Lifekey vs JUSTIN
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lifekey
Instantly share bio, social links, and personal safety information with a tap. Connect with family, manage profiles for loved ones, and protect personal health data. Also allows for item and pet tracking.
- Instant bio and social link sharing
- Personal safety information access
- Family and loved one check-ins
- Temporary health data access
- Pet and item tracking
- Tap OS integration
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Lifekey® connects to wearables and other devices to provide instant access to your bio, social links, and personal safety info with just a tap. Check-in with family members to let them know where you are and what you're up to. There's no creepy tracking — share only when you want to. Use the app to manage your profile, your kids, seniors, pets and even your prized possessions. • CONNECTED FAMILY: Did Cooper make it to practice? Check-in with family and friends with just a tap or share a moment by including a photo and a note from your current location. Lifekey puts peace of mind and security at your fingertips while protecting your loved ones. • SAFETY AND WELL BEING: Take a proactive approach to your safety with Lifekey. Store, protect, and give temporary access to your personal health info when it's needed most. Designed to work with Lifekey wearables like Smart Straps, stickers, patches, and more. Ideal for families, athletes, and kids. • GIVE PETS A VOICE: Tap a Fetch® Pet Tag with your phone and you'll notify that pet's owner of their whereabouts. You'll also get instant access to the pet's human contact and vet records. • FIND MY OWNER: What if you leave your coveted snowboard on the mountain or your bike in the park? Wouldn’t it be nice if it could tell someone who it belongs to and how to contact you? Use this app to load important info on items and so you can be notified when it’s found. • TAP® OS: Our proprietary operating system makes it possible to activate and access a new world of functionality from tap-enabled products anywhere you see the Lifekey logo. Look for it on everything from ski jackets to stuffed animals. See how it works and scan your first Lifekey at https://usetap.app Supported features may vary across devices, phones, and countries. Tap OS is not available in certain countries and languages.
JUSTIN
This app helps you build a personal support network by allowing you to record and store video messages for when you're feeling down. You can invite up to five people to contribute messages, and the app will notify them when you need support. It also offers a collection of inspirational content for you and your support group.
- Record and store video messages
- Invite a support group ('Helping Hand')
- Receive timely support notifications
- Access inspirational content
- Private storage for media
- Guidance for support network
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Justin is an app for giving someone your voice. You record a short voice message, you can add photos and a few words too, and send it as a gift to someone you love. They open it whenever they need to hear you. For their birthday. For a hard day. For when they can't sleep. For when they miss you. For no reason at all, just because. HOW IT WORKS Record, speak naturally, like they're right there with you. Add a photo or a line of text if you want. Seal it, choose when it opens. Right now. On a date. When they feel a certain way. You decide. Send it, they get a notification. When the moment is right, they open it and hear your voice. THOUGHTFUL BY DESIGN Justin guides you through what to say. Each moment has its own prompts, different guidance for a birthday, a hard day, a loss anniversary. For emotionally sensitive moments, Justin draws on guidance from Black Dog Institute to help you say something that actually lands. YOUR SHELF Every gift you receive lives on your shelf, organised by the person who sent it and the moment it was made for. Open them whenever you need to. They never disappear. BUILT FOR THE MOMENTS THAT MATTER - Birthdays and anniversaries - Hard days and sleepless nights - Loss anniversaries - Mother's Day and Father's Day - Work milestones - Or any moment you choose Justin is made by Hecktown, a small team in Sydney Australia.
Screenshots
Verdict
The clearest difference is review sentiment: JUSTIN at 100% against Lifekey's 18%. JUSTIN also leads on update cadence (weekly vs every 2 months). 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. Neither carries in-app purchases, so what you see is what you pay.
Lifekey ships an update every 2 months, JUSTIN weekly. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.
| Parameter | Lifekey | JUSTIN |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (29 ratings) — better | — |
| Positive reviews | 17.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 29 — better | — |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.6 — better | 17.6 |
| Further details — not scored | ||
| Size | 103 MB | 9 MB |
| Age rating | 12+ | 4+ |
| Developer | Lifekey, Inc. | JUSTIN APP |
Customer experience
Lifekey
JUSTIN
In-app purchases
Lifekey
No in-app purchases
JUSTIN
No in-app purchases









