Comparison

Liquid Apollo vs On‑Device AI

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

Head to head
About

Liquid Apollo

Access a wide range of AI language models, both locally on your device and through cloud APIs. This app allows you to chat with open-source models, connect to your own hosted LLMs, or utilize services like OpenRouter for broad model access.

Highlights
  • Local LLM support
  • OpenRouter integration
  • Custom backend connections
  • Private AI chat
  • Access to open-source models
  • Connect to hosted LLMs
Features
Read full description

Chat with private, local AI models, connect to every open source AI, or your own locally-hosted private LLMs. Apollo is your own customizable client for accessing language models from all around the web. Local model support (powered by LEAP, a Liquid AI product): run smaller LLMs privately and securely on-device. OpenRouter support: bring an OpenRouter API key to chat with every model on the web. Just sign in by creating an account over at OpenRouter and paste it in to Apollo to access nearly every model, from open source models like Meta Llama 3, to closed source models like OpenAI’s ChatGPT-4. Custom Backend support: want ChatGPT at home? Run an LLM on your computer with tools like LM Studio or Ollama and connect to it with Apollo to host your own private ChatGPT-like mobile app for your family.

About

On‑Device AI

Transform your device into a private AI assistant for meetings and complex tasks. Features include speaker diarization, live transcription, and specialized subagents for research, analysis, and writing. Control your AI via messaging apps, with options for 100% offline processing or cloud connectivity.

Highlights
  • Speaker Diarization for meeting transcripts
  • Real-time live transcription
  • Natural AI speech generation
  • Deploy specialized AI subagents
  • AI-powered web browser automation
  • Control AI via messaging apps
  • 100% offline processing option
Read full description

On-Device AI puts chat, listening, transcription, notes, and research in one private app for iPhone, iPad, Mac, and Apple Vision Pro. Your data stays on your device. Download a model once and keep working on a plane, on the subway, or without a signal. Chats, documents, recordings, and notes stay on your device. Online providers and web features are optional and work only after you enable them. ONE APP, YOUR WAY Open every workspace from a customizable Menu. Keep favorites under Pinned and everything else close by under Available. AI CHAT Chat with local or cloud models. • Run local models from families such as Gemma, Qwen, DeepSeek, and Mistral, or connect your own provider account • Browse, download, and manage models that fit your device, including ones for text, vision, reasoning, and tools • Drop in documents, images, and scanned PDFs; approve private on-device OCR only when a PDF needs it • Fork any conversation and compare several models on the same prompt • Let the model use tools for calculations, web requests, documents, Calendar, and Reminders, and review proposed changes before they apply • Create reusable Agent Profiles, then add AI Skills, MCP servers, and tools from one clearer Agent Workflows setup • Keep facts you repeat often in Global Memory LISTEN LIBRARY AND RSS FEEDS Read less, listen more. • Turn PDFs, Markdown, plain text, web articles, and scanned books into a listening queue • Scan photographed pages, correct the OCR the app runs on device, and keep each page with its spoken text • Follow sites through RSS, Atom, and JSON feeds, then send articles to Up Next • Choose Apple voices or local neural voices, follow along in the reader, and set a sleep timer VOICE NOTE, VOICE TYPING, AND TEXT TO SPEECH Speak instead of typing, and listen instead of reading. • Record and transcribe meetings, lectures, interviews, and quick ideas • Dictate with Voice Typing on Mac or the voice keyboard on iPhone and iPad • Transcribe with Apple Speech, Whisper, Parakeet, Nemotron, Qwen3-ASR, MOSS, and other engines • Turn text, or text captured from a photo, into audio with Apple voices, Kokoro, Supertonic, VoxCPM2, IndexTTS2, and other engines • Export transcripts as text, subtitles, or Markdown AI SEARCH AND AI BROWSER Research with a second pair of hands. • Search the web in a conversation and let the model read the results for you • Browse with tabs, profiles, history, and downloads, then ask your model to read, assist, or act on the page • Hand a task to the browser agent, watch each step, and take over whenever you want KNOWLEDGE AND TEXT NOTE Give your AI your own material to work from. • Add PDFs, text, Markdown, code, images, and website content to a private searchable library • Write and edit Markdown notes in the app • Import AI chats, voice notes, Text to Speech items, and AI Search results • Tune retrieval and index edited content again APP HELP Ask how a feature or setting works. App Help answers from a guide that ships inside the app, keeps help out of your saved chats, and points to the right settings. MADE FOR APPLE DEVICES • Native layouts adapt from focused navigation on iPhone to category sidebars on larger screens • Settings are grouped by purpose, including Voice Typing, Agent Workflows, Models & Storage, Privacy & Data, Memory, and—on Mac—Instant Messaging • Widgets for Listen, Voice Note, Text Note, and Quick Actions • Siri, Apple Shortcuts, App Intents, the Mac menu bar, and keyboard shortcuts you can customize • Apple hardware acceleration for supported local models • Browse chat, transcription, speech, and embedding models in one Model Library • Store models internally, on an external drive, or on a shared volume, with separate tools for cleanup and recovery • Interface in English, Dutch, French, German, Italian, Japanese, Spanish, Portuguese, and Traditional Chinese EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Liquid Apollo4 screens
On‑Device AI4 screens

Verdict

The call

The clearest difference is in-app purchases: Liquid Apollo at none against On‑Device AI's 4. Liquid Apollo also leads on ratings volume (639 vs 162). On price, rating, review sentiment and update cadence 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. On‑Device AI sells 4 in-app purchases, starting at $3.99 per month. Liquid Apollo asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for Liquid Apollo against 4.4 for On‑Device AI. Both are backed by a comparable volume of ratings — 639 and 162 respectively. Written reviews are what separate them: 68% of Liquid Apollo's written reviews are positive against 64% of On‑Device AI's.

UpkeepUpdate frequency

Liquid Apollo ships an update every 11 days, On‑Device AI every 2 weeks. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.

Scorecard3 real differences · 7 level
Liquid Apollo versus On‑Device AI: the parameters behind the verdict, then further details
ParameterLiquid ApolloOn‑Device AI
PriceFreeFree
Rating4.5 (639 ratings) — better4.4 (162 ratings)
Positive reviews68.5% of reviews — better63.6% of reviews
Number of ratings639 — better162
Update frequencyEvery 11 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, MaciPhone, iPad, Mac, Vision Pro — better
Requires iOS18.018.0
Further details — not scored
Size151 MB1.8 GB
Age rating12+17+
DeveloperLiquid AI, Inc.Zijie Deng

Customer experience

Liquid Apollo

All ratings639 ratings
Positive87.6%
Neutral3.8%
Negative8.6%
Written reviews146 reviews
Positive68.5%
Neutral11.0%
Negative20.5%

On‑Device AI

All ratings162 ratings
Positive82.1%
Neutral8.0%
Negative9.9%
Written reviews107 reviews
Positive63.6%
Neutral15.9%
Negative20.6%

User reviews

Liquid Apollo

From 639 App Store ratings

What we love

  • 🚀 Great app
  • 🚀 Works well with OpenRouter
  • 🚀 Excellent for running local models
  • 🚀 Convenient one-time purchase
  • 🚀 Clean and intuitive UI

Room to improve

  • 🐛 Crashes frequently
  • 🐛 Glitches when editing messages
  • 🐛 Inconsistent message formatting
  • 🐛 Slow performance with larger conversations
  • 🔒 Unable to disable app transport security

On‑Device AI

From 162 App Store ratings

What we love

  • 🚀 Game-changing AI assistant
  • 🔍 Powerful search functionality
  • 👍 Customizable and versatile
  • 🌐 Seamless multi-device experience
  • 💡 Innovative character-based interactions

Room to improve

  • 🐛 Crashes on larger models
  • 🔋 Heating issues on some devices
  • 🔍 Slow and unreliable web search
  • 💻 Buggy on macOS

Bugs and requests

Liquid Apollo

Reported bugs

6 issues
  • Unable to download Liquid Models
  • Deleted locally installed models
  • OpenRouter support crashes the app
  • Voice list doesn't load all available voices
  • Backspace lag leading to unintended text deletion
Show 1 more
  • Inconsistent behavior when using code blocks

Requested features

10 requests
  • Add support for more open-source models (e.g. Gemma 3)
  • Implement image generation and upload functionality
  • Allow scheduling of asynchronous tasks
  • Integrate with Hugging Face model repository
  • Provide built-in prompt library
Show 5 more
  • Add MCP (Multimodal Conversation Protocol) support
  • Enable direct OpenAI API integration
  • Improve voice chat functionality
  • Add option to delete all chat history
  • Implement search and filtering for chat history

On‑Device AI

Reported bugs

3 issues
  • Crashes on startup
  • Model selection issues
  • Inability to copy generated text

Requested features

9 requests
  • Automated multi-character conversations
  • Character set saving and syncing
  • Streamlined search integration
  • UI optimization for icons
  • Remote endpoint support for multi-agents
Show 4 more
  • HomeKit integration
  • Improved documentation
  • Enlarged agent input window
  • Per-agent model assignment

In-app purchases

None

Liquid Apollo

No in-app purchases

4 purchases

On‑Device AI

Subscriptions2
  • Pro Member Subscription$3.991 Month
  • Pro Member Subscription$34.991 Year
One-time2
  • Lifetime Pro Member$49.99
  • Lifetime Pro Member$99.99

Questions

Is Liquid Apollo free?
Liquid Apollo is free to download, with no in-app purchases.
Is On‑Device AI free?
On‑Device AI is free to download, with in-app purchases available.
Which has better reviews, Liquid Apollo or On‑Device AI?
Liquid Apollo is rated higher. Liquid Apollo averages 4.5 out of 5 from 639 ratings, while On‑Device AI averages 4.4 from 162 ratings.
Do Liquid Apollo or On‑Device AI have ads?
Neither Liquid Apollo nor On‑Device AI shows ads.
Which is updated more often, Liquid Apollo or On‑Device AI?
Liquid Apollo ships an update every 11 days, and On‑Device AI every 2 weeks. Most recently, Liquid Apollo was updated on September 24, 2026 and On‑Device AI on September 22, 2026.

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