Comparison

On‑Device AI vs SynthAI Draw

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

Head to head
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/

About

SynthAI Draw

Features
Read full description

Combine AI chat and image creativity in one, meeting diverse needs:​ AI Chat: Local offline chat (data stored only on the device, more privacy-safe; you can chat anytime during commutes or in weak-network environments, convenient for solving questions and daily conversations) + online in-depth chat (supports popular science on professional knowledge, work idea organization, story/copy creation; adjusts communication style according to needs, responding accurately to diverse requirements); Image Features: One-tap beautification (basic adjustments + portrait optimization + filters), Image-to-Text (auto-recognize and generate descriptions/copy), Image-to-Image (create new images by instructions), Style Modification (dozens of templates + custom parameters, quick visual switching);​ Convenient Experience: The interface has clear classifications and intuitive function locations, helping you find needed tools in seconds; creative content supports local saving for viewing and editing at any time; AI models and style templates are updated regularly to continuously optimize the user experience. Whether it's daily chat interactions or image creative production, it provides efficient support and becomes a practical and considerate intelligent companion on your phone. Terms of Service: https://aisyth.com/pages/privacy/user-terms.html Privacy Policy: https://aisyth.com/pages/privacy/privacy-policy.html

Screenshots

On‑Device AI4 screens
SynthAI Draw4 screens

Verdict

The call

The clearest difference is device support: On‑Device AI at 4 against SynthAI Draw's 1. On price, update cadence, ads and in-app purchases 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 and SynthAI Draw sells 2 in-app purchases, starting at $17.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

On‑Device AI ships an update fortnightly, SynthAI Draw every 4 weeks. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

Scorecard1 real difference · 9 level
On‑Device AI versus SynthAI Draw: the parameters behind the verdict, then further details
ParameterOn‑Device AISynthAI Draw
PriceFreeFree
Rating4.4 (163 ratings) — better—
Positive reviews63.6% of reviews—
Number of ratings163 — better—
Update frequencyFortnightly — betterEvery 4 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Mac, Vision Pro — betteriPhone
Requires iOS18.018.0
Further details — not scored
Size1.8 GB65 MB
Age rating17+4+
DeveloperZijie DengShanghai Xinglv Yundong Intelligent Technology Co., Ltd.

Bugs and requests

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

SynthAI Draw

Not enough reviews yet to summarise bugs or requests.

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
2 purchases

SynthAI Draw

Subscriptions2
  • Monthly$17.991 Month
  • Yearly$29.991 Year

Questions

Is On‑Device AI free?
On‑Device AI is free to download, with in-app purchases available.
Is SynthAI Draw free?
SynthAI Draw is free to download, with in-app purchases available.
Do On‑Device AI or SynthAI Draw have ads?
Neither On‑Device AI nor SynthAI Draw shows ads.
Which is updated more often, On‑Device AI or SynthAI Draw?
On‑Device AI ships an update fortnightly, and SynthAI Draw every 4 weeks. Most recently, On‑Device AI was updated on October 27, 2026 and SynthAI Draw on October 31, 2026.

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