# My HIIT 365 vs FlexDay

The clearest difference is in-app purchases: My HIIT 365 at none against FlexDay's 1. My HIIT 365 also leads on update cadence (fortnightly vs every 6 weeks) and iOS requirement (17.6 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. FlexDay sells 1 in-app purchase, starting at $14.99 per year. My HIIT 365 asks for nothing beyond the download.

My HIIT 365 ships an update fortnightly, FlexDay every 6 weeks. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | My HIIT 365 | FlexDay |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/flexday/id6746876893/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 4 MB | 620 MB |
| Requires iOS | **17.6** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Torsten Schmidt](https://appshunter.io/developer/1789289185) | [OnlyAI Ltd](https://appshunter.io/developer/1818888386) |

## What reviewers say

### My HIIT 365

[App page](https://appshunter.io/ios/app/my-hiit-365/id6740262657)

**Features:** macOS Compatibility

**In-app purchases:** none


### FlexDay

[App page](https://appshunter.io/ios/app/flexday/id6746876893)

This app offers guided stretching routines for various needs, from morning energizers to post-workout recovery. It features over 70 exercises, smart scheduling, progress tracking, and Apple Health integration. Stretch anywhere, anytime, with offline access.

**Highlights:** 70+ stretching exercises, Guided routines with visual instructions, Smart calendar scheduling, Progress tracking and milestones, Apple Health integration, Offline access

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FlexDay Premium | $14.99 | per year |


## Frequently asked questions

### Is My HIIT 365 free?

My HIIT 365 is free to download, with no in-app purchases.

### Is FlexDay free?

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

### Do My HIIT 365 or FlexDay have ads?

Neither My HIIT 365 nor FlexDay shows ads.

### Which is updated more often, My HIIT 365 or FlexDay?

My HIIT 365 ships an update fortnightly, and FlexDay every 6 weeks. Most recently, My HIIT 365 was updated on November 8, 2026 and FlexDay on November 5, 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.*