DocPeek vs Private.ai
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DocPeek
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DocPeek is a local-first document reader and long-form writing workspace for iPhone and iPad. Open Markdown, HTML, Word, Excel, PowerPoint, RTF and EPUB files, search and understand their content, then export polished PDFs. Switch to Creation mode to organize chapters, outlines, characters, worldbuilding and storyboard beats. DOCUMENT READER • Open MD, HTML, DOC, DOCX, XLS, XLSX, PPT, PPTX, RTF and EPUB • Import from Files, Mail, Messages and the share sheet • Table of contents, full-text search, source view, themes and font controls • Syntax highlighting, math formulas and Mermaid diagrams AI READING ASSISTANT • Generate summaries, outlines, key points and action items • Ask questions about the active document • Text is sent only when you explicitly use an AI feature PDF EXPORT • Convert one file or batch multiple documents • Customize cover, contents, paper, margins, headers and footers WRITING WORKSPACE • Manuscript, outline, scene beats, characters and worldbuilding • Templates for novels, serialized fiction and screenplay storyboards • Polish, expand, shorten, continue and rewrite with AI • Import DOCX, TXT, MD, RTF and EPUB with chapter detection • Export DOCX, EPUB, PDF, TXT, MD and JSON • Read chapters aloud for proofreading Document rendering, project storage and standard exports stay on your device by default. Private Sync can transfer writing projects between your devices, and cloud data can be deleted at any time. The free tier includes core reading, previews and standard PDF export. DocPeek Pro unlocks higher AI usage, AI writing assistance and batch PDF workflows. Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://docpeek.xinghebit.com/privacy.html
Private.ai
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Private.ai is a private AI chat you can trust — capable AI without handing over your life to get it. Most AI apps keep your conversations, learn who you are, and turn what you type into a product. private.ai is built the other way around: the systems that would collect your data simply aren’t there. Your chats aren’t stored. Nothing is logged, profiled, or sold. There’s no history for anyone — including us — to go looking through. A subscription is required to use private.ai. Plans are $16/month or $143.99/year. What you get: • Nothing kept. Your conversations stay encrypted on your device, and we don’t keep a copy. • No name needed. Your account and payment don’t have to be tied to your identity. • Harder to track. Your questions are remixed and run more than once, so your activity can’t be fingerprinted. • Solid ground. Runs on US-based, encrypted hardware that’s rotated regularly. • Nothing to leak. With nothing retained, there’s nothing to sell, subpoena, or breach. Whether you’re handling sensitive work, protecting a client’s trust, or simply tired of being the product, Private.ai gives you the AI you need with your privacy kept intact. Privacy you don’t have to take on faith — it’s built into how the app works. Terms of Use: https://private.ai/terms Privacy Policy: https://private.ai/privacy
Screenshots
Verdict
The clearest difference is update cadence: DocPeek at every 3 days against Private.ai's every 5 days. DocPeek also leads on device support (4 vs 2) and iOS requirement (15.0 vs 17.0). On price, 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
Both are free to download. DocPeek sells 2 in-app purchases, starting at $1.99 per month and Private.ai sells 2 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.
DocPeek ships an update every 3 days, Private.ai every 5 days. The most recent releases landed on October 10, 2026 and October 4, 2026 respectively.
| Parameter | DocPeek | Private.ai |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days — better | Every 5 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 15 MB | 35 MB |
| Age rating | 4+ | 17+ |
| Developer | Beijing XingheBit Science & Technology Development Co., Ltd. | Strongwall.ai |
In-app purchases
DocPeek
- DocPeek Pro 月订阅$1.991 Month
- DocPeek Pro 年订阅$12.991 Year
Private.ai
- Private.ai Monthly1 Month trial$12.991 Month
- Private.ai Yearly1 Month trial$129.991 Year









