Sign ASL vs Modal Math
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sign ASL
Access a comprehensive ASL sign dictionary with thousands of words and phrases. This app provides easy access to over 20,000 video demonstrations of American Sign Language signs directly on your mobile device.
- Searchable ASL dictionary
- Thousands of words and phrases
- Over 20,000 video demonstrations
- Mobile access to signs
- Compare ASL signs
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Search and compare thousands of words and phrases in American Sign Language. Easily find and view signs on your mobile device. Over 20,000 videos in this video dictionary. For more information please visit www.signasl.org
Modal Math
This app provides accessible math practice designed by teachers for students with special language needs. It focuses on fostering conceptual understanding and reinforcing mathematical language for diverse learners.
- Designed by teachers
- Accessible for special language needs
- Fosters conceptual understanding
- Reinforces mathematical language
- Supports diverse learning needs
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Learn from anywhere in the Modal Math app! Created by real teachers for real students. At Modal Math, we believe that math learning should to be accessible for learners with special language needs. We aim to create a tool that is makes math learning accessible and meaningful to all. The goal is to foster conceptual understanding of mathematics while establishing and reinforcing language for students with diverse learning needs and ability levels. Our dream is to provide access to learning forstudents in accordance with their needs. Until we do this, we can never know what a student is capable of. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: Modal Math at 5.0 against Sign ASL's 4.1. Modal Math also leads on ads (none vs shown) and update cadence (every 5 weeks vs every 37 months). Sign ASL's advantage is in-app purchases (none vs 2) and ratings volume (90 vs 2). On price and device support 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
Both are free to download. Modal Math sells 2 in-app purchases, starting at $24.99 per month. Sign ASL asks for nothing beyond the download.
Modal Math holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: Sign ASL has 90 ratings behind it against 2, so its average is the more settled of the two.
Sign ASL ships an update every 37 months, Modal Math every 5 weeks. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.
| Parameter | Sign ASL | Modal Math |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (90 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 62.5% of reviews | — |
| Number of ratings | 90 — better | 2 |
| Update frequency | Every 37 months | Every 5 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 3 MB | 75 MB |
| Age rating | 4+ | 4+ |
| Developer | Daniel Mitchell | Asledu LLC |
Customer experience
Sign ASL
Modal Math
Bugs and requests
Sign ASL
Reported bugs
21 issues- Videos do not play
- Video player covers signs
- App crashes before loading
- Play button covers signs
- Icons on top of video
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- Videos play too fast
- Formatting problems
- Difficulty viewing signed examples
- Video player updated unhelpfully
- Sign videos are only a few seconds long
- Controls for video were at the bottom of the screen
- Videos are really hard to see what fingers they are using
- View of the hands signing is blocked by the play button
- Bug fix needed
- Icons for play, back and forward is right on top of the video
- Play and stop is on top of the video so you can’t see the sign
- Can’t make video zoom in or out
- Slur appears in search results
- App kicks me out before it even loads
- One of the signs is very wrong
- Using videos without permission
Requested features
8 requests- Playback option to slow down videos
- Button to make video slow down
- Color tape on fingers for clarity
- Option to save signs for later
- "My signs" section
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- "Frequently used" section
- Ability to zoom in/out on videos
- Simple combinations and other gestures
Modal Math
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Sign ASL
No in-app purchases
Modal Math
- Classroom Membership$24.991 Month
- DHH Teacher Resources$6.99
