# Heartool vs Odma

The clearest difference is in-app purchases: Heartool at none against Odma's 1. Heartool also leads on iOS requirement (12.0 vs 17.0). Odma's advantage is update cadence (every 5 days vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Odma sells 1 one-off in-app purchase. Heartool asks for nothing beyond the download.

Heartool ships an update every 4 months, Odma every 5 days. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Heartool | Odma |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.2 (18 ratings)](https://appshunter.io/ios/app/heartool/id1567361608/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | 23.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 24 MB | 26 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 12+ | 12+ |
| Developer | [Shenzhen Onecoder Technology Co., Ltd.](https://appshunter.io/developer/1131107345) | [Manuel Auer](https://appshunter.io/developer/6799113160) |

## What reviewers say

### Heartool

[App page](https://appshunter.io/ios/app/heartool/id1567361608)

Transform your phone into a fitness tracker to monitor workouts with live heart rate data. Analyze training progress with professional charts and gain insights into your health and cardio condition. Integrates with wearable devices and Apple Health.

**Highlights:** Live heart rate tracking, HRV biofeedback, Cardio health analysis, Workout progress charts, Calorie burned tracking, Health data synchronization

**In-app purchases:** none


### Odma

[App page](https://appshunter.io/ios/app/odma-apnea-trainer/id6799113158)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Odma Pro – Lifetime | $3.99 | one-time |


## Frequently asked questions

### Is Heartool free?

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

### Is Odma free?

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

### Do Heartool or Odma have ads?

Neither Heartool nor Odma shows ads.

### Which is updated more often, Heartool or Odma?

Heartool ships an update every 4 months, and Odma every 5 days. Most recently, Heartool was updated on November 7, 2026 and Odma 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.*