# Flatliner vs cardiBlue

The clearest difference is update cadence: cardiBlue at every 2 days against Flatliner's monthly. On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Flatliner sells 1 one-off in-app purchase and cardiBlue sells 3 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Flatliner ships an update monthly, cardiBlue every 2 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Flatliner | cardiBlue |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/flatliner-code-blue-recorder/id6751251620/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 55 MB | 29 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 12+ |
| Developer | [Faisal Baabbad](https://appshunter.io/developer/1829799045) | [Virtugenic, LLC](https://appshunter.io/developer/557545731) |

## What reviewers say

### Flatliner

[App page](https://appshunter.io/ios/app/flatliner-code-blue-recorder/id6751251620)

This app allows medical professionals to meticulously log critical interventions during CPR events in real time. It generates organized summaries for immediate review and professional documentation, aiding in efficient patient care.

**Highlights:** Real-time CPR event logging, CPR code and compression timers, Medication, rhythm, and shock tracking, Epinephrine and pulse check reminders, Chest compression fraction calculator, Built-in metronome, Clean CPR summaries

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flatliner Pro Unlock | $9.99 | one-time |


### cardiBlue

[App page](https://appshunter.io/ios/app/cardiblue/id6791207024)

This hands-free medical aid assists trained professionals during critical events by timing CPR cycles and medication intervals. It allows for voice-driven logging of events like rhythms, shocks, and medications, creating a timestamped record for easy charting. The app provides spoken prompts and an on-screen summary, with options for PDF export and AI-generated charting narratives.

**Highlights:** Hands-free voice logging, CPR cycle timer with prompts, Epinephrine interval timer, Timestamped event log, PDF export of timeline, AI-generated charting narrative

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| cardiBlue Pro — Monthly | $5.99 | per month |
| cardiBlue Pro — Yearly | $44.99 | per year |
| Single Report | $2.99 | one-time |


## Frequently asked questions

### Is Flatliner free?

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

### Is cardiBlue free?

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

### Do Flatliner or cardiBlue have ads?

Neither Flatliner nor cardiBlue shows ads.

### Which is updated more often, Flatliner or cardiBlue?

Flatliner ships an update monthly, and cardiBlue every 2 days. Most recently, Flatliner was updated on October 30, 2026 and cardiBlue 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.*