Comparison

MemofyAI vs Celestis

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

Head to head
About

MemofyAI

Features
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■ Your messy notes deserve better. Scribbled meeting notes you can't read later. Quick ideas jotted down between tasks. A to-do list buried in a wall of text. MemofyAI turns your rough, unstructured notes into perfectly organized documents — automatically. Just type (or paste) your messy text. AI instantly adds headings, bullet points, and structure. Done. ■ Perfect for... - Meeting notes that need to become proper minutes - Random ideas that deserve structure - To-do lists that need checkboxes and priorities - Lecture notes that need to be study-ready - Handwritten notes or whiteboards — just snap a photo ■ 5 Smart Modes 1. Auto-detect — AI figures out what kind of note it is and formats accordingly 2. Memo — General notes with clean headings and sections 3. Meeting Minutes — Adds date, attendees, decisions, and action items 4. TODO — Creates prioritized checklists 5. Idea — Organizes your brainstorm with next steps ■ Camera Input — Read Handwriting Instantly Point your camera at handwritten notes, a whiteboard, or printed text. The app reads it and organizes it automatically. No more typing things out by hand. ■ On-Device AI for Privacy Choose the on-device AI mode and the AI runs directly on your phone. - In on-device mode, your notes stay on your device - Nothing is uploaded to any cloud - No one else can see your data — ever Confidential work notes, personal journal entries, sensitive ideas — type freely. ■ Works Offline After downloading the on-device AI model, you don't need an internet connection. Use it on a plane, underground, or anywhere without signal. ■ Home Screen Widgets Add a widget to your home screen or lock screen. Start writing notes with a single tap — no need to open the app first. ■ Meet Memobee — Your AI Buddy A cute, friendly assistant that lives in the app. Tap Memobee to start organizing your notes. A small touch of joy in your productivity. ■ Use Your Notes Anywhere - Copy to clipboard and paste into any app - Share with colleagues or friends - Save as a file for backup - Works great with Obsidian and other note apps ■ Why MemofyAI? - AI organizes your notes automatically - 5 modes for every type of note - Camera reads handwriting and whiteboards - On-device AI mode keeps your notes on your phone - Works without internet - Home screen and lock screen widgets - No ads Download now and never struggle with messy notes again.

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

Screenshots

MemofyAI4 screens
Celestis4 screens

Verdict

The call

The clearest difference is update cadence: Celestis at every 2 weeks against MemofyAI's monthly. MemofyAI's advantage is iOS requirement (16.0 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

MemofyAI ships an update monthly, Celestis every 2 weeks. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

Scorecard2 real differences · 8 level
MemofyAI versus Celestis: the parameters behind the verdict, then further details
ParameterMemofyAICelestis
PriceFreeFree
Rating—5.0 (4 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—4 — better
Update frequencyMonthlyEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhoneiPhone, iPad — better
Requires iOS16.0 — better26.0
Further details — not scored
Size126 MB3.0 GB
Age rating4+12+
DeveloperHaruki UriuCelestis Ai Inc

In-app purchases

None

MemofyAI

No in-app purchases

None

Celestis

No in-app purchases

Questions

Is MemofyAI free?
MemofyAI is free to download, with no in-app purchases.
Is Celestis free?
Celestis is free to download, with no in-app purchases.
Do MemofyAI or Celestis have ads?
Neither MemofyAI nor Celestis shows ads.
Which is updated more often, MemofyAI or Celestis?
MemofyAI ships an update monthly, and Celestis every 2 weeks. Most recently, MemofyAI was updated on October 24, 2026 and Celestis on October 23, 2026.

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