Know Time vs Zettel
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Know Time
Read full descriptionHide full description
a simple and practical app designed to help you manage your daily routines and sleep habits. Easily calculate sleep duration, record your sleep times, and get personalized suggestions to improve your rest. With a clean interface and smooth experience, Know Time makes healthy living easier. Key Features: Calculate your sleep duration with just a few taps Record and review your sleep history Get smart suggestions for better sleep Light and dark themes for comfortable viewing Feedback and support built right in
Zettel
This app offers a minimalist note-taking experience, focusing on a single, full-screen note at a time. It features a unique swipe-to-clear gesture with haptic feedback and simple tag functionality for easy organization. Notes are saved as plain Markdown files for versatile use.
- Single full-screen note interface
- Swipe-to-clear gesture with haptic feedback
- Simple hashtag tagging system
- Plain Markdown file export
- Works with Files app
- Dark mode support
Read full descriptionHide full description
Zettel - Quick Notes for iOS. Write. Swipe to tear. Done. Zettel brings the satisfying feeling of ripping paper to your iPhone. What makes it different: - One note at a time: Full screen. No tabs, no folders, no mess. Just you and your thoughts. - Tear to clear: Swipe from the edge and drag across the screen. Your note tears away with haptic feedback that actually feels real. - Tags that work: Type #anything and it becomes a tag. Find notes instantly without setting up complicated systems. - Your files, anywhere: Notes are plain Markdown files. Edit them in other apps, sync however you want, or just keep them local. Perfect for: - Quick thoughts - Meeting notes - Daily journaling - Project ideas Simple by design: - iPhone only (as it should be) - Works with Files app - Dark mode included - No account required - Zero tracking Built by someone who got tired of overcomplicated note apps. Sometimes the best tools are the simplest ones.
Screenshots
Verdict
The clearest difference is update cadence: Zettel at monthly against Know Time's every 5 months. Know Time's advantage is price ($0.99 vs $2.99) and iOS requirement (13.0 vs 26.0). On ads, in-app purchases and device support 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
Know Time costs $0.99 and Zettel $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Know Time ships an update every 5 months, Zettel monthly. The most recent releases landed on September 14, 2026 and October 1, 2026 respectively.
| Parameter | Know Time | Zettel |
|---|---|---|
| Price | $0.99 — better | $2.99 |
| Rating | — | 4.8 (6 ratings) — better |
| Positive reviews | — | 88.9% of reviews |
| Number of ratings | — | 6 — better |
| Update frequency | Every 5 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, Mac |
| Requires iOS | 13.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 30 MB | 7 MB |
| Age rating | 9+ | 4+ |
| Developer | 剑波 王 | Alexander Moritz Weichart |
In-app purchases
Know Time
No in-app purchases
Zettel
No in-app purchases
