# Opti Train vs MindViewer

The clearest difference is in-app purchases: MindViewer at none against Opti Train's 2. Opti Train's advantage is review sentiment (33% vs 0%) and update cadence (every 2 months vs every 4 months). On price, 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. MindViewer asks for nothing beyond the download.

Opti Train ships an update every 2 months, MindViewer every 4 months. The most recent releases landed on September 10, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Opti Train | MindViewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/opti-train/id1037469787/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | **33.3% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Subscription | **Free** |
| Size | 411 MB | 126 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Optiherence](https://appshunter.io/developer/948846804) | [Neeuro Pte Ltd](https://appshunter.io/developer/960758140) |

## 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 |


### MindViewer

[App page](https://appshunter.io/ios/app/mindviewer/id1436471710)

Understand your mental state during activities like studying, working, or resting. This tool visualizes your attention, relaxation, and mental workload using brain signal data from a compatible sensor.

**Highlights:** Visualize mental states, Track attention and relaxation, Measure mental workload, Analyze brain frequencies (delta, theta, alpha, beta, gamma), Record mental state during activities, Compare effectiveness of different activities

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

**In-app purchases:** none


## Frequently asked questions

### Is Opti Train free?

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

### Is MindViewer free?

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

### Do Opti Train or MindViewer have ads?

Neither Opti Train nor MindViewer shows ads.

### Which is updated more often, Opti Train or MindViewer?

Opti Train ships an update every 2 months, and MindViewer every 4 months. Most recently, Opti Train was updated on September 10, 2026 and MindViewer on September 18, 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.*