# Opti Train vs NatureWalk

The clearest difference is in-app purchases: NatureWalk at none against Opti Train's 2. Opti Train's advantage is update cadence (every 2 months vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

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

Opti Train ships an update every 2 months, NatureWalk every 3 months. The most recent releases landed on September 10, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Opti Train | NatureWalk |
| --- | --- | --- |
| 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 | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Subscription | — |
| Size | 411 MB | 93 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Optiherence](https://appshunter.io/developer/948846804) | [BrainTrain Inc.](https://appshunter.io/developer/584469134) |

## 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 |


### NatureWalk

[App page](https://appshunter.io/ios/app/naturewalk/id1091288409)

**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 NatureWalk free?

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

### Do Opti Train or NatureWalk have ads?

Neither Opti Train nor NatureWalk shows ads.

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

Opti Train ships an update every 2 months, and NatureWalk every 3 months. Most recently, Opti Train was updated on September 10, 2026 and NatureWalk on September 13, 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.*