# ATHS Connect vs Sinoa

The clearest difference is in-app purchases: ATHS Connect at none against Sinoa's 2. Sinoa's advantage is update cadence (every 2 days vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Sinoa sells 2 in-app purchases, starting at $9.99 per month. ATHS Connect asks for nothing beyond the download.

ATHS Connect ships an update every 4 months, Sinoa every 2 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ATHS Connect | Sinoa |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sinoa-understand-your-ecg/id6759451999/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 days** |
| Monetization | — | Freemium |
| Size | 55 MB | 45 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [American Truck Historical Society](https://appshunter.io/developer/1618751362) | [MICHAEL WILLIAM POTTER](https://appshunter.io/developer/1878676019) |

## What reviewers say

### ATHS Connect

[App page](https://appshunter.io/ios/app/aths-connect/id1618751360)

**Features:** Vision Pro support

**In-app purchases:** none


### Sinoa

[App page](https://appshunter.io/ios/app/sinoa-understand-your-ecg/id6759451999)

This app uses AI to analyze your ECG history, identifying recurring waveform patterns and explaining them in plain language. It helps you understand how these patterns change over time by comparing recordings across days, months, and years, providing context beyond individual readings.

**Highlights:** AI-driven ECG pattern identification, Plain-language pattern summaries, Comparison of ECG history over time, Tracking pattern frequency, Explanation of findings and evidence, Learning ECG concepts, Private note-taking on recordings, Secure sharing of summaries

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SINOA Standard | $9.99 | per month |
| SINOA Premium | $29.99 | per month |


## Frequently asked questions

### Is ATHS Connect free?

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

### Is Sinoa free?

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

### Do ATHS Connect or Sinoa have ads?

Neither ATHS Connect nor Sinoa shows ads.

### Which is updated more often, ATHS Connect or Sinoa?

ATHS Connect ships an update every 4 months, and Sinoa every 2 days. Most recently, ATHS Connect was updated on November 3, 2026 and Sinoa 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.*