# Mltrainer vs Six Harmonies

The clearest difference is update cadence: Mltrainer at every 2 months against Six Harmonies's every 8 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Mltrainer ships an update every 2 months, Six Harmonies every 8 months. The most recent releases landed on October 4, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Mltrainer | Six Harmonies |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (12 ratings)](https://appshunter.io/ios/app/six-harmonies/id6756548776/reviews)** |
| Number of ratings | — | **12** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 8 months |
| Monetization | — | Free |
| Size | 312 MB | 55 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [DUDY SOLUTIONS S.L.](https://appshunter.io/developer/1396095664) | [Momence, Inc.](https://appshunter.io/developer/1577856011) |

## What reviewers say

### Mltrainer

[App page](https://appshunter.io/ios/app/mltrainer/id1663893354)

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

**In-app purchases:** none


### Six Harmonies

[App page](https://appshunter.io/ios/app/six-harmonies/id6756548776)

Manage your account, book classes, and stay connected with announcements and promotions. Easily message the team with any questions or to share feedback. Follow the public feed for updates and shared content.

**Highlights:** Account management, Class and event booking, Direct messaging, Public feed for announcements, Promotional updates

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

**In-app purchases:** none


## Frequently asked questions

### Is Mltrainer free?

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

### Is Six Harmonies free?

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

### Do Mltrainer or Six Harmonies have ads?

Neither Mltrainer nor Six Harmonies shows ads.

### Which is updated more often, Mltrainer or Six Harmonies?

Mltrainer ships an update every 2 months, and Six Harmonies every 8 months. Most recently, Mltrainer was updated on October 4, 2026 and Six Harmonies on October 11, 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.*