Say it once.
Own the only copy.
SimXmil is an end-to-end encrypted chat, communication-security, and field-utility platform — not just a messenger.
View featuresWhy us
Six reasons security-conscious people pick SimXmil over a regular messenger.
Zero-knowledge by design
Every message is encrypted on-device before it leaves your phone — we can't read it, and neither can anyone else.
More than a chat toolkit
EXIF stripping, clipboard guard, incognito keyboard, and a confirmed panic-wipe come built in, not bolted on.
Works with no signal
BLE tracker detection, RF/Wi-Fi scanners, a compass, and an offline gazetteer keep working when the network doesn't.
Trust you can verify
Diffie-Hellman key exchange and per-message Double Ratchet — with key verification you can check yourself, not just take our word for.
One app, one team
Chat, communication-security, and field tools live under one encryption model — no third-party plugins to trust.
No phone number required
Free voice calls and chats without linking a phone number — identity stays yours.
About SimXmil
SimXmil is not just a messenger. It's an end-to-end encrypted chat, communication-security, and field-utility platform built for military-grade and security-grade use. Every message, call, and file is encrypted on-device before it ever reaches a network — locked by Diffie-Hellman key exchange and a per-message Double Ratchet, with no plaintext ever touching the server.
SimXmil secure messenger keywords: end-to-end encryption, E2E encrypted chat app, military grade encrypted communication, security grade messaging app, Diffie-Hellman key exchange messenger, private encrypted calling app, SimXmil Android app, SimXmil APK download, SimXmil Web secure messenger, no-log private messenger, formerly known as Guhya.
On-device encryption
Nothing leaves your phone unencrypted — ever.
DH + Double Ratchet
A fresh key for every single message.
Zero plaintext to server
We physically cannot read your messages.
Four things in one app
Chat is only one pillar. SimXmil pairs it with security tools, field utilities, and free calls — all under the same encryption model.
Encrypted Chat & Calls
1:1 and group messaging, voice/video calling, and file sharing — all protected by the Double Ratchet, end-to-end, by default.
Communication-Security Toolkit
EXIF stripping, key verification, device-integrity checks, clipboard guard, incognito keyboard, and confirmed panic-wipe — built to protect what you send, not just encrypt it.
Field & Navigation Utility Toolkit
BLE tracker detection, RF/EMF and Wi-Fi scanners, a precision compass, offline gazetteer, and a combined tactical dashboard — useful with or without a signal.
Downloads
GET IT ON Google PlayFrom the blog
All posts →What SimXmil is, in plain terms
SimXmil is a private messenger and security toolkit from Guhya Technologies (Punjab, India). Older listings may still say Guhya — same product family, not a second app.
No phone number required
Chat and free encrypted voice calls without tying the account to a SIM.
Encryption on the device
Content is protected before it leaves your phone, with keys that move forward over time.
More than a chat window
Privacy helpers and field utilities ship in the same app when the network is weak.
Common questions
Straight answers for people comparing private messengers.
What is SimXmil?
An end-to-end oriented messaging and communication-security app from Guhya Technologies — private chat, calls, privacy tools, and field utilities.
Is Guhya a different product?
No. Guhya was the earlier name. SimXmil is the current name for the same product direction and publisher.
Do I need a phone number?
No. Free encrypted chats and voice calls are designed to work without linking a phone number.
Can the company read my chats?
Message bodies are encrypted on the device so they are not intended to sit as readable plaintext on the operator's servers.
Where do I get the app?
Google Play (package com.guhya.app), the official APK on this site, or the web client at guhya.space/chat.
Is it only text chat?
No. Voice calls, privacy utilities, and field tools ship alongside messaging under the same product.
Is SimXmil the same as SimpleX Chat?
No. SimXmil and SimpleX Chat are separate, unrelated messaging apps from different developers — the similar-sounding name is coincidental. SimXmil is published by Guhya Technologies (package com.guhya.app); don't confuse the two products, their reviews, or their features.