# HeartRateHub vs TRAINAA

The clearest difference is update cadence: TRAINAA at every 4 days against HeartRateHub's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. HeartRateHub sells 3 in-app purchases, starting at $1.99 per 7 days and TRAINAA sells 3 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

HeartRateHub ships an update every 4 months, TRAINAA every 4 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | HeartRateHub | TRAINAA |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 59 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Enzer Erkin](https://appshunter.io/developer/1545061957) | [JANIK JAKOB UELLENDAHL](https://appshunter.io/developer/1846654456) |

## What reviewers say

### HeartRateHub

[App page](https://appshunter.io/ios/app/heartratehub/id6477622582)

This app helps runners train smarter by utilizing personalized heart rate zones. It integrates with Apple Watch to provide real-time feedback and allows for the creation of custom or pre-set interval workouts for improved endurance and speed.

**Highlights:** Custom heart rate zone creation, Flexible interval workout design, Predefined zone templates, Apple Watch real-time feedback, Speedometer-style visual display, Data-driven goal-oriented sessions

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $1.99 | per 7 days |
| Monthly Subscription | $3.99 | per month |
| Yearly Subscription | $24.99 | per year |


### TRAINAA

[App page](https://appshunter.io/ios/app/trainaa-endurance-training/id6758528495)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly PRO | $8.99 | per month |
| Monthly PRO | $11.99 | per month |
| Yearly PRO | $99.99 | per year |


## Frequently asked questions

### Is HeartRateHub free?

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

### Is TRAINAA free?

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

### Do HeartRateHub or TRAINAA have ads?

Neither HeartRateHub nor TRAINAA shows ads.

### Which is updated more often, HeartRateHub or TRAINAA?

HeartRateHub ships an update every 4 months, and TRAINAA every 4 days. Most recently, HeartRateHub was updated on November 4, 2026 and TRAINAA on October 31, 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.*