# Opposite Words Learning vs Smarty Tooth

The clearest difference is iOS requirement: Opposite Words Learning at 13.0 against Smarty Tooth's 15.6. On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Opposite Words Learning against 5.0 for Smarty Tooth. Both are backed by a comparable volume of ratings — 6 and 4 respectively.

Opposite Words Learning ships an update every 7 months, Smarty Tooth every 6 months. The most recent releases landed on September 9, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Opposite Words Learning | Smarty Tooth |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (6 ratings)](https://appshunter.io/ios/app/opposite-words-learning/id6444826565/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/smarty-tooth/id6482852976/reviews) |
| Number of ratings | **6** | 4 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 months** |
| Monetization | Free | Free |
| Size | 68 MB | 25 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Chandrika Dalwadi](https://appshunter.io/developer/1653431404) | [Smarty Tooth LLC](https://appshunter.io/developer/1739907794) |

## What reviewers say

### Opposite Words Learning

[App page](https://appshunter.io/ios/app/opposite-words-learning/id6444826565)

Expand your English vocabulary with a comprehensive collection of words, including opposites, homophones, irregular verbs, and synonyms. This app offers interactive learning with auditory feedback and offline access to enhance language skills for students and enthusiasts.

**Highlights:** Learn opposite words, Learn homophones, Learn irregular verbs, Learn synonyms, Auditory feedback for pronunciation, Offline access, Interactive matching exercises

**Features:** macOS Compatibility

**In-app purchases:** none


### Smarty Tooth

[App page](https://appshunter.io/ios/app/smarty-tooth/id6482852976)

This app is a dental education tool that helps patients understand oral health and dental treatments. It provides a simple reference guide with text and photos to facilitate informed conversations between doctors and patients.

**Highlights:** Learn about dental treatments, Understand oral health, Easy-to-use reference guide, Text and photo explanations, Enhance doctor-patient conversations, Covers various treatment topics

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

**In-app purchases:** none


## Frequently asked questions

### Is Opposite Words Learning free?

Opposite Words Learning is free to download, with no in-app purchases.

### Is Smarty Tooth free?

Smarty Tooth is free to download, with no in-app purchases.

### Which has better reviews, Opposite Words Learning or Smarty Tooth?

Opposite Words Learning and Smarty Tooth are both rated 5.0 out of 5 on the App Store, from 6 and 4 ratings respectively.

### Do Opposite Words Learning or Smarty Tooth have ads?

Neither Opposite Words Learning nor Smarty Tooth shows ads.

### Which is updated more often, Opposite Words Learning or Smarty Tooth?

Opposite Words Learning ships an update every 7 months, and Smarty Tooth every 6 months. Most recently, Opposite Words Learning was updated on September 9, 2026 and Smarty Tooth on September 20, 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.*