# Fastdic vs Avestan Lexicon

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.

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

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.

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

## The numbers

| Metric | Fastdic | Avestan Lexicon |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (11K ratings)](https://appshunter.io/ios/app/fastdic-fast-dictionary/id434135994/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/avestan-lexicon/id6787595315/reviews)** |
| Number of ratings | **11K** | 4 |
| Positive reviews | 75.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 448 MB | 21 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Fast Dictionary Limited](https://appshunter.io/developer/434135997) | [Justin Haubrich](https://appshunter.io/developer/1776539999) |

## What reviewers say

### Fastdic

[App page](https://appshunter.io/ios/app/fastdic-fast-dictionary/id434135994)

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:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Professional sub - 1 month use | $2.99 | one-time |
| AI subscription - 1 month use | $9.99 | one-time |
| Professional sub - 6 months | $14.99 | one-time |
| 1 year subscription | $24.99 | one-time |
| AI subscription - 6 months use | $49.99 | one-time |
| AI subscription - 1 year use | $89.99 | one-time |

**What reviewers like**

- 🚀 Fast and efficient
- 💡 Useful features like translation, pronunciation, and saved words
- 👍 Comprehensive dictionary with extensive vocabulary
- 🌟 Overall great app

**What reviewers complain about**

- 🔍 Lack of English interface makes it difficult for non-Farsi speakers
- 🔍 Incomplete dictionary with missing words and phrases
- 🔍 Inaccurate translations for some words
- 🔍 Excessive ads that disrupt user experience
- 🐛 Bugs and crashes, especially after recent updates

**Reported bugs**

- 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**

- 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

[App page](https://appshunter.io/ios/app/avestan-lexicon/id6787595315)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*