# Cardio Tools vs Echo Calculate

The clearest difference is update cadence: Echo Calculate at every 6 months against Cardio Tools's every 20 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Cardio Tools sells 1 one-off in-app purchase and Echo Calculate sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Cardio Tools ships an update every 20 months, Echo Calculate every 6 months. The most recent releases landed on September 30, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Cardio Tools | Echo Calculate |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 6 months** |
| Size | 2 MB | 26 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Beijing Fate Med Technology Co., Ltd.](https://appshunter.io/developer/924303274) | [Gundogan Emre](https://appshunter.io/developer/1651146056) |

## What reviewers say

### Cardio Tools

[App page](https://appshunter.io/ios/app/cardio-tools/id1630861258)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Premium | $4.99 | one-time |


### Echo Calculate

[App page](https://appshunter.io/ios/app/echo-calculate/id1660468437)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Echo Calculate Premium | $3.99 | one-time |


## Frequently asked questions

### Is Cardio Tools free?

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

### Is Echo Calculate free?

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

### Do Cardio Tools or Echo Calculate have ads?

Neither Cardio Tools nor Echo Calculate shows ads.

### Which is updated more often, Cardio Tools or Echo Calculate?

Cardio Tools ships an update every 20 months, and Echo Calculate every 6 months. Most recently, Cardio Tools was updated on September 30, 2026 and Echo Calculate on October 3, 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.*