Chatika vs Mark To Do

Chatika is a free AI chat client that gives you complete freedom, flexibility, and privacy in your AI conversations. Think of it as a highly customizable private browser or Lego builder for AI chat — a pure client that facilitates communication with AI providers (cloud or local), without storing anything outside your device. Currently, the app UI supports English and 中文 (Simplified Chinese). AI chats themselves can be carried out in most languages. (More UI language options coming soon!) Key Features: • Bring Your Own Key – Chat with any supported AI model using your own API keys. No subscriptions required. • Rich Chat Actions – Select & quote, fork conversations, revert messages, regenerate replies. • Web Search – Search and chat with real-time information from the internet. • Image Support – Send images to compatible AI models. • Persona System – Built-in personas with the option to create and customize your own. • Custom System Prompts – Inject or modify prompts to shape AI behavior. • Dynamic Settings – Change parameters mid-conversation. • Thought Process View – See how reasoning models think step-by-step (for supported models). Chatika is designed for users who value control, privacy, and customization in their AI interactions. Whether you’re a writer, developer, researcher, or simply curious about AI, Chatika has a mode and persona that fits you. This is an indie project with no monetization plans. Your support and feedback are always welcome!

Highlight What Matters — Mark Mark is more than a to-do app. Assign highlight colors to prioritize tasks at a glance, and never miss a deadline with D-day badges. [KEY FEATURES] Highlight Colors Give each task its own color to instantly see what matters most. Custom colors supported. Spaces Organize tasks by purpose — work, personal, study — with customizable, reorderable spaces. D-day Badges Tasks with due dates automatically show a D-day countdown. Never miss a deadline. Home Screen Widgets Check your progress and today's tasks from your home screen without opening the app. Small and Medium sizes supported. Kanban Board Visualize and manage task status with a Kanban board view. Image Attachments Attach photos directly to tasks for more detailed records. Flag & Notes Flag important tasks and add notes for more details. iCloud Sync (Paid) Automatically sync tasks across all your Apple devices. One-time purchase, no subscription. Multi-language Support Available in Korean, English, and Japanese. Custom App Title Rename the app in Settings — reflected on widgets too. Dark Mode Supports Light, Dark, and System appearance settings.