# Opti Train vs That Smile App™

The clearest difference is in-app purchases: That Smile App™ at none against Opti Train's 2. That Smile App™ also leads on update cadence (every 3 weeks vs every 2 months). Opti Train's advantage is ratings volume (3 vs 1) and iOS requirement (13.0 vs 15.6). On price, rating, ads and device support there is nothing between them.

Both are free to download. Opti Train sells 2 in-app purchases, starting at $9.99 per month. That Smile App™ asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Opti Train against 5.0 for That Smile App™. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Opti Train ships an update every 2 months, That Smile App™ every 3 weeks. The most recent releases landed on September 28, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Opti Train | That Smile App™ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/opti-train/id1037469787/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/that-smile-app/id6468306501/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Subscription | **Free** |
| Size | 411 MB | 148 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Optiherence](https://appshunter.io/developer/948846804) | [That Smile App LLC](https://appshunter.io/developer/1458451231) |

## What reviewers say

### Opti Train

[App page](https://appshunter.io/ios/app/opti-train/id1037469787)

This app helps you achieve peak performance by training your brain patterns. It uses a compatible brain-sensing accessory to provide audio and video neurofeedback, guiding you to a personalized optimized state for any activity.

**Highlights:** Sport-specific training modes, General performance training, Audio and video neurofeedback, Personalized brain pattern training, Brain map visualization, Synchronization of thought levels

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Opti Subscription | $9.99 | per month |
| Yearly Opti Subscription | $99.99 | per year |


### That Smile App™

[App page](https://appshunter.io/ios/app/that-smile-app/id6468306501)

This app uses Smile Powered™ technology and a Guided Smiling™ experience to help you smile more, enhancing happiness and health. It tracks your smiles in real-time, allowing you to set goals, build streaks, and view progress through a dashboard. Explore articles on the science of smiling and its benefits for mental and physical well-being.

**Highlights:** Smile Powered™ technology, Guided Smiling™ experience, Real-time smile tracking, Goal setting and streak tracking, Progress visualization dashboard, Educational articles on smiling

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Opti Train free?

Opti Train is free to download, with in-app purchases available.

### Is That Smile App™ free?

That Smile App™ is free to download, with no in-app purchases.

### Which has better reviews, Opti Train or That Smile App™?

Opti Train and That Smile App™ are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do Opti Train or That Smile App™ have ads?

Neither Opti Train nor That Smile App™ shows ads.

### Which is updated more often, Opti Train or That Smile App™?

Opti Train ships an update every 2 months, and That Smile App™ every 3 weeks. Most recently, Opti Train was updated on September 28, 2026 and That Smile App™ on September 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.*