# Qaly | ECG Reader vs Clarity Builder

The clearest difference is iOS requirement: Clarity Builder at 13.4 against Qaly | ECG Reader's 17.6. 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.

Qaly | ECG Reader ships an update every 9 days, Clarity Builder fortnightly. The most recent releases landed on November 13, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Qaly | ECG Reader | Clarity Builder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (879 ratings)](https://appshunter.io/ios/app/qaly-ecg-reader/id1542440769/reviews)** | — |
| Number of ratings | **879** | — |
| Positive reviews | 74.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Fortnightly |
| Monetization | Free | — |
| Size | 101 MB | 19 MB |
| Requires iOS | 17.6 | **13.4** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Qaly, Inc.](https://appshunter.io/developer/1542398773) | [Jace Business Technology Solutions Inc](https://appshunter.io/developer/1701015998) |

## What reviewers say

### 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 interprets readings from various devices, identifying over 30 heart rhythm abnormalities. Track heart rate variability to monitor stress and recovery, and share reports with your doctor.

**Highlights:** Expert ECG analysis, Supports multiple wearable devices, Identifies 30+ heart rhythm abnormalities, Heart rate variability tracking, Shareable reports for doctors, Human expert interpretation

**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


### Clarity Builder

[App page](https://appshunter.io/ios/app/clarity-builder/id6748047002)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Qaly | ECG Reader free?

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

### Is Clarity Builder free?

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

### Do Qaly | ECG Reader or Clarity Builder have ads?

Neither Qaly | ECG Reader nor Clarity Builder shows ads.

### Which is updated more often, Qaly | ECG Reader or Clarity Builder?

Qaly | ECG Reader ships an update every 9 days, and Clarity Builder fortnightly. Most recently, Qaly | ECG Reader was updated on November 13, 2026 and Clarity Builder on November 12, 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.*