⬇️ Downloads

Get MumbleChat

Download RamaPay wallet for Android or add the Chrome extension for web access. Decentralized messaging at your fingertips.

📱 Android App

RamaPay wallet with integrated MumbleChat protocol.

📱

RamaPay Wallet

Full-featured Ramestta wallet with native MumbleChat integration. V10 verified relay proofs, E2E encryption, MCT rewards, and resilient connectivity with fallback RPCs.

Version 4.8.0 (V10 On-Chain Verified Relay Proofs)
Release Size ~75 MB
Debug Size ~113 MB
Requires Android 7.0+
Updated March 1, 2026
Build #296 (v4.8.0-296) ✅
⬇️ Download Release APK

Recommended — Optimized & signed (~75 MB)

🛠️ Download Debug APK

For developers — Includes debug logs (~113 MB)

or scan QR code →

📲 Installation Guide

1
Download APK

Click the download button or scan QR code.

2
Enable Unknown Sources

Settings → Security → Allow installation from unknown sources.

3
Install APK

Open the downloaded file and tap "Install".

4
Create/Import Wallet

Set up a new wallet or import existing seed phrase.

5
Register Identity

Go to Chat Settings → Register Identity on Ramestta.

6
Start Chatting!

Add contacts by wallet address and start messaging.

🌐 Chrome Extension

Use MumbleChat from your browser.

🧩

MumbleChat Extension

Browser extension for Chrome/Brave. Send messages and manage identity from web.

Version 1.0.2
Browsers Chrome, Brave, Edge
Status Beta
Updated March 1, 2026
⬇️ Download Extension ZIP 📖 Installation Guide

🧩 Extension Features

  • Create/import wallet
  • Register identity on-chain
  • Send encrypted messages
  • View MCT balance
  • QR code for mobile linking
  • RamaPay dApp compatibility
  • Clean error messages (no raw JSON)
  • Relay node support (coming)

Manual Installation

  1. Download the extension ZIP above
  2. Extract to a folder
  3. Go to chrome://extensions
  4. Enable "Developer mode"
  5. Click "Load unpacked"
  6. Select the extracted folder

🆕 What's New in v4.8.0

V10 On-Chain Verified Relay Proofs — March 1, 2026

🔐

Verified Relay Proofs

Every relayed message is hashed and committed on-chain via RelayProofVerifier V1. Fake proofs are now impossible — if you didn't relay it, you can't claim it.

⛓️

Commit-Verify Flow

Two-phase proof system: first commit message hashes to the blockchain, then submit proof. The smart contract verifies committed count ≥ claimed count before minting rewards.

🛡️

Anti-Fraud Protections

Global hash uniqueness (no double-counting), 35s commit cooldown, 10K batch limit, and authorized consumer pattern. Zero relays = zero rewards, always.

📱

Mobile Proof Generator

Android app now generates and submits verified proofs directly from your phone. Run a relay node and earn MCT rewards with full on-chain verification.

📦

Smaller APK Size

Release build optimized to ~75 MB (down from ~113 MB). Signed release APK with ProGuard code shrinking for faster downloads.

📊

Smart Contract Updates

RelayManager upgraded to V10 with proof verification integration. New RelayProofVerifier V1 contract deployed. Registry V6 with stake recovery.

🌐

Resilient Connectivity

40s network timeouts (matched to AlphaWallet base), fallback RPC URLs, persistent registration cache, and race condition guards for reliable chat initialization.

🧩

Chrome Extension v1.0.2

RamaPay dApp compatibility, RPC forwarding for contract calls, EIP-3085 chain switching, clean error messages, and send form UX improvements.

📊 Platform Comparison

Feature 📱 RamaPay (Android) 🧩 Chrome Extension
Wallet Management ✅ Full ✅ Basic
Identity Registration ✅ Yes ✅ Yes
E2E Encrypted Chat ✅ Yes ✅ Yes
Relay Node ✅ Yes ❌ No
Verified Relay Proofs (V10) ✅ On-Chain ❌ No
Offline Message Storage ✅ Yes ❌ No
Token Transfers ✅ Full ❌ No
DApp Browser ✅ Yes ❌ No
NFT Support ✅ Yes ❌ No
Background Running ✅ Yes ❌ Tab must be open

🚀 Quick Start


┌─────────────────────────────────────────────────────────────────────────┐
│                       GETTING STARTED                                    │
├─────────────────────────────────────────────────────────────────────────┤
│                                                                          │
│   1. DOWNLOAD & INSTALL                                                 │
│      └─ Download RamaPay APK from above                                 │
│      └─ Install on Android device                                       │
│                                                                          │
│   2. CREATE WALLET                                                      │
│      └─ Open app → Create new wallet OR import seed                     │
│      └─ Backup your 12-word seed phrase!                                │
│                                                                          │
│   3. GET SOME RAMA                                                      │
│      └─ Need RAMA for gas fees                                          │
│      └─ Buy from exchange or bridge from other chains                   │
│                                                                          │
│   4. REGISTER IDENTITY (needs ~0.01 RAMA for gas)                       │
│      └─ Chat tab → Settings → Register Identity                         │
│      └─ Choose a username                                               │
│      └─ Confirm transaction                                             │
│                                                                          │
│   5. START CHATTING                                                     │
│      └─ Add contact by wallet address                                   │
│      └─ Send your first encrypted message!                              │
│                                                                          │
│   6. (OPTIONAL) BECOME RELAY NODE                                       │
│      └─ Get 100 MCT tokens                                              │
│      └─ Chat tab → Settings → Become Relay Node                         │
│      └─ Stake MCT and start earning!                                    │
│                                                                          │
└─────────────────────────────────────────────────────────────────────────┘
                

⚙️ System Requirements

📱

Android

OS VersionAndroid 7.0 (API 24) or higher
RAM2 GB minimum, 4 GB recommended
Storage200 MB free space
NetworkInternet connection required
🧩

Chrome Extension

BrowserChrome 88+, Brave, Edge
OSWindows, macOS, Linux
Storage10 MB free space
NetworkInternet connection required