# Sight Words Sentence Builder vs TD Snap®

The clearest difference is price: TD Snap® at Free against Sight Words Sentence Builder's $7.99. TD Snap® also leads on update cadence (every 2 months vs every 7 months) and ratings volume (867 vs 77). Sight Words Sentence Builder's advantage is review sentiment (73% vs 31%) and in-app purchases (none vs 10). On rating, ads and iOS requirement there is nothing between them.

TD Snap® is free to download; Sight Words Sentence Builder costs $7.99 up front. TD Snap® sells 10 in-app purchases, starting at $4.99 per month. Sight Words Sentence Builder asks for nothing beyond the download.

Sight Words Sentence Builder holds the better App Store score, 4.3 against 4.1. That said, the two scores are not equally well evidenced: TD Snap® has 867 ratings behind it against 77, so its average is the more settled of the two. Written reviews point the same way: 73% of Sight Words Sentence Builder's written reviews are positive against 31% of TD Snap®'s.

Sight Words Sentence Builder ships an update every 7 months, TD Snap® every 2 months. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Sight Words Sentence Builder | TD Snap® |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | **[4.3 (77 ratings)](https://appshunter.io/ios/app/sight-words-sentence-builder/id527718967/reviews)** | [4.1 (867 ratings)](https://appshunter.io/ios/app/td-snap/id1072799231/reviews) |
| Number of ratings | 77 | **867** |
| Positive reviews | **73.0% of reviews** | 30.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | **Free** | Subscription |
| Size | 160 MB | 3.4 GB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sierra Vista Software](https://appshunter.io/developer/429614182) | [Tobii Dynavox LLC](https://appshunter.io/developer/446210474) |

## What reviewers say

### Sight Words Sentence Builder

[App page](https://appshunter.io/ios/app/sight-words-sentence-builder/id527718967)

This app helps young learners master essential sight words by building sentences. It offers an interactive and engaging way for children to practice word recognition and sentence construction, fostering reading fluency. Progress is tracked with a report card to monitor improvement.

**Highlights:** Sight word recognition training, Sentence construction practice, Interactive word arrangement, Progress monitoring via report card, Engaging graphics and rewards, Repetitive play for mastery

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Sight Words Sentence Builder free?

Sight Words Sentence Builder costs $7.99, with no in-app purchases.

### Is TD Snap® free?

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

### Which has better reviews, Sight Words Sentence Builder or TD Snap®?

Sight Words Sentence Builder is rated higher. Sight Words Sentence Builder averages 4.3 out of 5 from 77 ratings, while TD Snap® averages 4.1 from 867 ratings.

### Do Sight Words Sentence Builder or TD Snap® have ads?

Neither Sight Words Sentence Builder nor TD Snap® shows ads.

### Which is updated more often, Sight Words Sentence Builder or TD Snap®?

Sight Words Sentence Builder ships an update every 7 months, and TD Snap® every 2 months. Most recently, Sight Words Sentence Builder was updated on October 23, 2026 and TD Snap® on October 26, 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.*