Comparison

Celestis vs Edge Mind Ai

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Celestis

This AI assistant empowers professionals with private, on-device intelligence for document analysis and knowledge retrieval. It offers offline capabilities, custom AI models built from your data, and supports various AI providers for ultimate flexibility and data sovereignty.

Highlights
  • On-device AI with Apple Intelligence
  • Offline AI capabilities
  • Private Capsules for custom AI models
  • Support for multiple AI providers
  • Near 100% accurate, sourceable answers
  • Document ingestion from various formats
Features
Read full description

Celestis: Private AI for Your Documents Your Knowledge. Your Data. Your AI. Celestis is an intelligent AI platform built for professionals who demand accuracy, privacy, and the freedom to work anywhere. Whether you're on a factory floor, aboard an aircraft, in a maintenance bay, or off the grid, Celestis brings full AI power to the edge and even completely offline. Celestis doesn't just chat. It understands your documents, learns from your knowledge, and delivers near 100% accurate, sourceable answers powered by an Adaptive-RAG engine. AI to the Edge: Offline. Anywhere. Always. Celestis Mobile supports on-device AI powered by Apple intelligence, letting you take your AI-powered knowledge completely offline. Get instant, accurate answers no matter where you are. - Maintenance technicians accessing service manuals in remote facilities - Factory workers querying procedures on the shop floor - Airline crews referencing documentation at 35,000 feet - Field engineers troubleshooting without a data connection Your knowledge travels with you. No Wi-Fi. No cell signal. No problem. Private Capsules: Your Data, Your Environment Capsules are the heart of Celestis. Each one is a self-contained, domain-specific AI built from your own documents. Private Capsules go further, running entirely in your environment for total data sovereignty. - Upload PDFs, Word docs, spreadsheets, presentations, CSVs, images, Markdown, and more - Combine Capsules into Pods for cross-domain AI with intelligent routing - Add custom instructions and guardrails per Capsule or Pod - Schedule automatic re-ingestion to keep your AI current Celestis never trains on your data. Your documents are never shared or retained beyond what you authorize. Choose Your AI Provider: Zero Vendor Lock-In Celestis ships ready to use with leading AI models, no API key required or bring your own. - Built-in: Celestis, ChatGPT, Claude, Grok - Open source: Any OpenAI-compatible endpoint - Local LLMs: Ollama and any locally-run model for complete privacy with zero cloud dependency Mix and match providers per Capsule. What Sets Celestis Apart - Near 100% Accuracy: Adaptive-RAG blends semantic and keyword search so every answer is precise and sourceable - On-device AI with Apple Intelligence - Powered by Apple Silicon in the cloud and green datacenters - Reader Mode: Read documents while asking questions in a seamless split view - Super AI: Augment Celestis with your Capsules to create a personalized AI that knows your domain - Simple Credit Pricing: No token math. Credits per action type, in the app or via API - Replicas Marketplace: Publish your Capsules, earn credits when others use your knowledge, creators keep 70% - Connectors: Source knowledge from Gmail, Google Drive, Notion, Slack, or any REST API Key Features - Chat with Celestis AI, always free to start - Domain-specific AI Capsules built from your documents - Offline AI Bundles for full AI access with no internet - Private Capsules running entirely in your environment - Audio Conversations and Text-to-Speech - Bring Your Own Model: ChatGPT, Claude, Grok, Ollama, and more - Capsule Collections with intelligent cross-domain routing - Reader Mode for side-by-side document reading and querying - Image generation and transformation - Live search and deep research - Connectors that connect to your MCP Servers, providing limitless data sources - Team collaboration with shared Capsule pools - Full API access for custom integrations - Analytics for Capsule performance, credit spend, and replica earnings Terms of Service: https://celestis.ai/terms-of-service Privacy Policy: https://celestis.ai/privacy-policy

About

Edge Mind Ai

Features
Read full description

Edge Mind Ai is a privacy-first AI assistant that runs entirely on your iPhone and iPad. Your conversations, prompts, and photos never leave your device — all AI inference happens locally on Apple Silicon. There is no cloud server, no account required, and no data collection. RUN 20+ MODELS, LOCALLY Choose from a curated catalog of 21 open models from Apple Intelligence, Google Gemma, IBM Granite, Meta Llama, Microsoft Phi, DeepSeek, Mistral, Qwen, SmolLM, and Liquid AI. Switch between them mid-conversation. Download only the ones you want; delete them anytime to reclaim space. REAL CHAT, NOT A WRAPPER • Token-by-token streaming responses • Full Markdown rendering with code blocks and syntax highlighting • Multiple conversations — create, rename, and resume sessions from History • Attach a photo from your camera or library and ask a vision model about it • Voice dictation — speak your prompt; responses read back via on-device speech PRIVACY IS THE DEFAULT • Fully offline out of the box. Nothing is uploaded unless you turn on Live Search. • No telemetry, no analytics, no cloud sync, no login required. • A guest profile gets you chatting in one tap. • Optional Face ID / Touch ID / local credentials to protect your space. • Your HuggingFace token (for gated model downloads) is stored in the iOS Keychain. OPTIMIZED FOR YOUR DEVICE Edge Mind Ai detects your chip and tunes itself automatically — context windows of 2K–8K tokens and flash-attention acceleration on supported devices, so large models run within your iPhone's memory without crashing. OPTIONAL LIVE WEB SEARCH Turn on web grounding per prompt when you need fresh information. Bring your own key for Tavily, Brave Search, Serper (Google), or a self-hosted gateway. Search results come back with inline source citations. It's off by default — your AI stays local unless you ask it to look something up. CURATED, NOT THE WILD WEST The model catalog is hand-picked and capability-audited for this app's runtime. Thinking models stream a reasoning lane; vision models accept images; tool-calling models can trigger web search. Badges reflect what the app actually supports, not just marketing claims. WHO IT'S FOR • Privacy-conscious users who want private AI assistance without sending data to a server • Developers and researchers experimenting with local LLMs on iOS • Anyone who needs an AI assistant that works on a plane, underground, or offline • People who want to own their AI — models live on your device, under your control REQUIRES iPhone or iPad with iOS 17 or later and an A14 chip or newer for best results. MLX models run on physical Apple Silicon only (not the simulator). Apple Intelligence model requires a compatible device. Edge Mind Ai is an independent project. It is not affiliated with or endorsed by Apple, Google, Meta, Microsoft, IBM, Alibaba, Mistral, Hugging Face, or Liquid AI. Model weights are the property of their respective creators and are loaded under their original licenses.

Screenshots

Celestis4 screens
Edge Mind Ai4 screens

Verdict

The call

The clearest difference is update cadence: Edge Mind Ai at every 2 days against Celestis's every 2 weeks. Edge Mind Ai also leads on iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Celestis ships an update every 2 weeks, Edge Mind Ai every 2 days. Both last shipped on October 31, 2026.

Scorecard2 real differences · 8 level
Celestis versus Edge Mind Ai: the parameters behind the verdict, then further details
ParameterCelestisEdge Mind Ai
PriceFreeFree
Rating5.0 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 2 weeksEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.017.0 — better
Further details — not scored
Size3.0 GB77 MB
Age rating12+12+
DeveloperCelestis Ai IncVinoth Rajalingam

In-app purchases

None

Celestis

No in-app purchases

None

Edge Mind Ai

No in-app purchases

Questions

Is Celestis free?
Celestis is free to download, with no in-app purchases.
Is Edge Mind Ai free?
Edge Mind Ai is free to download, with no in-app purchases.
Do Celestis or Edge Mind Ai have ads?
Neither Celestis nor Edge Mind Ai shows ads.
Which is updated more often, Celestis or Edge Mind Ai?
Celestis ships an update every 2 weeks, and Edge Mind Ai every 2 days. Most recently, Celestis was updated on October 31, 2026 and Edge Mind Ai on October 31, 2026.

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