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FiveSheep OÜ

We make exceptional apps for exceptional people.

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FiveSheep is an independent software studio based in Estonia, founded by German developers Marco Quinten and Jann Schafranek. The company builds powerful and user-focused apps for iOS and macOS, including Mister Keyboard, Chatalyzer, and Chathouse. With a focus on novelty, customization and productivity, FiveSheep builds tools that give users more control and better experiences across Apple platforms.

What We Make

Mister Keyboard icon

Mister Keyboard

A uniquely customizable iOS keyboard with pull-down keys that double your input options, clipboard history across devices, snippets, swipe typing, and multi-language support. It features a powerful layout editor, over 50 themes, and even built-in games.

Chatalyzer icon

Chatalyzer

Dive into your private chat history with fun, insightful stats. Import WhatsApp, LINE, and other conversations to reveal things like who swears the most, who spams emojis, your most-used words, or how your response habits stack up over time — all fully local and private.

Chathouse icon

Chathouse

A beautiful AI chat playground designed for iPhone. Engage in character roleplay, use local models with ollama, chat with top AI providers (including ChatGPT, Claude, Gemini, Grok and more), or bring your own key.

This is a curated selection — we've built over a dozen other apps across iOS and macOS.
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People

The humans behind FiveSheep.

Our Philosophy

We started FiveSheep because we were tired of bloated apps, locked-down platforms, and half-baked ideas pushed to market. We believe great software doesn't have to come from big teams — it just needs care, clarity, and a willingness to go deep. Whether it's the most customizable keyboard on iOS or a novel AI chat app, we build tools that respect the user, work offline, and stay out of your way.

Founders

Marco Quinten photo

Marco Quinten

Co-Founder / Full-Stack Developer

With a background in web development, fintech, and blockchain, Marco now focuses primarily on building iOS apps at FiveSheep. He works on front-end development, interface design, and overall product direction, and also handles most of the company's graphic design and occasional web work. Marco is based in Bangkok.

Jann Schafranek photo

Jann Schafranek

Co-Founder / iOS Developer

Jann has been building iOS apps since the Objective-C days, long before Swift or SwiftUI were introduced. He brings deep expertise in Apple frameworks, app architecture, and performance optimization. At FiveSheep, he focuses on the technical foundation and core systems behind the apps. Originally from Fulda, he now lives in Nuremberg, Germany.

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Mister Keyboard

Our customizable keyboard app.

Quick Summary

Mister Keyboard gives you full control over how you type on iOS. From pull-down keys and layout editing to animated themes, snippets and cross-device clipboard management. Whether you want a minimalist keyboard or something fun and flashy, it adapts to how you type. We can confidently say that Mister Keyboard is the most customizable keyboard ever built for iPhone.

Free Access for Journalists

We offer unrestricted access to the fully unlocked beta version of Mister Keyboard for journalists, reviewers, and press contacts. You can explore all premium features via our special TestFlight link:
TestFlight logo https://testflight.apple.com/join/wVRqHTbF

Screenshots

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Customized Keyboard
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Theme Gallery
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Layout Editor
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Chatalyzer

Our advanced chat analytics tool.

Quick Summary

Chatalyzer lets you explore your chat history with fun, privacy-friendly analytics. You can import WhatsApp, LINE, or other conversations and discover who sends the most emojis, who replies fastest, which words you use most, and how your messaging habits stack up over time. Everything is fully private and runs locally, with no accounts and no cloud processing.

Free Access for Journalists

We offer unrestricted access to the fully unlocked beta version of Chatalyzer for journalists, reviewers, and press contacts. You can explore all premium features via our special TestFlight link:
TestFlight logo https://testflight.apple.com/join/9A3kccy7
Note: The TestFlight version requires a simulated purchase to unlock all features. You will not be charged.

Screenshots

App Screenshot
Chat Import
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Messaging Statistics
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Emojis & Link Statistics
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Chathouse

Our private AI chat app.

Quick Summary

Chathouse is a private AI chat app for iPhone and iPad that puts you in control. You can talk to characters in the form of downloadable "character cards", connect to your local ollama instance for fully local inference, use your own API key to access services like ChatGPT, Claude, Gemini, Deepseek and more without needing to pay for a subscription, or simply subscribe to Chathouse Pro or Pro+ to unlock access to 50+ models, with the ability to freely switch between them at any time. It's fast, flexible, and built for people who care about privacy, customizability, and choice.

Free Access for Journalists

We offer unrestricted access to the fully unlocked beta version of Chathouse for journalists, reviewers, and press contacts. You can explore all premium features via our special TestFlight link:
TestFlight logo https://testflight.apple.com/join/p7eJg5ac
Note: The TestFlight version requires a simulated purchase to unlock all features. You will not be charged.

Screenshots

App Screenshot
Chat with AI
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Provider Selection
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Character Import
You're welcome to pass this doc around to other press folks; just please keep it within the media circle.