Comparison

Qlavis vs Reason Space Messenger

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

Head to head
About

Qlavis

A secure messaging app offering end-to-end encrypted private chats, voice, and video calls using post-quantum cryptography. It prioritizes user privacy with no phone number or email registration, and features secure rooms for group communication.

Highlights
  • Post-quantum cryptography for all communications
  • End-to-end encrypted messages, calls, and files
  • No phone number or email required for registration
  • Secure group rooms with access control
  • Optional in-chat cryptocurrency wallet
  • Screen recording and screenshot protection
Read full description

Qlavis is a messenger where everything is sealed with post-quantum cryptography: messages, voice and video calls, photos, videos, documents, and profile photos. Your identity too: it carries a post-quantum signature of its own. End-to-end encrypted from the first minute, with nothing to configure. No phone number, no email. Your identity is created on your iPhone as a 24-word recovery phrase that only you hold. Nothing to verify, nothing to register. Your keys never leave the device, protected by the Secure Enclave, so nobody, not even Qlavis, can read your messages or pass themselves off as you. Built for the quantum era Behind every conversation stands the complete NSA CNSA 2.0 algorithm suite: ML-KEM-1024 key encapsulation, AES-256-GCM encryption, ML-DSA-87 signatures, and SHA-512 key derivation. Key encapsulation and signatures both run at NIST security Level 5, the highest category defined, so what you say today stays unreadable to the computers of tomorrow. A signature instead of a promise The signature on your identity is ML-DSA-87. The other side checks it on their own device rather than taking the server's word, so no future computer can pass itself off as you or forge who said what. Calls, not just messages Audio and video run on the same post-quantum keys as your chats. A call that cannot establish them does not connect: that is a condition, not an option. If you wish, turn on relay mode and the other side never sees your IP address. Rooms for your people Create a room, add members by @handle, hand out roles and decide who can post. Text, photos, videos and voice messages in a room are encrypted the same way as in one-to-one chats. Every membership change is signed and verified on each member's device, the room's name and photo are encrypted too, and the only way in is an invitation: there are no public links. The Room Seal, a short code every device computes on its own, lets members confirm they all see the same room. A server that sees nothing Our server is a blind relay: it stores no message content, cannot decrypt a single byte, and deletes encrypted envelopes the moment they are delivered. What we never hold can never be leaked, sold, or handed over. Everything you expect • Text, voice messages, photos, videos, and documents • Read receipts and delivery status • Encrypted profile photos • App lock with Face ID • Qlavis Screen: screen-recording and screenshot protection for your chats • All local data encrypted at rest on your device An optional wallet Crypto, right in the chat: send XLM, USDC, XRP, or RLUSD inside a conversation, encrypted like any other message. Keys are generated on your device, never leave it, and belong to you alone. Qlavis never holds funds, has no access to them, and charges no fees. An open protocol The full protocol specification is published at qlavis.app/architecture.html. The protocol design, rooms included, has passed formal verification, and the server's behavior is tested continuously in production. Privacy Policy: https://qlavis.app/privacy.html Terms of Service: https://qlavis.app/terms.html Support: https://qlavis.app/support.html

About

Reason Space Messenger

Features
Read full description

Reason Space — мессенджер с пространствами: отдельное место для компании друзей, команды или клуба, со своими чатами, звонками и каналами. ЧАТЫ И БЕСЕДЫ Личные переписки и группы: ответы, реакции, пересылка, голосовые и видеосообщения-кружки. Некогда слушать — нажмите «расшифровать» и прочитайте текстом. ПРОСТРАНСТВА ПО ВАШИМ ПРАВИЛАМ Текстовые и голосовые каналы, роли и права участников, приглашения по ссылке. Работает и для тройки друзей, и для сообщества на сотни человек. ЗВОНКИ ПО ССЫЛКЕ Аудио и видеозвонки один на один, голосовые каналы для посиделок и созвоны по ссылке — собеседнику даже не нужен аккаунт. ИИ-КОНСПЕКТЫ ЗВОНКОВ Включите запись — после разговора будет готов конспект с темами и таймкодами. Забыли, о чём договорились, — откройте и проверьте. МЕДИА В ОРИГИНАЛЬНОМ КАЧЕСТВЕ Фото, видео и файлы до 5 ГБ — без пережатия. ПРИВАТНОСТЬ ПО УМОЛЧАНИЮ Секретные чаты со сквозным шифрованием, скрытые чаты, шифрование данных при хранении. Текст уведомлений не проходит через сторонние сервисы — приложение забирает его напрямую с наших серверов. Данные хранятся в России. МЕЛОЧИ, КОТОРЫЕ РАДУЮТ Рисунки на аватарках друзей, стикеры и анимированные эмодзи, папки чатов, тёмная тема. Reason Space — для пользователей от 14 лет. Вопросы и идеи: reasonspace@sandboxer.ru

Screenshots

Qlavis4 screens
Reason Space Messenger4 screens

Verdict

The call

The clearest difference is update cadence: Reason Space Messenger at daily against Qlavis's every 2 days. Reason Space Messenger also leads on iOS requirement (16.4 vs 26.0). On price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Qlavis ships an update every 2 days, Reason Space Messenger daily. Both last shipped on October 2, 2026.

Scorecard2 real differences · 8 level
Qlavis versus Reason Space Messenger: the parameters behind the verdict, then further details
ParameterQlavisReason Space Messenger
PriceFreeFree
Rating5.0 (5 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 2 daysDaily — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhoneiPhone
Requires iOS26.016.4 — better
Further details — not scored
Size64 MB83 MB
Age rating17+4+
DeveloperQlavis, Inc.Sandboxer

In-app purchases

None

Qlavis

No in-app purchases

None

Reason Space Messenger

No in-app purchases

Questions

Is Qlavis free?
Qlavis is free to download, with no in-app purchases.
Is Reason Space Messenger free?
Reason Space Messenger is free to download, with no in-app purchases.
Do Qlavis or Reason Space Messenger have ads?
Neither Qlavis nor Reason Space Messenger shows ads.
Which is updated more often, Qlavis or Reason Space Messenger?
Qlavis ships an update every 2 days, and Reason Space Messenger daily. Most recently, Qlavis was updated on October 2, 2026 and Reason Space Messenger on October 2, 2026.

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