What do the two devices have in common?
Both are handheld, single-lead (single-lead vs. 12-lead) monitors cleared by the FDA for home use. Both capture a roughly 30-second trace through metal sensors you touch with your fingers, and both can flag possible atrial fibrillation and other rhythm irregularities as a prompt to seek care. Both are screening and tracking tools — see what a home EKG can and can’t tell you.How are they different?
| Feature | SonoHealth EKGraph | KardiaMobile (typical) |
|---|---|---|
| Built-in screen | Yes — instant on-device reading, no phone needed | No — results shown in the phone app |
| Recording methods | 4 (hand-to-hand, wrist-to-hand, hand-to-ankle, chest-to-hand; Lead I & II) | Primarily hand-to-hand (Lead I); more leads on higher models |
| Storage | Free unlimited cloud storage, no subscription | Some history/features require a paid membership |
| App | Free SonoHealth app (iOS & Android), PDF export | Free app; advanced features behind subscription |
| Price | 149) | Varies by model |
| Warranty / trial | 2-year warranty, 60-day free trial | Varies |
Which one is easier to use during a symptom?
The EKGraph’s built-in LCD means you can record and see a classification — No Abnormalities, Arrhythmia, Bradycardia, Tachycardia, and more — without unlocking a phone or opening an app, which many people find simpler mid-symptom, especially seniors. A phone-tethered device works well too, but adds a step. For tips that apply to any device, see how to take a good reading.Does no-subscription storage matter?
Over time, yes. Building a dated log of recordings is how a home EKG earns its value — you spot patterns and hand your doctor a history. The EKGraph includes free unlimited cloud storage with no monthly fee, so the cost is the device only. If you compare devices, factor in whether storing and exporting your own recordings costs extra.Which should I choose?
If you want a self-contained device with an on-screen reading, multiple recording positions, and no recurring fees, the EKGraph is a strong fit. If you’re already committed to a particular app ecosystem, a phone-first monitor may suit you. Either way, treat the result as a screening prompt and review anything abnormal with your clinician — see when to see a doctor.A personal EKG is for documenting and tracking your heart rhythm, not for diagnosing heart disease. Always confirm findings with a healthcare professional.
Related: How to Choose a Personal EKG Monitor · Personal EKG vs. Smartwatch · Single-Lead vs. 12-Lead · Best Personal EKG for Seniors