# VitalSign Holter vs Qaly | ECG Reader

The clearest difference is ratings volume: Qaly | ECG Reader at 875 against VitalSign Holter's 1. VitalSign Holter's advantage is rating (5.0 vs 4.7) and device support (3 vs 1). On price, update cadence, 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.

VitalSign Holter holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Qaly | ECG Reader has 875 ratings behind it against 1, so its average is the more settled of the two.

VitalSign Holter ships an update every 3 weeks, Qaly | ECG Reader every 2 weeks. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | VitalSign Holter | Qaly | ECG Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/vitalsign-holter/id1357539530/reviews)** | [4.7 (875 ratings)](https://appshunter.io/ios/app/qaly-ecg-reader/id1542440769/reviews) |
| Number of ratings | 1 | **875** |
| Positive reviews | — | 74.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 13 MB | 97 MB |
| Requires iOS | **9.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [VITALSIGNS TECHNOLOGY CO., LTD.](https://appshunter.io/developer/1394370436) | [Qaly, Inc.](https://appshunter.io/developer/1542398773) |

## What reviewers say

### VitalSign Holter

[App page](https://appshunter.io/ios/app/vitalsign-holter/id1357539530)

This app measures biological signals using specific hardware and electrodes. It allows users to save and load measurement data associated with their account.

**Highlights:** Biological signal measurement, Uses VitalSigns hardware, Supports four electrocardiograph electrodes, Save measurement data, Load measurement data, Account-based data management

**Features:** macOS Compatibility

**In-app purchases:** none


### Qaly | ECG Reader

[App page](https://appshunter.io/ios/app/qaly-ecg-reader/id1542440769)

Get your ECGs analyzed by certified experts within minutes for peace of mind. This app supports various devices like Apple Watch and Fitbit, offering detailed interpretations of palpitations and abnormal heart rhythms. Track heart rate variability to monitor stress and recovery.

**Highlights:** Expert ECG interpretation, Supports Apple Watch, Fitbit, Kardia, and more, Analysis of 30+ heart rhythms, Heart rate variability (HRV) tracking, Shareable reports for doctors, Integration with Health app

**Features:** Apple Wallet

**In-app purchases:** none

**What reviewers like**

- 🚀 Quick response times
- 👍 Helpful and reassuring technicians
- 💡 Provides peace of mind
- 👍 Detailed and informative ECG analysis
- 👍 Easy to use app

**What reviewers complain about**

- 🐛 Inconsistent ECG analysis
- 🔍 Lack of transparency around pricing
- 🔍 Difficult to cancel subscription
- 🕰️ Long wait times for ECG reviews
- 🔍 Requires access to Apple Health data

**Reported bugs**

- App crashes on launch
- Issues deleting account and data
- Subscription charges not stopping after cancellation

**Requested features**

- Dark mode option
- Ability to view past ECG history
- Integration with more wearable devices
- Option to request a specific technician review


## Frequently asked questions

### Is VitalSign Holter free?

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

### Is Qaly | ECG Reader free?

Qaly | ECG Reader is free to download, with no in-app purchases.

### Which has better reviews, VitalSign Holter or Qaly | ECG Reader?

VitalSign Holter is rated higher. VitalSign Holter averages 5.0 out of 5 from 1 ratings, while Qaly | ECG Reader averages 4.7 from 875 ratings.

### Do VitalSign Holter or Qaly | ECG Reader have ads?

Neither VitalSign Holter nor Qaly | ECG Reader shows ads.

### Which is updated more often, VitalSign Holter or Qaly | ECG Reader?

VitalSign Holter ships an update every 3 weeks, and Qaly | ECG Reader every 2 weeks. Most recently, VitalSign Holter was updated on October 24, 2026 and Qaly | ECG Reader on October 29, 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.*