BundesMessengerX vs HAIchat
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BundesMessengerX
A secure and reliable messaging solution designed for German government agencies. It offers end-to-end encryption, user-friendly design, and optimized features for productive daily use in public administration.
- End-to-end encryption
- Secure text, image, file, and voice message sharing
- User-friendly and intuitive design
- Optimized for public administration
- Ad-free communication
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Die nächste Generation für den BwMessenger und BundesMessenger ist da: BundesMessengerX – Gemeinsam chatten. Einfach & sicher. Willkommen beim BundesMessengerX – dem Messenger für Behörden in Deutschland – sicher, zuverlässig, performant und bereit für den produktiven Einsatz – entwickelt von der BWI. Dies ist die neueste, vollständig produktiv unterstützte Messaging-Lösung, abgestimmt auf die besonderen Anforderungen für die Öffentliche Verwaltung. Die App wurde von Grund auf neu entwickelt, um höchste Sicherheitsstandards, bessere Leistung und ein zukunftsfähiges Nutzererlebnis zu gewährleisten: Datenschutz und Vertraulichkeit stehen im Mittelpunkt Neueste Verschlüsselungstechnologien Vollständiger Verzicht auf Werbung sichere, souveräne und störungsfreie Umgebung Produktiv einsetzbar: Alle wesentlichen Funktionen sind stabil verfügbar und für den täglichen Einsatz in Behörden optimiert (alle weiteren folgen iterativ). Hauptfunktionen: Ende-zu-Ende-Verschlüsselung: Schützt Nachrichten zuverlässig vor unbefugtem Zugriff. Nur Sender und Empfänger können Inhalte lesen. Sichere Kommunikation: Versende Texte, Bilder, Dateien, Sprachnachrichten, Umfragen und vieles mehr – vollständig geschützt und vertraulich. Benutzerfreundlich und intuitiv: Ein intuitives, klares Design sorgt für eine leicht verständliche und effiziente Bedienung. Bereit für den Einsatz in deiner Behörde? Los geht’s. Jetzt herunterladen und sicher kommunizieren
HAIchat
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HAI Chat is a fast, private client for the Hetzner Inference API, the experimental platform serving open AI models. Bring your own API key, pick a model, and chat. WATCH IT THINK The models reason before they answer, and HAI Chat streams that thinking live in a collapsible fold. Choose how much thinking a question deserves, or let Automatic pick a model for each message. OPEN MODELS, HUGE CONTEXT Chat with the open Qwen models Hetzner serves, with context windows of 262k tokens. The model list loads live from the API, so new models appear as Hetzner adds them. TASKS Give HAI Chat a goal and it works through it step by step with your calendar, reminders, contacts, places, the weather and the web, also in the background. Every step shows in the chat, and nothing changes without your OK. ON IPHONE, IPAD, MAC, AND APPLE WATCH Your chats sit in a sidebar next to the conversation, and ⌘K opens any of them. On Apple Watch, ask a quick question from your wrist. REPLIES THAT READ PROPERLY Code, tables, lists, and math formulas are laid out properly, and diagrams are drawn on your device. HTML or SVG code can be previewed with the network shut off. ATTACH WHAT YOU ARE ASKING ABOUT Pictures, text files, PDFs, scans, and web pages. Attach a spreadsheet and get exact sums and charts, worked out on your device. Scan a receipt or a business card and add it to Contacts, Calendar, Reminders, or a spreadsheet with one tap. PROJECTS WITH SOURCES Group chats about one topic in a project with instructions and files. A project can hold hundreds of PDFs, each question gets the passages that match, and the answer names the file and page. WORK WITH TEXT, LEARN WITH CARDS Turn a reply into a document and have parts shortened, rewritten, or translated, with every change shown before you keep it. Make study cards from a PDF or a chat and review them when they are due. PROMPTS, STYLES, AND TOOLS Type / for a ready-made prompt or one you saved, pick a response style, and describe yourself once. Models can check the date, calculate, and convert units on your device. KEEP WHAT MATTERS Search, pin and archive chats, save a reply as Markdown or PDF, and back up all chats to one file, protected with a passphrase if you like. Bring your history over from another assistant's data export. TALK AND LISTEN Dictate on your device, or go hands-free with the camera on and ask about what you point it at. Interrupt an answer by speaking. Use the interpreter for a conversation in two languages, or turn a long text into a briefing that keeps playing with the phone locked. OUTSIDE THE APP Siri, Shortcuts, Spotlight, Handoff, the Action button, and a notification when a reply finishes in the background. Share text, links, and pictures in from any app. PRIVATE BY DESIGN There is no account and no tracking. Your API keys, one per profile, stay in the Keychain on this device, and on your Apple Watch once you send one there, and go only to the Hetzner Inference API. Chats are stored on your device, and nowhere else unless you save a backup or switch on iCloud sync, which puts them in your own private iCloud database that the developer cannot read. Turn on the privacy shield and names, addresses, and numbers are swapped for placeholders on your device before a message leaves it. Temporary chats are never stored. Speech runs on your device. Face ID can lock the app. IN ENGLISH AND GERMAN The interface follows your system language. HONEST BY DESIGN AI answers can be wrong. HAI Chat says so right under the message field. REQUIREMENTS You need your own API key for Hetzner's experimental Inference platform, free of charge while the platform is in its experimental phase. The platform and its model lineup may change or be discontinued at any time. That is part of the experiment. HAI Chat is an independent project. It is not affiliated with, endorsed by, or operated by Hetzner. "Hetzner" is a trademark of Hetzner Online GmbH, used here only to describe compatibility.
Screenshots
Verdict
The clearest difference is iOS requirement: BundesMessengerX at 18.3.1 against HAIchat's 26.0. On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
BundesMessengerX ships an update every 2 months, HAIchat monthly. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.
| Parameter | BundesMessengerX | HAIchat |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 75.0% of reviews | — |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, Apple Watch — better |
| Requires iOS | 18.3.1 — better | 26.0 |
| Further details — not scored | ||
| Size | 324 MB | 40 MB |
| Age rating | 4+ | 17+ |
| Developer | BWI GmbH | Stefan Weiberg |
In-app purchases
BundesMessengerX
No in-app purchases
HAIchat
No in-app purchases









