# TD Snap® vs Math Skills Builder Lite

The clearest difference is rating: Math Skills Builder Lite at 5.0 against TD Snap®'s 4.1. Math Skills Builder Lite also leads on monetization model (free with in-app purchases vs subscription). TD Snap®'s advantage is update cadence (every 2 months vs every 19 months) and ratings volume (864 vs 1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. TD Snap® sells 10 in-app purchases, starting at $4.99 per month and Math Skills Builder Lite sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Math Skills Builder Lite holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: TD Snap® has 864 ratings behind it against 1, so its average is the more settled of the two.

TD Snap® ships an update every 2 months, Math Skills Builder Lite every 19 months. The most recent releases landed on October 21, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | TD Snap® | Math Skills Builder Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (864 ratings)](https://appshunter.io/ios/app/td-snap/id1072799231/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/math-skills-builder-lite/id1277897625/reviews)** |
| Number of ratings | **864** | 1 |
| Positive reviews | 30.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 19 months |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 3.4 GB | 191 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tobii Dynavox LLC](https://appshunter.io/developer/446210474) | [Attainment Company](https://appshunter.io/developer/403989333) |

## What reviewers say

### TD Snap®

[App page](https://appshunter.io/ios/app/td-snap/id1072799231)

This communication software assists individuals with speech and language disabilities by offering symbol-supported and text-based communication options. It features customizable page sets and editing tools, accessible via touch, eye gaze, and switch access. A subscription is required after a trial period.

**Highlights:** Symbol-supported and text-based page sets, Customizable editing tools, Touch, eye gaze, and switch access, Picture Communication Symbols library, Visual schedules and timers, Cloud-based content syncing

**Features:** Family Sharing

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gateway Monthly | $4.99 | per month |
| PODD Monthly | $4.99 | per month |
| Metacom Monthly | $4.99 | per month |
| Speaking Upgrade Monthly | $9.99 | per month |
| Acapela Voices | $39.99 | one-time |
| Nuance Voices | $39.99 | one-time |
| Speaking Upgrade | $49.99 | one-time |
| METACOM Symbols | $49.99 | one-time |
| PODD Page Sets | $149.99 | one-time |
| Gateway Page Sets | $149.99 | one-time |

**What reviewers like**

- 🚀 Easy to use
- 👍 Customizable
- 🚀 Intuitive navigation
- 👍 Helpful supports and features
- 🚀 Flexible and robust

**What reviewers complain about**

- 🔒 Subscription model for voice
- 🐛 Voice issues after updates
- 💰 Expensive subscription
- 🔒 Removing previously paid features
- 🐛 Crashes and bugs

**Reported bugs**

- Voice disappearing after updates
- Crashes on launch
- Incompatibility with iPad Pro
- Inability to restore purchased content

**Requested features**

- Ability to change undo symbol
- Link to ACCIL image database
- Ability to set user age for appropriate vocabulary
- More robust core vocabulary
- Easier grammar modeling


### Math Skills Builder Lite

[App page](https://appshunter.io/ios/app/math-skills-builder-lite/id1277897625)

This app helps students apply early numeracy skills to solve real-world math problems. It uses math stories and concrete strategies to teach when to add or subtract. Research indicates the program is highly effective for developing problem-solving abilities.

**Highlights:** Real-world math problem scenarios, Early numeracy skill application, Concrete addition/subtraction strategies, Multiple learning modes, Research-backed effectiveness

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $59.99 | one-time |


## Frequently asked questions

### Is TD Snap® free?

TD Snap® is free to download, with in-app purchases available.

### Is Math Skills Builder Lite free?

Math Skills Builder Lite is free to download, with in-app purchases available.

### Which has better reviews, TD Snap® or Math Skills Builder Lite?

Math Skills Builder Lite is rated higher. TD Snap® averages 4.1 out of 5 from 864 ratings, while Math Skills Builder Lite averages 5.0 from 1 ratings.

### Do TD Snap® or Math Skills Builder Lite have ads?

Neither TD Snap® nor Math Skills Builder Lite shows ads.

### Which is updated more often, TD Snap® or Math Skills Builder Lite?

TD Snap® ships an update every 2 months, and Math Skills Builder Lite every 19 months. Most recently, TD Snap® was updated on October 21, 2026 and Math Skills Builder Lite on October 5, 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.*