Find anyone.
Anywhere. Anytime.
Send a single SMS. Get back exact GPS location, address, distance, “Open in Maps”. Works in tunnels, on planes, in basements — anywhere your phone has a signal bar. No data plan, no Wi-Fi, no app required on the other side. And the SOS alarm bypasses silent and Do Not Disturb.
See Kaizen Locator in action
One ping — lat, long, address, distance back over plain SMS. Zero internet on either side.
Three real situations. One simple tool.
Kids on the way home
School bus running late? Picnic with friends? One ping confirms exactly where they are — no need for them to remember to call back. Works even if their data is off or they’re in a low-signal area.
Senior parents who forget
Phone on silent. Missed your call. They’re fine — just at the temple, or with the neighbour. One Kaizen ping gives you their location and address. Mark them as FAMILY and they can fire an SOS that breaks through your silent mode if they ever truly need help.
Emergencies, period.
Network down. Tower congestion. Festival evening. Internet apps fail; SMS still goes through. Locator works on the most unreliable day of the year. SOS alarm overrides silent and DND on the receiver’s phone — so you can’t miss an actual emergency.
Three taps. Plain SMS. Done.
Both phones need Kaizen Locator installed. After that, it’s pure SMS — no Internet, no accounts, no servers in between.
Add trusted contacts
Pick from your phonebook or enter a number manually. Default policy is Ask each time — nobody can ping you without your approval until you say so.
Tap Ping Now
Locator sends a tagged SMS like [KZL-REQ:abcd]. The receiver’s phone reads the tag, checks your policy, and replies with their location — or asks them first.
Get exact location
Latitude, longitude, full address, distance from you, time the GPS was taken. Open in Maps with one tap. Freshness shown as LIVE if under 60 seconds.
You decide who can find you, and when.
Every contact has its own policy. The default for new senders is Ask each time — the safest possible setting. You can upgrade trusted contacts to Always Allow, lock untrusted ones out with Always Deny, or grant a temporary Always-Allow for the next hour, day, or week.
Ask each time
Default for any new sender. A dialog pops up; you tap Allow / Deny / Always-Allow. Nothing leaves your phone until you say yes.
Always allow
Trusted contacts auto-reply with your location. Optionally time-bounded — pick 1h, 4h, 24h, or a full week. Auto-reverts to Ask each time when the deadline passes.
Always deny
Silently drop incoming pings. The sender gets a polite “can’t share right now” reply — not a not-installed error.
Family (SOS)
Auto-replies + can sound an emergency alarm on your phone even when silent or DND is on. Use only for genuine emergency contacts.
An alarm that won’t be missed.
Phone on silent? Do Not Disturb on? It doesn’t matter. When a Family contact fires an SOS, Locator plays the system alarm tone (the only stream Android lets bypass DND), drops a full-screen RED takeover, vibrates with a heartbeat pattern, and lights up your screen for 60 seconds — until you tap STOP.
- Foreground service starts instantly on SMS receipt — no app open required
- Sound on alarm stream — loud, unmissable, DND-bypass
- Full-screen-intent notification unlocks the lock screen
- Auto-stops after 60 seconds OR when the receiver hits STOP
- Auto-replies with the receiver’s location and a confirmation:
[KZL-SOSACK:abcd:Xs] - Rate-limited to once every 5 minutes per contact — no spam abuse
- Only contacts you mark as Family can ever fire SOS
Recurring · Silent · Group
Recurring auto-pings
Every 10 minutes, 1 hour, 4 hours, or once a day — for any trusted contact. Useful for keeping tabs on a child’s commute home or an elderly parent through the day. Off by default; enable per-contact.
Silent ping Pro
For Always-Allow contacts: their phone replies without showing them a notification. Useful for reassurance pings — you don’t want to interrupt every 10 minutes.
Group ping Pro
One tap to ping multiple trusted contacts at once. Family check-in during a holiday, picking the closest person to a destination, anything where you need locations of several people fast.
The SMS messages it sends.
Locator tags every message with a 4-character correlation token [KZL-XXXX]. Untagged SMS is ignored — nothing else reads or interferes with your inbox.
SMS rates apply per your carrier. No data charges — ever.
Nothing leaves your phone except SMS you authorise.
No cloud accounts. No login. No analytics. No crash reporting. No telemetry. Zero servers in the entire data path. Your trust list, your block list, your policy, your ping history — everything is stored locally on your device. We don’t see anything because there’s nothing to see.
- No HTTP backends — the app makes zero network calls except (optionally) for reverse-geocoding addresses
- SMS is the only IPC channel — if you trust SMS, you can trust Locator
- Trust list, block list, ping history:
SharedPreferenceson-device only - Open about exactly what permissions are requested and why — see Help » Permissions
- License check is the only server call — and even that is silent on free tier
14 languages, fully translated
Every screen, every dialog, every SMS template. No half-translated UI strings.
Free to try. $11 lifetime to go unlimited.
Lifetime is one-time. No subscription, no renewal, no nag screens. Pay once, use forever.
Free
- SMS-based location pings (daily limit)
- Per-contact policies (Always allow / Ask / Deny)
- Family + SOS alarm
- Recurring pings
- 14 languages
- Silent ping
- Group ping
- Unlimited daily pings
Lifetime
- Everything in Free
- Unlimited pings, every day
- Silent ping
- Group ping
- Priority email support
- All future updates
- Transferable to another device
- No subscription, no renewal, ever
Common questions
[KZL-…] tag. If the other phone doesn’t have Locator, your SMS arrives in their normal inbox as a regular text and they can reply manually if they choose.Know first. Get more.
Join our WhatsApp community for early access, free license giveaways, and direct dev support. No spam, ever. Your number stays private.