Comparison

Fastdic vs Avestan Lexicon

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Fastdic

This app offers comprehensive English/Persian translation and dictionary services, supporting over 250,000 words with online and offline access. It also includes AI-powered writing assistance, voice and image translation, and pronunciation guides.

Highlights
  • English/Persian Dictionary & Translator (Online & Offline)
  • AI Grammar Improvement & Paraphrasing
  • Voice and Image Translation
  • Audio Pronunciations (American & British)
  • Synonyms, Antonyms, and Word Families
  • Number to Word Conversion
  • Word of the Day
Features
Read full description

We proudly provide service to more than 7 million active users each month. Features: - AI - Improve grammar, paraphrase, expand or summarize text and change tone/style of writing. - AI Translator - Persian, English, German, Italian, Spanish, French, Arabic, Turkish and Russian - Tools tab - All AI tools in one place, plus a CEFR test to find your English vocabulary level - Flashcards - Learn and remember words with smart review; make decks from your folders, history, categories or the word of the day - Camera translator - Point your camera at any text and see the Persian translation live on screen, translate a photo with the translation shown right on it, or use object mode to learn the names of things around you - English to Persian/Farsi and vice-versa Dictionary & Translator (Online & offline) - More than 250,000 words - More than 100,000 example sentences - Sync your favorite and history words - The ability to convert numbers to words. (Enter any number or decimal number to see both English and Persian numbers in letters) - Synonyms and antonyms - English to English Dictionary - Online and offline English audio pronunciations with both American & British accents (For words and sentences) - Part of speech (POS) - British & American English phonetics - Search different forms of nouns and verbs (Simple past tense, Past participles, Irregular verbs, Third person singular, Present participle, Plural) - History of searched words - Word Family - Formal/informal labels - Categorized words - List of categorized words for easy access - Favorites list - Create custom folders with your favorite words - Word sharing - Easily share a new word or definition you have just learned with your friends - Word of the day - Learn a new word, every day. Add the widget to your Home Screen and Lock Screen, with quick actions to search, open the camera translator, the AI translator or your flashcards in one tap - Voice translator - Find an entry when you do not know how a word is spelt - Share Extension - The users with a subscription can translate any words or sentences in any application such as Safari and Chrome by using Share button and selecting Fastdic - Light and Dark mode - No internet connection is required to use the dictionary (The translator requires internet) - Fast and simple And more incredible features To remove ads or gain access to additional features, visit the app's settings section. **The subscriptions do not auto-renew; they work as a one-time purchase.**

About

Avestan Lexicon

This app provides an offline resource for studying the Avestan language and reading the Avesta, the sacred texts of Zoroastrianism. It features a comprehensive dictionary, full scripture corpus, and study tools, all without requiring an internet connection or displaying ads.

Highlights
  • Offline Avesta reading
  • Avestan language dictionary
  • Roman transliteration and English translation
  • Word and verse of the day
  • Bookmarking and progress saving
  • Ad-free and private experience
Features
Read full description

Avestan Lexicon is a complete, offline companion for reading the Avesta and studying the Avestan language — the sacred tongue of Zoroastrianism. THE FULL AVESTA, OFFLINE Read the entire corpus with no internet connection: the Yasna, the Gathas of Zarathustra, the Visperad, the Vendidad, the Yashts, the Khordeh Avesta, and the Fragments. Every verse is presented in Roman transliteration, in the original Din Dabireh (Avestan script), and in English translation, side by side. A LIVING DICTIONARY Look up thousands of Avestan words with translations, definitions, grammatical notes, and etymological detail. Search is diacritic-insensitive so you never have to hunt for the right accent. Tap any word in a verse to see its meaning instantly. BUILT FOR STUDY - Browse the dictionary A–Z or search in Avestan or English - Curated word collections that group vocabulary by theme - Word of the Day and Verse of the Day - Bookmark verses and words, and pick up where you left off - Clean, book-like typography designed for long reading COMPLETELY OFFLINE. COMPLETELY PRIVATE The entire dictionary and scripture library are bundled inside the app. There is no account to create, no sign-in, no ads, and no tracking. Nothing you read or search ever leaves your device. It works the same on a plane, in an archive, or anywhere with no signal. For students, scholars, Zoroastrians, and anyone drawn to one of the world's oldest religious traditions.

Screenshots

Fastdic4 screens
Avestan Lexicon4 screens

Verdict

The call

The clearest difference is in-app purchases: Avestan Lexicon at none against Fastdic's 6. Avestan Lexicon also leads on ads (none vs shown) and rating (5.0 vs 4.5). Fastdic's advantage is ratings volume (11K vs 4). On price, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Fastdic sells 6 one-off in-app purchases. Avestan Lexicon asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Avestan Lexicon holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Fastdic has 11K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 76% of Fastdic's written reviews are positive against 100% of Avestan Lexicon's.

UpkeepUpdate frequency

Fastdic ships an update every 5 weeks, Avestan Lexicon weekly. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

Scorecard7 real differences · 3 level
Fastdic versus Avestan Lexicon: the parameters behind the verdict, then further details
ParameterFastdicAvestan Lexicon
PriceFreeFree
Rating4.5 (11K ratings)5.0 (4 ratings) — better
Positive reviews75.9% of reviews100.0% of reviews — better
Number of ratings11K — better4
Update frequencyEvery 5 weeksWeekly — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.015.0
Further details — not scored
Size448 MB21 MB
Age rating12+4+
DeveloperFast Dictionary LimitedJustin Haubrich

Customer experience

Fastdic

All ratings10,916 ratings
Positive89.0%
Neutral4.7%
Negative6.2%
Written reviews510 reviews
Positive75.9%
Neutral3.9%
Negative20.2%

Avestan Lexicon

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Fastdic

Reported bugs

4 issues
  • App crashes or freezes frequently
  • Ads continue playing in the background even after being closed
  • Saved words and search history not syncing across devices
  • Pronunciation feature not working correctly for some words

Requested features

5 requests
  • Add more words and phrases, especially idioms and slang
  • Improve translation accuracy
  • Provide an English interface option
  • Reduce ads or offer a paid ad-free version
  • Fix bugs and improve stability

Avestan Lexicon

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

Fastdic

One-time6
  • Professional sub - 1 month use$2.99
  • AI subscription - 1 month use$9.99
  • Professional sub - 6 months$14.99
Show 3 more
  • 1 year subscription$24.99
  • AI subscription - 6 months use$49.99
  • AI subscription - 1 year use$89.99
None

Avestan Lexicon

No in-app purchases

Questions

Is Fastdic free?
Fastdic is free to download, with in-app purchases available.
Is Avestan Lexicon free?
Avestan Lexicon is free to download, with no in-app purchases.
Which has better reviews, Fastdic or Avestan Lexicon?
Avestan Lexicon is rated higher. Fastdic averages 4.5 out of 5 from 11K ratings, while Avestan Lexicon averages 5.0 from 4 ratings.
Do Fastdic or Avestan Lexicon have ads?
Fastdic shows ads; Avestan Lexicon does not.
Which is updated more often, Fastdic or Avestan Lexicon?
Fastdic ships an update every 5 weeks, and Avestan Lexicon weekly. Most recently, Fastdic was updated on November 6, 2026 and Avestan Lexicon on October 31, 2026.

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