Comparison

GrapNote vs OTN

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

Head to head
About

GrapNote

Features
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GrapNote is a streamlined list-management app that helps you organize your thoughts and ideas effortlessly. Key Features: • Clean, intuitive interface • Eye-friendly color scheme that's gentle even at first wake-up • Full voice input support • Organize ideas across five categories: Vision, Style, Mission, Plan, and Action • Two-level inbox for unsorted items • Quick list additions from text input • Privacy-focused: all data stays on your device Perfect For: • Capturing every idea and inspiration • Managing your goals and action plans • Instantly noting daily tasks and sudden thoughts • Anchoring your project mindset and vision development Special Features: • Folder classification for structured thinking • Keyboard-optimized interface for efficiency • Lightweight performance for quick launch-to-note workflow All your data remains exclusively on your device and is never transmitted externally. Start organizing your thoughts and bringing your ideas to life with GrapNote.

About

OTN

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OTN applies the mental model of a one-time password to your notes. Every note is born with a lifetime — 10 minutes, an hour, a day, a week — and quietly disappears when its time runs out. Most notes are one-time information: where you parked, a wifi password, today's to-do. They don't deserve permanent storage. OTN is built for exactly this — write it in five seconds, let it go, and never watch your list pile up again. WATCH IT FADE Notes visually age as their time runs out, dimming and blurring until they dissolve. The list itself is the timer. KEEP ONLY WHAT MATTERS Tap a note to Keep it forever, or Release it now. Keeping is a deliberate act, not the default. NOTHING IS LOST BY ACCIDENT Expired and released notes rest unseen in the Archive for a while — then they're gone for good. Restore anything before it vanishes. DESIGNED TO DISAPPEAR A dark, minimal, single-screen interface. No folders, no tabs, no clutter. Choose from three typefaces to make it yours. OTN PRO A single one-time purchase removes ads on iPhone and syncs your notes between iPhone and Mac via iCloud. Nothing piles up. As it should be.

Screenshots

GrapNote4 screens
OTN4 screens

Verdict

The call

The clearest difference is in-app purchases: GrapNote at none against OTN's 1. GrapNote also leads on ads (none vs shown) and update cadence (daily vs every 3 days). On price and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. OTN sells 1 one-off in-app purchase. GrapNote asks for nothing beyond the download.

UpkeepUpdate frequency

GrapNote ships an update daily, OTN every 3 days. The most recent releases landed on October 28, 2026 and November 5, 2026 respectively.

Scorecard4 real differences Ā· 2 level
GrapNote versus OTN: the parameters behind the verdict, then further details
ParameterGrapNoteOTN
PriceFreeFree
Update frequencyDaily — betterEvery 3 days
AdsNo — betterYes
In-app purchasesNo — betterYes
DevicesiPhone, iPodiPhone, iPad, Mac — better
Requires iOS15.0 — better17.0
Further details — not scored
Size1 MB6 MB
Age rating4+4+
DeveloperRYU HARAGUCHISeokHui Lee

In-app purchases

None

GrapNote

No in-app purchases

1 purchases

OTN

One-time1
  • OTN Pro$0.99

Questions

Is GrapNote free?
GrapNote is free to download, with no in-app purchases.
Is OTN free?
OTN is free to download, with in-app purchases available.
Do GrapNote or OTN have ads?
OTN shows ads; GrapNote does not.
Which is updated more often, GrapNote or OTN?
GrapNote ships an update daily, and OTN every 3 days. Most recently, GrapNote was updated on October 28, 2026 and OTN on November 5, 2026.

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