Open Citadel vs DocNavy
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Open Citadel
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A book only changes you when you act on it. Most reading apps end when you close the book. Open Citadel starts there. It is your citadel of knowledge and self-development: one Library for the books, podcasts and blogs you learn from, and a way to act on what you learn. One Library for everything you learn from Books, podcasts and blogs sit side by side. Move between them in one tap. Free books from Project Gutenberg Browse Gutenberg's shelves, search its catalogue, and download books in the public domain in the United States. Readers outside the US should check the law where they live before they read. Podcasts you can finish Follow shows, search podcast charts and directories, and download episodes. The player has speed control, a sleep timer, chapters and show notes with seekable timestamps. Import your AntennaPod library and keep your place in every episode. Blogs, read in the reader Follow a blog by its feed or web address, or choose from a curated directory. Each post opens in the reader, so you can highlight it, tag it and talk it through with Samwell, just as you would a book. Highlight it. Keep it. Use it. Every highlight, note and tag is saved to your Timeline, a dated record of what you have learned. Samwell, your reading companion Samwell helps you set up your Library, talks through what you read, and turns what you want to change into a goal made of small steps. He checks in using your logs and highlights, so his advice is about your life, not someone else's. On-device Samwell runs on your phone, so he works without a connection. Compass counts consistency, not streaks Log a few minutes a day. Compass measures how often you show up, so one missed day never wipes out the rest. The whole cycle, in one app Read. Highlight. Set a goal. Log it. When the goal ends, Samwell writes down what it taught you, so the next one starts smarter. We assume you can decide what matters. Open Citadel helps you act on it. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.open-citadel.online/privacy
DocNavy
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Turn PDF, Word, Excel, PowerPoint and 10 more formats into clean Markdown โ entirely on your iPhone, iPad or Mac. Your documents never leave the device. No server, no account, no upload. WHAT IT CONVERTS โข PDF, DOC, DOCX, RTF, ODT, EPUB โข XLS, XLSX, XLSB, ODS, CSV โข PPT, PPTX, ODP WHAT SURVIVES THE CONVERSION Tables, merged cells, footnotes, headings, bold and italic, nested lists, math formulas as LaTeX, embedded images written out next to the Markdown, and โ when you convert a whole folder โ the folder structure itself. SCANNED PAGES, HANDLED PROPERLY Pages with no text layer go through on-device OCR. The language is detected automatically, so a Japanese invoice and an English contract in the same batch both come out right. Nothing is sent anywhere to make that happen. HONEST ABOUT QUALITY Every conversion comes with a per-page report: how many pages were read directly, how many needed OCR, how many failed, and why. Most converters hand you a file and hope you do not check. DocNavy tells you what it actually managed to read. BUILT FOR MARKDOWN PEOPLE Made for Obsidian, Logseq, Bear and plain-text vaults. Preview the result, read the raw Markdown side by side, then save the .md file wherever you keep your notes. PRIVACY YOU CAN VERIFY DocNavy makes no network requests at all. You do not have to take our word for it: turn on Settings โบ Privacy & Security โบ App Privacy Report, use the app for a few days, and the domain list for DocNavy will stay empty. The App Store privacy label says Data Not Collected because that is literally what happens. FREE AND PRO The free tier is the whole app: all 14 formats, on-device OCR, whole-folder conversion, zip export and the full diagnostics report โ every page of every file, however long. One limit applies: 5 documents a day. Pro removes it and changes nothing else: no extra features, no watermark, no upsell. Take it monthly at $2.99 with a 3-day free trial, or pay $29.99 once and keep it. Either way it is a Universal Purchase, so buying on iPhone unlocks iPad and Mac too. Privacy Policy: https://docnavy.com/privacy Terms of Use (EULA): https://docnavy.com/terms
Screenshots
Verdict
The clearest difference is in-app purchases: Open Citadel at none against DocNavy's 2. On price, update cadence, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. DocNavy sells 2 in-app purchases, starting at $2.99 per month. Open Citadel asks for nothing beyond the download.
Open Citadel ships an update fortnightly, DocNavy weekly. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.
| Parameter | Open Citadel | DocNavy |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Weekly โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad | iPhone, iPad, Mac โ better |
| Requires iOS | 17.0 | 17.0 |
| Further details โ not scored | ||
| Size | 95 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Thamsanqa Ncube | Thi Thanh Van Do |
In-app purchases
Open Citadel
No in-app purchases
DocNavy
- DocNavy Pro - Monthly3 Days trial$2.991 Month
- DocNavy Pro - Lifetime$29.99









