Building the Future

Simple Tools. Powerful Results.

Cosmos One builds apps that bring AI where it actually helps, turning everyday tasks into one-tap actions so you get more done with less effort.

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Apps Built for You

Scan a document, schedule a meeting, polish an email, all in seconds. Our apps bring AI where it actually helps, turning everyday tasks into one-tap actions so you get more done with less effort.

Some apps work entirely offline, keeping your data private and on your device. Others connect to Cosmos Services for intelligent features that get smarter over time. All are free to use, or go ad-free with a single one-time purchase.

Cosmos Services

Cosmos Services

Web

Secure AI services platform with Google authentication, subscription management, and usage-based quotas, powering intelligent features across your apps.

  • AI gateway with guardrails - Route to OpenAI or Anthropic with automatic per-user cost caps, rate limiting, and token-level usage tracking. Your AI budget stays predictable no matter how many apps you run.
  • Ship features, not infrastructure - Google sign-in, JWT rotation, subscription billing via RevenueCat, free trials, and quota enforcement - all server-side, all secure, all out of the box. Your app just calls the API.
  • One platform, every client - Register Android, iOS, web, or Chrome extension apps from a single admin console. Each gets isolated users, configurable models, and independent rate and cost limits.
Cosmos Scanner

Cosmos Scanner

Android

Securely scan and organise all your sensitive documents with military-grade encryption.

  • Your documents never leave your device - Everything is encrypted with AES-256 and stored locally. No cloud uploads, no corporate servers, no risk of a data breach - your medical records and personal files stay yours.
  • Find any document in seconds - OCR text extraction and smart metadata search let you instantly find a referral, receipt, or test result by doctor name, date, or facility. No more scrolling through your camera roll.
  • Fraction of the price, zero ads, zero tracking - Most scanner apps charge a premium monthly fee and upload your data to their cloud. Cosmos Scanner gives you unlimited scans at a fraction of the cost with no ads and no analytics - just privacy.
Cosmos Calendar

Cosmos Calendar

Android

Cosmos Calendar is an AI-powered calendar assistant that lets you manage your schedule through natural conversation.

  • Chat to schedule - Create, update, and delete calendar events by simply typing in natural language. No forms, no friction.
  • Paste any message, done - Forward a clinic text, email, or appointment confirmation and the AI extracts the event details automatically.
  • Synced with Google Calendar - Your events stay in sync with Google Calendar so everything is always up to date across all your devices.
LumenWrite

LumenWrite

Chrome Extension

AI-powered writing assistant for grammar, clarity, and translation.

  • One click, right where you type - A floating button appears on any text field. Click it to fix, improve, or translate your text without leaving the page.
  • No more copy-paste to ChatGPT - Grammar correction, tone improvement, and translation into 10+ languages happen inline, saving you the back-and-forth with separate AI tools.
  • Review before you send - Every rewrite shows in a preview popup so you stay in control. Edit the result, copy it, or dismiss it - nothing changes without your approval.
Cosmos Chat

Cosmos Chat

Android Beta

Your private AI companion - 12 unique personas, voice chat, and zero cloud dependency. Chat with a Study Buddy, Code Helper, Fitness Coach, or create your own. Runs entirely on your phone.

  • AI personas with personality, not just a chatbot - Choose from 12 built-in characters - a creative writer, a stoic philosopher, a language tutor, even a dad-joke machine - each with distinct personality, greeting, and visual theme. Create your own custom personas with full control over behaviour, tone, and appearance. Every conversation feels purposeful because each persona is optimised for a specific kind of help.
  • 100% on-device processing, zero data leaves your phone - Download the AI model once, then everything runs loca - no internet, no API keys, no cloud calls, no tracking. Your conversations are stored in your phone's private storage and never transmitted anywhere. Unlike cloud-based AI apps, there's nothing to leak, no servers to go down, and no subscription that stops working when you cancel.
  • Voice and text chat in multiple languages, no subscription required - Speak or type in English, Chinese, Korean, or Japanese with on-device speech recognition that works offline. The app is free with optional one-time ad removal - no recurring fees, no token limits, no usage caps. Your AI assistant is always available, even in airplane mode.
Cosmos Studio

Cosmos Studio

Web Beta

Design professional Google Play Store screenshots and feature graphics in your browser - pixel-perfect templates, 3D phone mockups, and full export control with zero design experience required.

  • Google Play-compliant out of the box - Every template matches Google Play's exact specs: portrait screenshots at 1080×1920, feature graphics at 1024×500. Safe zone overlays warn you before content lands in cropped regions. No more guessing dimensions or reformatting rejected uploads.
  • 3D phone mockups with studio-quality lighting - Showcase your app on a realistic Samsung Galaxy S24 Ultra rendered in real-time. Position, rotate, and scale up to three phones in 3D space with professional three-point lighting - the polished look of a design agency, without the agency.
  • Fully browser-based, your files never leave your device - No account, no cloud, no subscription. Projects save locally with full state restoration, and designs export as high-quality PNG or JPEG with configurable quality. Your screenshots, your machine, your control.

Our Mission

We believe technology should empower, not complicate. At Cosmos One, we build tools that respect your privacy while helping you stay organised and productive.

Every app we create is designed with one goal: to make your digital life simpler. From scanning documents to perfecting your writing, we focus on what matters most - you.

Simple tools. Powerful results. Your privacy, always.