Fall Detection vs Daily Check-In: What Each One Catches

If you live alone, this is not really an either/or. Fall detection and a daily check-in catch different emergencies -- here is what each one covers, where each one fails, and how they work together.

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In adults over 90, 30% of fallers were on the floor for an hour or more and 82% of falls happened when the person was alone (Fleming & Brayne, BMJ 2008); of those who had a long lie, about half died within six months (Wild et al., BMJ 1981) -- which is why noticing an emergency fast matters however it starts.

The Challenge

A daily check-in cannot catch a fall the instant it happens -- you might wait until the next scheduled check-in

Fall detection cannot catch a slow emergency, like a stroke or sudden illness, where there is no sharp impact

Picking only one leaves a gap in the other kind of emergency

How I'm Alive Helps

Fall detection catches a sudden hard fall in seconds, checking on you first before it alerts anyone

A daily check-in catches the slow, silent emergencies by expecting a tap each day and alerting your contacts if it does not come

Running both closes the gap -- the fast fall and the quiet decline are each covered

What a daily check-in catches

A daily check-in is a simple promise: once a day, you tap to say you are okay. If the tap does not come by your chosen time, I'm Alive reminds you, and if you still do not respond, it alerts your trusted contacts. What it is good at is the slow or silent emergency -- the kind with no dramatic impact for a sensor to detect. A sudden illness that leaves you unable to reach the phone. A stroke. A fall you actually survived but cannot call about. A day when you simply go quiet. None of these produce the sharp motion signature of a hard fall, so a motion sensor would not catch them -- but a missed check-in would. Its limitation is timing. A check-in is only as fast as its schedule. If your check-in is due at 9am and you collapse at 10am, the system does not expect to hear from you again until the next day, so it may not notice for hours. That is the gap fall detection fills. The daily check-in is free in I'm Alive (Try It, $0). Escalation to multiple contacts and SMS alerts start at Protect Me ($29.99/year).

What fall detection catches

Fall detection is the opposite kind of net: it is fast and event-driven. When your phone senses a hard fall, it acts within seconds. It checks on you first with a full-screen "Are you okay?" and a countdown; if you do not respond, it alerts your trusted contacts with your location. There is no waiting for tomorrow's check-in -- the response starts the moment the fall is detected. What it is good at is the sudden, hard fall: a slip on the stairs, a trip in the kitchen, a fall in the bathroom. This is exactly the scenario that goes badly when you live alone, because most falls in the very old happen when the person is alone and more than half leave them on the floor (Fleming & Brayne, BMJ 2008), and a long lie carries serious risk (Wild et al., BMJ 1981). Its limitation is that it needs an impact to detect, and it needs your phone near you. A gradual collapse with no sharp motion may not register, and a phone in another room cannot feel a fall. It is best-effort, not a medical device, and it never calls 911. Fall detection is coming to the I'm Alive app in our next update (v2.3.0), included from Protect Me.

Why many people who live alone use both

Put the two side by side and the picture is clear: A daily check-in covers slow and silent emergencies but is bound to a schedule. Fall detection covers sudden hard falls in real time but needs an impact and your phone nearby. Neither one covers the other's blind spot -- which is exactly why they are designed to run together. With both turned on, a hard fall triggers an immediate check-first alert, while any day you go quiet (for any reason) triggers a missed-check-in alert. Between them, the fast fall and the quiet decline are both covered, and in every case help is routed to the trusted contacts you chose -- never a call center, never 911. A simple way to decide: if you want one free layer today, start with the daily check-in. If you want the sudden-fall layer as well, add Protect Me ($29.99/year) when fall detection arrives, which also unlocks graded escalation and SMS. If you also hike or travel and want location on the move, Protect Me On The Move is $39.99/year.

Sources

- Fleming J & Brayne C, BMJ 2008;337:a2227 (long-lie prevalence; 82% of falls occurred when alone): https://pubmed.ncbi.nlm.nih.gov/19015185/ - Wild D, Nayak USL, Isaacs B, BMJ 1981;282:266-268 (long-lie mortality): https://pubmed.ncbi.nlm.nih.gov/6779979/ I'm Alive is a best-effort personal-safety app, not a medical device, and does not call 911.

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Frequently Asked Questions

What's the difference between fall detection and a daily check-in?

Fall detection catches a sudden hard fall in seconds by sensing the impact and checking on you first. A daily check-in catches slow, silent emergencies by expecting a tap from you each day and alerting your contacts if it does not come. They cover different gaps.

Do I need both fall detection and check-ins?

Many people who live alone use both, because each covers the other's blind spot: fall detection handles the fast, hard fall, and the daily check-in handles the slow or silent emergency where there is no impact to detect.

Which is better for living alone: fall detection or check-in?

It depends on the risk you most want to cover. If you want a free layer today, start with the daily check-in. If you also want sudden-fall coverage, add fall detection (coming in v2.3.0, included from Protect Me). Together they are strongest.

Can a daily check-in catch a fall?

It can catch a fall indirectly -- if a fall leaves you unable to check in, the missed check-in alerts your contacts. But it will not catch the fall in real time; that is what fall detection is for.