexica/id1116707290/reviews.md

## What is Protagoras?

Protagoras gives you fast and convenient access to no fewer than six indispensable classics reference works: the magisterial lexica by Liddell-Scott-Jones and Lewis and Short, the respective intermediate and elementary versions of the above works, and two specialized works (Autenrieth's Homeric Dictionary and Slater's Lexicon to Pindar). All six are included with the app free of charge, and feature powerful searching capabilities and the ability to view cited texts on the Perseus Digital Library.

- Browse any of the dictionaries painlessly by section, or search for entries directly. Search for Greek entries using the built-in Greek keyboard, Latin transliteration, or standard Beta Code.
- Viewing an entry will automatically bring up cross-referenced entries. (Note that this is not perfect yet.)
- View the text of cited passages on the Perseus Digital Library.
- Search any dictionary for words whose definition includes a specific English term.
- Bookmark entries you find yourself returning to frequently, and use the history feature to jump back to recently-viewed entries.

## Key features

- Six classics reference works
- Powerful searching capabilities
- Cross-referenced entries
- View cited texts on Perseus Digital Library
- Bookmark entries
- Search history

## Recent user reviews (7 of 7)

All indexed reviews: https://appshunter.io/ios/app/protagoras-classics-lexica/id1116707290/reviews.md

### 5/5 — Great app!

*2024-01-23*

Six dictionaries, easy and intuitive searching in Greek, Latin, and English—what else could you ask for? It’s a godsend!

### 4/5 — Very good, would be better if updated

*2020-10-29, version 1.3*

This is a very good tool but not as easy to use as comparable tools in for other languages, e.g. Pleco for Cantonese, because it has not been updated to allow the app to to run as a sidebar to the main screen. It would be useful, for example, to have Homer or Epictetus open on the main screen of an iPad, and to consult this tool in the sidebar

### 5/5 — Fantastic

*2020-05-25, version 1.3*

This is not the only app in the store which includes both LSJ and LS dictionaries. However, it is the only one with a clean and modern interface. It also supports all the latest iOS technologies and device screen resolutions. Big thanks to the developer!

### 5/5 — Easily the best app for Greek and Latin lexica.

*2018-07-16*

Greek Prof. here. Don’t waste your money on other dictionary apps. I recommend this app to my students and use it for myself because of its simple UI, impressive speed, and powerful search capabilities. While usefully made available offline, entries are also linked to Perseus texts for convenient browser viewing. The bookmarking and new export vocab app are wonderful tools for Flashcard making...I cannot believe this feature set is free!

Also: You can search for English headwords, which makes composing Ancient Greek on the fly a total breeze. Seriously though, this is not just a niche feature, as it has saved my goose numerous times when I need to find synonyms or am exploring networks of meaning or ancient discourses on x topic.

Finally: My research specialty is Pindar. I cannot express how singularly awesome it is that Slater’s full Lexicon is on here, as that text is both extortionately expensive and unwieldy to lug around to whatever remote island where I happen to be toiling away...

In sum: the dev must be commended for a serving such a pleasant and comprehensive lexical experience, which will meet the needs of both the student and the professional. 

Cheers,
KAS

### 2/5 — Excellent, but the most useful feature just vanished

*2017-10-03*

This app is about the best I’ve found for Latin and Ancient Greek lexical resources. It has been well worth the money.

However, a little more than two months ago, the English to Latin/Greek search feature just disappeared. I can no longer search for an English word and get back Latin and Greek lexical entries in which that English word appears. For me, this was in fact the best feature of the app. 

I’ve deleted and reinstalled more times than I care to count and I’ve tried changing all of the settings, even though they are few in number and completely unrelated to the problem. 

I want to give this app the five stars it used to deserve, but, until the problem is fixed, I  can only offer two.

**Developer response:** Thanks for the feedback. This happened because iOS 11 changed the way search bars were laid out, so that the buttons to select the type of search were actually appearing directly *behind* the search field (instead of below it as they should have been). I've just submitted a new/fixed version for review and it should hopefully be available within the next couple days.

### 5/5 — Really useful app

*2017-08-08*

This is a must download. The cross-referencing and ability to browse by entry make it at least as useful and sometimes more so than Logeion. Thanks developer!

### 5/5 — Fantastic!

*2016-06-24*

A great app with 6 great dictionaries with iPad Pro resolution support. There's nothing more to ask.

## Frequently asked questions about Protagoras

### What dictionaries are included in Protagoras?

Protagoras includes six indispensable classics reference works: Liddell-Scott-Jones (full and intermediate), Lewis and Short, their elementary versions, Autenrieth's Homeric Dictionary, and Slater's Lexicon to Pindar.

### How does Protagoras handle searching for Greek entries?

You can search for Greek entries using the built-in Greek keyboard, Latin transliteration, or standard Beta Code, offering flexibility for different user preferences.

### Can I view the original texts cited in the dictionaries?

Yes, Protagoras allows you to view the text of cited passages directly on the Perseus Digital Library, providing deeper context for entries.

### Does Protagoras have ads?

No, Protagoras is ad-free, ensuring an uninterrupted user experience for accessing its reference materials.

### What is the user rating for Protagoras?

Protagoras has an excellent rating of 4.8 stars based on 16 ratings, indicating high user satisfaction.

### Is Protagoras available on Android devices?

Protagoras is currently available for iPhone, iPad, and iPod devices. Compatibility with Android is not specified in the provided data.

### How often is Protagoras updated?

The latest version of Protagoras was released on October 1, 2019. Information on update frequency beyond this is not available.

### What is the age rating for Protagoras?

Protagoras has an age rating of 4+, making it suitable for a wide range of users interested in classical studies.

## Version history (last 4 releases)

### 1.3 — 2019-10-01

- Added support for Dark Mode.
- Added support for Dynamic Type.
- Changed icons to use SF Symbols.
- Added support for multiple windows on iPad—open an entry or lexicon in a new window by dragging it from its respective table of contents, or from the "matching entries" or bookmarks/history views.

### 1.2 — 2018-06-14

- iPad keyboard shortcuts have been added for a number of navigation- and entry-related actions.
- Now includes an "Export Vocabulary" option, accessible via the Share button, that will export the headwords and short definitions of recently-viewed (or bookmarked) entries to iCloud. These can then be imported into any flash-card program that accepts tab-delimited text files.
- Short definitions are now included for many more entries that lack straightforward glosses.

### 1.1 — 2017-10-08

- Updated for iOS 11.
- Minor adjustments to make some functionality more easily accessible.
- Cleaned up some garbled characters in Autenrieth and Slater.

### 1.0 — 2016-06-05

No release notes.

## Apps similar to Protagoras

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Logeion](https://appshunter.io/ios/app/logeion/id727860177) | 4.4 (68) | Free | Reference |
| [Pocket Greek Dictionary](https://appshunter.io/ios/app/pocket-greek-dictionary/id6446715748) | 5.0 (2) | Free | Reference |

## More apps by Adrian Packel

- [Grammaticus](https://appshunter.io/ios/app/grammaticus/id517244087)
- [Bellerophon](https://appshunter.io/ios/app/bellerophon/id1508038196)

All apps by Adrian Packel: https://appshunter.io/developer/517244370

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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 2026-06-09.*