Kinetic Reader vs Kujun
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kinetic Reader
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Kinetic Reader is a high-performance, private-first document reader designed for professionals who need to process sensitive information fast. Unlike other readers, Kinetic operates 100% offline—your documents never leave your device. Real-Time Flow Control On-the-Fly Adjustments: Change speed, font size, and word chunking (1–5 words) instantly without pausing your read. Retention Pauses: Built-in "metacognitive anchors" allow you to process and blink at set intervals, ensuring speed doesn't sacrifice memory. Universal Import: Throw any PDF, .docx, HTML, or text file at it. Kinetic handles the heavy lifting locally. Professional Navigation Deep Indexing: Automatic chapter detection for instant navigation in long-form books and technical manuals. Precision Scrubbing: Smooth, video-style scrubbing through text to find exactly what you need. Local Library: A persistent backend database keeps your reading history and bookmarks secure on your device. Zero Data Cost: No accounts, no subscriptions, and zero telemetry. Kinetic Reader is a "sealed" environment for your most sensitive documents—ideal for legal, medical, and corporate research.
Kujun
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See your consistency at a glance — and keep it completely to yourself. Kujun is a private, fully native habit tracker. No account. No subscription. No cloud. Everything lives on your device, and the app collects zero data. Named after the Korean word 꾸준 (kkujun) — "steady, consistent" — Kujun is built around one idea: show up daily, and watch that consistency build. PRIVATE BY DESIGN • No account or sign-up — open the app and start • No subscription required • All your data stays in a local database on your device • No analytics, no tracking, no third-party SDKs YOUR CONSISTENCY AT A GLANCE • A GitHub-style heat map for every habit • Current streak, best streak, and completion rate • The longer you show up, the better it looks CHECK OFF WITHOUT OPENING THE APP • Home Screen widgets (small and medium) show your last 7–14 days and streaks • Complete habits straight from reminder notifications • Tap the widget to jump right into the app MADE FOR DAILY USE • Create habits with a name, icon, color, and weekly schedule — daily or any set of weekdays • Sort, reorder, and edit habits any time • Gentle reminders at the time you choose • Haptics and a small celebration when your day is complete FAST AND NATIVE • Built with native iOS components, SF Symbols, and modern iOS design • Light and dark mode, at home on your iPhone YOUR DATA IS YOURS • Export a backup file any time and restore it on any device • Delete the app and nothing lingers on a server — because there is no server Start small. Stay steady. Watch the heat build.
Screenshots
Verdict
The clearest difference is price: Kujun at Free against Kinetic Reader's $4.99. Kinetic Reader's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.4). On 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
Kujun is free to download; Kinetic Reader costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Kinetic Reader | Kujun |
|---|---|---|
| Price | $4.99 | Free — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 22 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | Ryan Bair | Code with Beto |
In-app purchases
Kinetic Reader
No in-app purchases
Kujun
No in-app purchases






