# American Heritage® Dictionary vs Thai Fast Dictionary

The clearest difference is price: Thai Fast Dictionary at Free against American Heritage® Dictionary's $12.99. Thai Fast Dictionary also leads on rating (5.0 vs 4.7). American Heritage® Dictionary's advantage is ads (none vs shown) and ratings volume (199 vs 1). On review sentiment, update cadence, in-app purchases and monetization model there is nothing between them.

Thai Fast Dictionary is free to download; American Heritage® Dictionary costs $12.99 up front. American Heritage® Dictionary sells 1 one-off in-app purchase and Thai Fast Dictionary sells 7 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Thai Fast Dictionary holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: American Heritage® Dictionary has 199 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 66% of American Heritage® Dictionary's written reviews are positive against 60% of Thai Fast Dictionary's, so the app with the better star average is not the one people write more warmly about.

American Heritage® Dictionary ships an update every 2 months, Thai Fast Dictionary every 6 weeks. The most recent releases landed on September 23, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | American Heritage® Dictionary | Thai Fast Dictionary |
| --- | --- | --- |
| Price | $12.99 | **Free** |
| Rating | [4.7 (199 ratings)](https://appshunter.io/ios/app/american-heritage-dictionary/id284965601/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/thai-fast-dictionary/id376340941/reviews)** |
| Number of ratings | **199** | 1 |
| Positive reviews | **65.6% of reviews** | 59.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 385 MB | 143 MB |
| Requires iOS | **12.0** | 14.0.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Enfour, Inc.](https://appshunter.io/developer/284965604) | [THAI FAST COMPANY LIMITED](https://appshunter.io/developer/1225512562) |

## What reviewers say

### American Heritage® Dictionary

[App page](https://appshunter.io/ios/app/american-heritage-dictionary/id284965601)

Access a comprehensive digital dictionary with nearly 300,000 terms and thousands of sound files. Features include advanced search, etymology, and AI-powered tools for deeper understanding and language learning.

**Highlights:** Full dictionary text, 33,000+ example sentences, 64,000+ recorded sound files, Three-way cross-referencing search, Etymology with root links, AI Teacher for ESL students, Offline use

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Roget's II Thesaurus | $4.99 | one-time |

**What reviewers like**

- 🚀 Fast and efficient
- 👍 Comprehensive and authoritative
- 👍 Excellent pronunciation audio
- 👍 Helpful etymologies and word roots
- 👍 Seamless integration with Roget's Thesaurus

**What reviewers complain about**

- 🐛 Occasional crashes or freezes
- 🔋 Large app size can cause sync issues
- 🔒 Concerning privacy/security issues with unauthorized social media posts
- 👎 Overpriced compared to alternatives
- 👎 Lack of customization options (font size, themes, etc.)

**Reported bugs**

- Compatibility issues with newer iOS versions
- Unreliable audio playback
- Unexpected behavior when clearing search history

**Requested features**

- Ability to bookmark words and organize them into custom categories
- Improved search functionality (e.g. tapping words in definitions to jump to them)
- Landscape mode support
- Better sync/backup options for user data
- More visual aids and illustrations


### Thai Fast Dictionary

[App page](https://appshunter.io/ios/app/thai-fast-dictionary/id376340941)

Access an extensive offline dictionary with definitions and examples across multiple languages. An integrated AI chatbot offers instant assistance for clarifying terms, expanding vocabulary, and practicing pronunciation.

**Highlights:** Offline global standard database, Extensive word repository, Definitions and examples, Integrated AI chatbot, Instant assistance, Pronunciation practice

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advance features | $0.99 | per month |
| Offline IPA with no Ads | $2.99 | per year |
| English meaning and samples | $2.99 | per year |
| Advance features | $4.99 | per year |
| Point 1000 pts | $2.99 | one-time |
| Point 5500 pts | $12.99 | one-time |
| Point 12000 pts | $29.99 | one-time |


## Frequently asked questions

### Is American Heritage® Dictionary free?

American Heritage® Dictionary costs $12.99, and also offers in-app purchases.

### Is Thai Fast Dictionary free?

Thai Fast Dictionary is free to download, with in-app purchases available.

### Which has better reviews, American Heritage® Dictionary or Thai Fast Dictionary?

Thai Fast Dictionary is rated higher. American Heritage® Dictionary averages 4.7 out of 5 from 199 ratings, while Thai Fast Dictionary averages 5.0 from 1 ratings.

### Do American Heritage® Dictionary or Thai Fast Dictionary have ads?

Thai Fast Dictionary shows ads; American Heritage® Dictionary does not.

### Which is updated more often, American Heritage® Dictionary or Thai Fast Dictionary?

American Heritage® Dictionary ships an update every 2 months, and Thai Fast Dictionary every 6 weeks. Most recently, American Heritage® Dictionary was updated on September 23, 2026 and Thai Fast Dictionary on September 24, 2026.

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