# Heat Harmony vs NRTHRN Strong

The clearest difference is update cadence: NRTHRN Strong at every 3 weeks against Heat Harmony's every 2 months. Heat Harmony's advantage is iOS requirement (13.0 vs 16.0). 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.

Heat Harmony ships an update every 2 months, NRTHRN Strong every 3 weeks. The most recent releases landed on October 25, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Heat Harmony | NRTHRN Strong |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (7 ratings)](https://appshunter.io/ios/app/nrthrn-strong/id6768377622/reviews)** |
| Number of ratings | — | **7** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 39 MB | 38 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [YOGO.DK ApS](https://appshunter.io/developer/1473308022) | [Nordic Strong ApS](https://appshunter.io/developer/1619477306) |

## What reviewers say

### Heat Harmony

[App page](https://appshunter.io/ios/app/heat-harmony/id6670617518)

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

**In-app purchases:** none


### NRTHRN Strong

[App page](https://appshunter.io/ios/app/nrthrn-strong/id6768377622)

Easily browse and purchase class packs or membership options. View the class schedule, filter by type, and manage your reservations to stay organized and committed to your fitness goals.

**Highlights:** Purchase class packs and memberships, Browse and view class schedule, Filter classes by type, Manage class reservations, Stay organized with fitness goals

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Heat Harmony free?

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

### Is NRTHRN Strong free?

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

### Do Heat Harmony or NRTHRN Strong have ads?

Neither Heat Harmony nor NRTHRN Strong shows ads.

### Which is updated more often, Heat Harmony or NRTHRN Strong?

Heat Harmony ships an update every 2 months, and NRTHRN Strong every 3 weeks. Most recently, Heat Harmony was updated on October 25, 2026 and NRTHRN Strong on October 7, 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.*