# SLSL Dictionary vs TWA Dictionary

The clearest difference is rating: SLSL Dictionary at 5.0 against TWA Dictionary's 4.3. SLSL Dictionary also leads on in-app purchases (none vs 5) and review sentiment (100% vs 77%). TWA Dictionary's advantage is ratings volume (33 vs 2). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. TWA Dictionary sells 5 in-app purchases, starting at $4.99 per month. SLSL Dictionary asks for nothing beyond the download.

SLSL Dictionary holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: TWA Dictionary has 33 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of SLSL Dictionary's written reviews are positive against 77% of TWA Dictionary's.

SLSL Dictionary ships an update every 5 days, TWA Dictionary every 3 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | SLSL Dictionary | TWA Dictionary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/slsl-dictionary/id6445848879/reviews)** | [4.3 (33 ratings)](https://appshunter.io/ios/app/twa-dictionary/id6465301116/reviews) |
| Number of ratings | 2 | **33** |
| Positive reviews | **100.0% of reviews** | 76.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 52 MB | 41 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Daniel Porteous](https://appshunter.io/developer/1531368370) | [TWA Innovations LLC](https://appshunter.io/developer/1706524789) |

## What reviewers say

### SLSL Dictionary

[App page](https://appshunter.io/ios/app/slsl-dictionary/id6445848879)

Learn sign language with definitions and videos for each sign. Save custom word lists and use flashcards with spaced repetition for effective revision. Supports English, Sinhala, and Tamil.

**Highlights:** Video demonstrations for signs, Custom word list saving, Flashcard revision feature, Spaced repetition learning, Support for English, Sinhala, and Tamil

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

**In-app purchases:** none


### TWA Dictionary

[App page](https://appshunter.io/ios/app/twa-dictionary/id6465301116)

Master American Sign Language with a comprehensive dictionary featuring over 25,000 signs, variations, and cultural insights. Created by a Deaf team, it offers thematic organization, user-driven content requests, and regular updates for an enhanced learning experience.

**Highlights:** Over 25,000 ASL signs, Sign variations and cultural insights, Thematic organization, User-requested content, Continuous updates, Educational blog on Deaf Culture

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $4.99 | per month |
| Pro Yearly | $49.99 | per year |
| Gift Code Month | $4.99 | one-time |
| Gift Code 6 Months | $29.99 | one-time |
| Gift Code 1 Year | $49.99 | one-time |


## Frequently asked questions

### Is SLSL Dictionary free?

SLSL Dictionary is free to download, with no in-app purchases.

### Is TWA Dictionary free?

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

### Which has better reviews, SLSL Dictionary or TWA Dictionary?

SLSL Dictionary is rated higher. SLSL Dictionary averages 5.0 out of 5 from 2 ratings, while TWA Dictionary averages 4.3 from 33 ratings.

### Do SLSL Dictionary or TWA Dictionary have ads?

Neither SLSL Dictionary nor TWA Dictionary shows ads.

### Which is updated more often, SLSL Dictionary or TWA Dictionary?

SLSL Dictionary ships an update every 5 days, and TWA Dictionary every 3 weeks. Most recently, SLSL Dictionary was updated on November 3, 2026 and TWA Dictionary on November 3, 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.*