Flatliner vs cardiBlue
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Flatliner
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.
- 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
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Flatliner helps trained emergency physicians, nurses, and paramedics record CPR and code blue events and prepare documentation. Record medications, rhythms, shocks, pulse checks, procedures, and key timestamps during a resuscitation. Review the event timeline afterward, generate a CPR summary, then review, edit, copy, or share the text for documentation. Choose the session mode that fits your workflow: • Standard tracks compressions and chest compression fraction (CCF). • Separate timers provides a separate timer layout. • Logging only focuses on event recording without tracking compressions or CCF. Configure voice, notification, and haptic reminders. Adjust cycle and epinephrine voice volumes separately, try reminder previews, and enable optional antiarrhythmic medication alerts. Notification previews stay separate from a live session. Other features include CPR and compression timers, a metronome, a CCF calculator, code history, and light and dark mode. Review generated notes against the clinical record before use.
cardiBlue
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.
- Hands-free voice logging
- CPR cycle timer with prompts
- Epinephrine interval timer
- Timestamped event log
- PDF export of timeline
- AI-generated charting narrative
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Run the code. cardiBlue keeps the record. cardiBlue is a documentation and timing aid for trained medical professionals. It is not a medical device, does not provide clinical guidance or decision support, and is not a substitute for professional judgment. In an emergency, follow your institution's protocols and activate your code team. cardiBlue is a hands-free code blue timer built for nurses and code teams. Say "start code" and it listens: log rhythms, shocks, and medications by voice while it runs your CPR cycle timer and epinephrine interval with spoken prompts — your hands never leave the patient. VOICE-DRIVEN LOGGING • "Rhythm is V-fib" — "Shock delivered" — "Epinephrine given" • Timestamped event log built as you speak • Voice undo for corrections, kept transparently in the record • Works face-up on the crash cart, no tapping required TIMERS THAT SPEAK UP • 2:00 CPR cycle timer with spoken cycle prompts • Epinephrine timer (3–5 min, configurable) with due reminders • Haptic confirmations for loud rooms; full silent mode available THE RECORD, READY FOR CHARTING • On-screen summary the moment the code ends — free, always • PDF export of the complete timeline (Pro or single purchase) • AI-written charting narrative generated from your event log • Multi-arrest breakdowns: ROSC, re-arrest, per-arrest stats • Corrected entries shown transparently, never hidden SIMPLE PRICING The live timer, voice commands, and on-screen summary are free forever. Your first PDF export is free. After that: subscribe for unlimited exports and your full code history, or buy a single report — no subscription required. PRIVATE BY DESIGN No accounts. No sign-up. No patient information — ever. cardiBlue logs event types and times only, stored on your device. cardiBlue records what you tell it and times intervals. It does not diagnose, recommend treatment, or provide ACLS guidance. It is a training and documentation aid, not a medical device. Always follow your institution's protocols and use your own clinical judgment. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Flatliner | cardiBlue |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Monthly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 55 MB | 29 MB |
| Age rating | 17+ | 12+ |
| Developer | Faisal Baabbad | Virtugenic, LLC |
Customer experience
Flatliner
cardiBlue
In-app purchases
Flatliner
- Flatliner Pro Unlock$9.99
cardiBlue
- cardiBlue Pro — Monthly7 Days trial$5.991 Month
- cardiBlue Pro — Yearly7 Days trial$44.991 Year
- Single Report$2.99








