# HiSono vs iECG

The clearest difference is update cadence: HiSono at fortnightly against iECG's every 2 months. HiSono also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

HiSono ships an update fortnightly, iECG every 2 months. The most recent releases landed on October 7, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | HiSono | iECG |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Size | 189 MB | 2 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Hukui Biotechnology](https://appshunter.io/developer/1591429992) | [徐州永康电子科技有限公司](https://appshunter.io/developer/1095223244) |

## What reviewers say

### HiSono

[App page](https://appshunter.io/ios/app/hisono/id6449582837)

**Features:** macOS Compatibility

**In-app purchases:** none


### iECG

[App page](https://appshunter.io/ios/app/iecg/id6468363704)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HiSono free?

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

### Is iECG free?

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

### Do HiSono or iECG have ads?

Neither HiSono nor iECG shows ads.

### Which is updated more often, HiSono or iECG?

HiSono ships an update fortnightly, and iECG every 2 months. Most recently, HiSono was updated on October 7, 2026 and iECG on October 17, 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.*