Comparison

Local Sidekick vs Private AI

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

Head to head
About

Local Sidekick

Process your PDFs entirely on your device using local AI. Summarize, study, and ask questions about documents with complete privacy and offline functionality. Ideal for students and professionals needing secure document analysis.

Highlights
  • On-device AI processing
  • Offline PDF chat
  • Document summarization
  • Generate quiz questions
  • Extract key points
  • Total privacy
Read full description

Important: Requires an iPhone 15 Pro or newer with Apple Intelligence enabled. Also works with iPads and Macs powered by M1 chips or later with Apple Intelligence. Unlock the power of the local AI already on your device to summarize, study, and chat with your PDFs — all processed entirely on your device. No cloud. No compromise. Just lightning-fast insights with total privacy. Built for Privacy Local Sidekick uses Apple’s on-device intelligence to analyze your documents. That means your data never leaves your iPhone. Whether you're reviewing sensitive contracts or studying for exams, your files stay yours—always. Want proof? Turn on Airplane Mode and keep chatting with your PDFs. Everything works offline—because everything runs locally. What You Can Do - Study smarter: Ask questions about your PDF textbook and get instant summaries, definitions, and explanations. Local Sidekick can also generate multiple choice questions based on the PDF's content to help test your understanding. - Decode the fine print: Chat with lengthy terms & conditions or privacy policies — get the gist without the jargon. - Prep for meetings: Extract key points from business reports, whitepapers, or technical manuals in seconds. - Explore research: Navigate academic papers, highlight citations, and clarify complex concepts. - Organize your thoughts: Ask questions, get key points, and build your understanding step by step. Instant, Secure, and Local No uploads. No subscriptions. No waiting. Local Sidekick runs entirely on your iPhone (15 Pro or newer), iPad (M1 or newer), or Mac (M1 or newer), harnessing the power of the local AI foundation models already on your device to deliver real-time answers with zero data exposure. Important: Local Sidekick uses AI to interpret and summarize content, but it may occasionally produce inaccurate or incomplete information. This app is not a substitute for professional advice — especially in legal, medical, financial, or academic contexts. Always consult a qualified expert when making important decisions. - Do not rely on AI for legal interpretation or contract enforcement. - Do not use AI-generated summaries as your sole source for academic work or citations. - Do not use this app to analyze medical documents or make health-related decisions. - Use responsibly. Stay informed. And always double-check critical information.

About

Private AI

Features
Read full description

Transform how you work with information using Private AI: Document Chat, the AI assistant that keeps 100% of your data private on your device. No internet required. No data uploaded. Ever. 100% PRIVATE & OFFLINE Your conversations, documents, and data stay on YOUR device. Forever. Unlike ChatGPT, Gemini, Claude, or other cloud AI services, Private AI uses Apple's built-in Intelligence models for completely offline, lightning fast responses. Zero tracking. Zero uploads. Zero compromises. Perfect for confidential, sensitive, or personal use. NO HIDDEN COSTS No subscriptions. No in-app purchases. No "premium" features locked behind paywalls. Buy once, use forever. POWERED BY APPLE INTELLIGENCE Built exclusively for iPhone 15 Pro+, iPad M1+, and Mac with Apple Silicon. No large, external vendor model downloads eating your storage - Private AI leverages the powerful AI models already in your device from Apple. Fast, efficient, and always ready. CHAT WITH YOUR DOCUMENTS Upload PDFs, code files, spreadsheets, notes, research papers, meeting transcripts, word documents, and more. With any text-based file, you can ask questions, get summaries, extract insights, analyze data, and more using advanced RAG (Retrieval Augmented Generation) technology. Your personal document library becomes instantly searchable and queryable. 25 SPECIALIZED AI EXPERTS READY TO USE No prompt engineering needed. Just pick your expert: • Study & Learn: Teacher, Summarizer, Simplifier • Coding: Code Expert, Debugger, Technical Writer • Writing: Creative Writer, ReWriter, Spell Checker, Poet, Story Teller • Business: Analyst, Marketer, Meeting Notes, Recruiter, Planner • Creative: Brainstormer, Social Media, Guide Creator, Motivator • Utility: Translator, Pros & Cons, Follow Ups, Concise Mode Plus, create unlimited custom prompts for your specific needs! VS CHATGPT, CLAUDE, GEMINI, & OTHERS They require internet & upload your data → Private AI is 100% offline They charge monthly subscriptions forever → Private AI is yours (one-time purchase) They track your usage & conversations → Private AI has zero analytics, zero tracking They can't guarantee where your data goes → Private AI your data never leaves your device WHO IS THIS FOR? • Students - Study aids, research analysis, essay help, exam prep • Professionals - Confidential docs, reports, presentations, meeting notes • Developers - Code review, debugging, documentation, architecture planning • Writers - Brainstorming, editing, storytelling, content creation • Researchers - Paper analysis, data insights, literature review Anyone who values privacy and wants to leverage AI with sensitive information that absolutely does not belong in the cloud. POWERFUL FEATURES • Multiple isolated conversations - keep contexts separate • Document library - reuse files across chats • Beautiful themes - customize every color • Smart search - find conversations and documents instantly • Markdown support - beautifully formatted responses • No ads, ever - you own the app, not the other way around HOW DOES IT WORK? Private AI uses Apple's Foundation Models that are already on compatible devices. When you upload a document, it's split into intelligent chunks and converted to vector embeddings (mathematical representations of meaning) stored in a local database. When you ask questions, our RAG system finds the most relevant chunks and provides them as context to the AI model alongside your query. The model generates responses using both the retrieved information and its built-in knowledge - all processed locally on your device's Neural Engine. No internet. No APIs. No cloud processing. Just pure, private, on-device AI. Your knowledge. Your privacy. Your control. Download Private AI: Document Chat and experience truly private AI assistance today. REQUIREMENTS: • iOS26 • iPhone 15 Pro or iPhone 16+ models • iPad mini (A17 Pro) or iPad with M1+ • Mac with Apple Silicon (M1+)

Screenshots

Local Sidekick3 screens
Private AI4 screens

Verdict

The call

The clearest difference is price: Local Sidekick at Free against Private AI's $4.99. Private AI's advantage is in-app purchases (none vs 3) and update cadence (every 2 days vs every 10 days). 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

Local Sidekick is free to download; Private AI costs $4.99 up front. Local Sidekick sells 3 one-off in-app purchases. Private AI asks for nothing beyond the download.

UpkeepUpdate frequency

Local Sidekick ships an update every 10 days, Private AI every 2 days. The most recent releases landed on June 3, 2026 and July 30, 2026 respectively.

Scorecard4 real differences · 6 level
Local Sidekick versus Private AI: the parameters behind the verdict, then further details
ParameterLocal SidekickPrivate AI
PriceFree — better$4.99
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 10 daysEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
Best chart rank—#195 — better
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS26.026.0
Further details — not scored
Size3 MB6 MB
Age rating4+12+
DeveloperFLUXLINK LLCGTechnologies LLC

In-app purchases

3 purchases

Local Sidekick

One-time3
  • Donate a Small Coffee$0.99
  • Donate a Medium Coffee$1.99
  • Donate a Large Coffee$2.99
None

Private AI

No in-app purchases

Questions

Is Local Sidekick free?
Local Sidekick is free to download, with in-app purchases available.
Is Private AI free?
Private AI costs $4.99, with no in-app purchases.
Do Local Sidekick or Private AI have ads?
Neither Local Sidekick nor Private AI shows ads.
Which is updated more often, Local Sidekick or Private AI?
Local Sidekick ships an update every 10 days, and Private AI every 2 days. Most recently, Local Sidekick was updated on June 3, 2026 and Private AI on July 30, 2026.

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