Sphere vs Arcus

The simplest way to experience the world’s best AI models on iPhone. Why choose between ChatGPT, Claude, and Gemini when you can have all of them in one place? Sphere is designed from the ground up for iOS, giving you an effortless, iPhone-first experience with zero technical friction. NO SETUP. NO API KEYS. JUST PURE SIMPLICITY. Most multi-model tools feel like complicated developer playgrounds. Sphere is different. There are no API keys to configure, no confusing parameters, and no cluttered web views. Just open the app, type or speak your prompt once, and watch top frontier models generate answers side-by-side in real time. DESIGNED EXCLUSIVELY FOR IPHONE • Native iOS Experience — Clean dark interface, smooth gestures, and responsive haptics built for your thumb. • Swipeable Comparison — Effortlessly swipe through answers from GPT, Claude, Gemini, Grok, and DeepSeek. • Voice Dictation — Speak your ideas hands-free on the go. • Multimodal Attachments — Seamlessly attach photos, documents, and screenshots for instant analysis. • Thread History — Keep every multi-model conversation organized, searchable, and saved. THE FRONTIER MODELS INCLUDED: • OpenAI: GPT 6.1 Sol, GPT 6 Luna • Anthropic: Claude Opus 5.5 & Claude Sonnet 5.5 • Google: Gemini 3.1 Pro & Flash 3.8 • xAI: Grok 4.7 • DeepSeek: R1 Reasoning FREQUENTLY ASKED QUESTIONS Why use Sphere instead of a single AI app? Every model has unique superpowers. GPT excels at logical reasoning and structured formatting. Claude produces nuanced, natural writing. Gemini has unparalleled live web awareness. DeepSeek provides deep mathematical step-by-step thinking. Sphere lets you cross-check and pick the best answer every single time. Do I need my own API keys? No. Sphere handles all model access under one simple subscription. You never have to create developer accounts or manage API credits. How does the subscription work? Sphere requires an active Sphere Pro subscription (available monthly or annually at a 43% discount). Your subscription gives you full access to all frontier models, parallel multi-model streaming, and file attachments with no token calculations or surprise bills. SPHERE PRO Upgrade to Sphere Pro for complete access to frontier models, side-by-side multi-model streaming, and advanced document analysis. Subscriptions are billed securely through your Apple ID and can be managed or canceled anytime in your iPhone Settings → Apple ID → Subscriptions. Privacy Policy: https://mnemosphere.ai/sphere/privacy-policy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Arcus is the AI chatbot and assistant that puts GPT, Claude, Gemini, Grok and many more frontier AI models in a single conversation. Switch models mid-chat without losing your thread, or let Auto mode pick the best one for each question. No more juggling subscriptions. ALL THE TOP AI MODELS - GPT-6 Astra, Sol and Luna from OpenAI - Claude Fable 5.1, Opus 5.5, Sonnet 5 and Haiku from Anthropic - Gemini from Google - Grok from xAI - Auto mode routes every question to the best model for the job AI THAT DOES REAL WORK - Live web research with citations you can check - Ask questions about your documents: PDF, Word, Excel, PowerPoint, CSV and code files - Summarize contracts, reports and spreadsheets with the key numbers pulled out - Interactive charts for stocks, budgets and comparisons - Write documents and export them to PDF in one tap - Architecture and flow diagrams - Execute code in a sandbox - Send a photo and ask anything - Memory for your preferences and projects across conversations DESIGNED FOR PERFECTION Fast, clean and quiet. No clutter, no dark patterns, no ads. PRIVATE BY DEFAULT Your conversations are never used to train models. Encrypted in transit. Delete any chat, file, memory or your whole account whenever you want. Sign in with Apple and start in seconds. ARCUS UNLIMITED (auto-renewable subscription) - Monthly and Annual plans unlock unlimited usage and all frontier models. - Payment is charged to your Apple Account at confirmation. Subscriptions renew automatically unless canceled at least 24 hours before the end of the period. Manage or cancel anytime in your Apple Account settings. Terms of Use (EULA): https://heyarcus.com/terms Privacy Policy: https://heyarcus.com/privacy