Comparison

Privacy AI vs EchoCaption

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

Head to head
About

Privacy AI

This AI toolkit offers a comprehensive suite of tools for local and cloud-based models, including language, speech, and image processing. It enables users to chat, run agents, transcribe meetings, and generate images with over 60 integrated functions. Local model features operate entirely offline, enhancing privacy and accessibility.

Highlights
  • Local and cloud AI model integration
  • AI agent with goal-driven planning
  • Speech recognition and text-to-speech
  • On-device image generation
  • Meeting transcription and summarization
  • AI-powered writing and editing tools
  • Document scanning and conversion
Features
Read full description

Privacy AI is an all-in-one AI toolkit for every kind of model: local language models (GGUF, MLX, Core AI), speech recognition, text-to-speech and image models, Apple's own models, and the major cloud providers. Chat, run agents, transcribe meetings and create images with 60+ tools. Local models work fully offline, and most file types convert to Markdown that AI can read. Made for iPhone Duo - Unfold it and lists sit beside their details - Meetings: the live transcript on the top half, your notes on the bottom half - Half-folded, the split lands on the fold and the controls stay clear of the keyboard - Doc Scanner shows recognized text beside the original page - Reader keeps an article beside your chat about it; AI edits sit next to your text - Half-folded, Home, Help and settings keep content off the crease - Two Privacy AI windows in Split View, like a meeting beside a chat, also on iPad Meetings - Record meetings and lectures for an on-device transcript with speaker labels - Get minutes, lecture notes or your own summaries, linked to the moments they quote - Lock Screen controls; export SRT, VTT or Markdown Games - Adventure: a fantasy campaign with an AI party and narrator - Werewolf: a social deduction table of AI players Create Images on Your Device - FLUX.2 Klein and Stable Diffusion models, free with no API key - Import your own fine-tunes, plus SDXL and LoRAs on Mac Run Models Locally or in the Cloud - On-device GGUF and MLX models, with vision and tool-calling - Apple's on-device and Private Cloud Compute models, with no account or API key - Connect to OpenAI, Claude, Gemini, DeepSeek, or any OpenAI-compatible server Agent - Give it a goal: it plans, calls tools and delivers a written report - Teach it with Skills: folders of instructions and scripts Chat - Smart Chat routes each message by complexity and keeps sensitive text local System Keyboard - Dictate, rewrite, translate and proofread text in any app - Types in 11 languages with Pinyin, Japanese and Korean input Mini Apps - Doc Scanner: PDFs, photos and scans to clean Markdown, tables intact - Email Assistant: triage any IMAP inbox on device - Knowledge Wiki: cited answers from your own documents - LLM Council: ask several models at once and get one answer - Topic Briefing: dated, sourced briefs on topics you follow Tools and Connectors - 60+ built-in tools: web, news and paper search, calendar, code and more - Google Drive, MCP with a marketplace, Siri and Shortcuts Writing and Voice - Novel Writer drafts outlines and chapters - Text to Audio: documents read aloud by on-device voices - Voice Clone: a voice from a short recording or a description Files and Accessibility - Convert PDFs, Office files, e-books, archives, emails and media to Markdown, with OCR - VoiceOver throughout, including both games - View Assistant: point the camera and hear what is in front of you Free to Use. No Ads. Local model features are free, including the AI keyboard, 60+ tools, games and on-device image generation. Cloud API models, Google Drive and the MCP marketplace need a subscription. Privacy by Design Privacy AI runs on-device. No backend servers. No accounts. No data collection. Every API request is visible in the Protocol Inspector. Your models. Your device. Your data. Terms of Use: https://privacyai.acmeup.com/docs/policy/tos.html Privacy Policy: https://privacyai.acmeup.com/docs/policy/privacy.html

About

EchoCaption

Features
Read full description

EchoCaption helps you generate accurate captions from audio and video—then play them back with perfectly synced subtitles. Whether you're studying, creating content, or saving meeting notes, EchoCaption keeps everything private with on-device transcription and fast subtitle tools. Key Features On-device Speech-to-Text: Fast transcription powered by a Whisper-based model Video Playback + Captions: Watch videos with synced subtitles Export Subtitles: Save results as SRT / VTT or plain text Share Extension Import: Send files from Photos, Files, or other apps straight into EchoCaption Clean & Simple UI: Focus on your content, not complicated settings Perfect for Captioning videos for social media Language learners practicing listening Students transcribing lectures Creators turning clips into subtitle-ready files Privacy EchoCaption runs transcription on device. Your media stays on your iPhone/iPad.

Screenshots

Privacy AI4 screens
EchoCaption3 screens

Verdict

The call

The clearest difference is price: Privacy AI at Free against EchoCaption's $1.99. EchoCaption's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement 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

Privacy AI is free to download; EchoCaption costs $1.99 up front. Privacy AI sells 3 in-app purchases, starting at $3.99 per 7 days. EchoCaption asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Privacy AI versus EchoCaption: the parameters behind the verdict, then further details
ParameterPrivacy AIEchoCaption
PriceFree — better$1.99
Rating4.8 (20 ratings) — better—
Positive reviews92.3% of reviews—
Number of ratings20 — better—
Update frequencyWeekly—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.0 — better18.6
Further details — not scored
Size3.4 GB796 MB
Age rating17+4+
DeveloperAcmeUp Inc.Kai Chen

In-app purchases

3 purchases

Privacy AI

Subscriptions3
  • Weekly Pro Plan$3.997 Days
  • Monthly Pro Plan$9.991 Month
  • Yearly Pro Plan$99.991 Year
None

EchoCaption

No in-app purchases

Questions

Is Privacy AI free?
Privacy AI is free to download, with in-app purchases available.
Is EchoCaption free?
EchoCaption costs $1.99, with no in-app purchases.
Do Privacy AI or EchoCaption have ads?
Neither Privacy AI nor EchoCaption shows ads.

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