Comparison

EXTRA SAFE vs Momenge

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

EXTRA SAFE

Communicate securely with end-to-end encrypted messaging and self-destructing messages. Enjoy anonymous voice and video calls with P2P connections and on-device encryption keys. Prioritizes privacy with identity-free setup and no metadata collection.

Highlights
  • End-to-end encrypted messaging
  • Self-destructing messages and files
  • Anonymous P2P voice and video calls
  • Encrypted file transfer
  • Identity-free setup
  • Private P2P video meetings
Read full description

EXTRA SAFE is a self-custodial messenger with a built-in stablecoin-first wallet — the chat layer for transferring digital assets. Send USD₮, USDC, and other tokens to a contact the same way you'd share a photo, and pay gas in the same stablecoin you send. Pick a name, get your EXTRA SAFE number, and you're set up in seconds. WHAT YOU GET 1. Stablecoins in chat Send USD₮, USDC, and other tokens to a contact in a chat, straight from the attachment menu, wallet-to-wallet. The transfer confirms in seconds. A name or an EXTRA SAFE number is all you need — the app handles addressing and routing underneath. 2. Gas settles in the stablecoin you send You don't have to buy a native coin to send tokenized dollars. The fee comes out of the same stablecoin you're already sending. It's part of UGTP — an intent-based platform running underneath every in-app transaction: you set the outcome, and the platform builds the transaction that delivers it. 3. Self-custodial, stablecoin-first wallet Your keys are generated on your device and stay there. Send across six leading EVM networks — Avalanche (default), Ethereum, Polygon, BNB Chain, Base, and Arbitrum — and the recipient gets the token you selected. The on-chain layer stays invisible. You can send EXTRA SAFE tokens to contacts in chat, or to any external self-custodial wallets or centralized exchanges, from the Wallet tab. 4. Private Tokens Keep the amount you're sending hidden — the transfer itself stays visible. Convert any asset you hold into a Private Token, send it right in the app, and reveal the balance only when you choose. Built on eERC, Avalanche's encrypted token standard, live on Avalanche. 5. Zero-knowledge encrypted chats Every message, file, image, and voice note is end-to-end encrypted: keys live on your device, and content is decrypted only on your contact's device. The architecture makes it structurally impossible for us to read your messages. Every chat runs on your timer: once your contact views the content, it clears after the time you set — from one minute to one month. 6. Gift links Bring your closest people into stablecoin payments with a funded link: stablecoins already inside, a wallet created the moment your contact opens it. Usable from day one. 7. Device-to-device calls Calls connect directly between devices, peer to peer. In-call chat is encrypted and clears when the call ends. Group calls with up to 5 people are free and unlimited. 8. One identity One name, one EXTRA SAFE number — for messages, calls, and assets. Pick a name and start: your identity is created in the app itself, independent of email, phone number, or SIM. One 12-word recovery phrase restores your account and wallet on any device. Your chats, contacts, and assets stay fully yours.

About

Momenge

Features
Read full description

Momenge es una app de mensajería privada con cifrado de extremo a extremo. Envía mensajes, realiza llamadas de voz y videollamadas seguras. No rastreamos, no mostramos anuncios y no vendemos tus datos. Tu privacidad es nuestra prioridad. Para utilizar Momenge es necesaria una suscripción activa. El acceso a la app y a todas sus funcionalidades requiere una suscripción de pago válida. Términos de uso (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Ideal para quienes valoran su privacidad sin sacrificar funcionalidad. Descárgala y conéctate con libertad.

Screenshots

EXTRA SAFE4 screens
Momenge3 screens

Verdict

The call

The clearest difference is in-app purchases: EXTRA SAFE at none against Momenge's 1. Momenge's advantage is update cadence (every 5 days vs fortnightly). On price, ads, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Momenge sells 1 in-app purchase, starting at $99.99 per month. EXTRA SAFE asks for nothing beyond the download.

UpkeepUpdate frequency

EXTRA SAFE ships an update fortnightly, Momenge every 5 days. The most recent releases landed on September 28, 2026 and September 12, 2026 respectively.

Scorecard2 real differences · 8 level
EXTRA SAFE versus Momenge: the parameters behind the verdict, then further details
ParameterEXTRA SAFEMomenge
PriceFreeFree
Rating4.4 (96 ratings) — better—
Positive reviews81.8% of reviews—
Number of ratings96 — better—
Update frequencyFortnightlyEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size92 MB63 MB
Age rating4+4+
DeveloperAlex KeselmanDavid Alonso

In-app purchases

None

EXTRA SAFE

No in-app purchases

1 purchases

Momenge

Subscriptions1
  • Monthly$99.991 Month

Questions

Is EXTRA SAFE free?
EXTRA SAFE is free to download, with no in-app purchases.
Is Momenge free?
Momenge is free to download, with in-app purchases available.
Do EXTRA SAFE or Momenge have ads?
Neither EXTRA SAFE nor Momenge shows ads.
Which is updated more often, EXTRA SAFE or Momenge?
EXTRA SAFE ships an update fortnightly, and Momenge every 5 days. Most recently, EXTRA SAFE was updated on September 28, 2026 and Momenge on September 12, 2026.

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