Comparison

CoralUp vs Zettel

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

Head to head
About

CoralUp

Features
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Take Control of Your Day and Make a Difference for Our Oceans! CoralUp combines the proven power of timeboxing with a fun, eco-friendly twist. Plan your tasks, manage your time, and earn virtual coins that help you adopt real coral and restore marine habitats around the globe! Stay Organized with Timeboxing - Add Tasks Easily: Write down everything you need to do—big or small—and keep your to-dos in one convenient place. - Rank Your Priorities: Assign a rank to each task (1 = highest priority) so you always know what to tackle first. - Schedule with Precision: Plan specific time blocks for every task. Stay focused and watch your productivity soar! Get Motivated with Gamification - Earn Coins for Completing Tasks: Stick to your schedule and build good habits to collect in-app coins. - Build Your Virtual Reef: Use coins to restore and customize your own virtual seafloor—watch it come to life with coral, fish, and more! - Real-World Impact: Redeem coins to adopt a real coral. By doing so, you help fund coral conservation and protect our underwater ecosystems. Why CoralUp? - Boost Productivity: Timeboxing forces you to concentrate on one task at a time, reducing procrastination and increasing efficiency. - Positive Reinforcement: Receiving coins for completed tasks keeps you motivated and makes tackling your to-do list feel like a fun challenge. - Eco-Friendly Mission: Feel great knowing your daily efforts contribute to the preservation of precious marine life and coral reefs. Join the CoralUp Community - Track Your Progress: Watch your daily, weekly, and monthly stats improve as you conquer tasks faster and more effectively. - Compete with Friends: Challenge friends to complete tasks, rack up coins, and see who can grow the most impressive virtual reef! - Share Your Impact: Show off your real coral adoption certificates to encourage others to join the cause. Download CoralUp Today and transform your daily routine into a win-win for both you and our planet!

About

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.

Highlights
  • 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 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

CoralUp4 screens
Zettel4 screens

Verdict

The call

The clearest difference is price: CoralUp at Free against Zettel's $2.99. CoralUp also leads on update cadence (every 5 days vs monthly) and iOS requirement (13.0 vs 26.0). Zettel's advantage is ads (none vs shown). On 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

CostPrice · In-app purchases · Ads · Monetization

CoralUp is free to download; Zettel costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

CoralUp ships an update every 5 days, Zettel monthly. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

Scorecard4 real differences · 6 level
CoralUp versus Zettel: the parameters behind the verdict, then further details
ParameterCoralUpZettel
PriceFree — better$2.99
Rating—4.8 (6 ratings) — better
Positive reviews—88.9% of reviews
Number of ratings—6 — better
Update frequencyEvery 5 days — betterMonthly
AdsYesNo — better
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, Mac
Requires iOS13.0 — better26.0
Further details — not scored
Size62 MB7 MB
Age rating4+4+
DeveloperSimon HertweckAlexander Moritz Weichart

In-app purchases

None

CoralUp

No in-app purchases

None

Zettel

No in-app purchases

Questions

Is CoralUp free?
CoralUp is free to download, with no in-app purchases.
Is Zettel free?
Zettel costs $2.99, with no in-app purchases.
Do CoralUp or Zettel have ads?
CoralUp shows ads; Zettel does not.
Which is updated more often, CoralUp or Zettel?
CoralUp ships an update every 5 days, and Zettel monthly. Most recently, CoralUp was updated on October 30, 2026 and Zettel on November 5, 2026.

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