Comparison

notaduo vs ThreeNote

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

Head to head
About

notaduo

Features
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Notaduo is an app where you can create and work on a note on different devices.Ā  These notes can be retrieved using unique Note IDs.Ā  You can retrieve your notes using the Notaduo app on different devices. In order to use Notaduo you do not need to login or register, simply share and retrieve a note on a different device. Notaduo comes in handy when working with to-do lists for group projects or when having a shared grocery list for example.

About

ThreeNote

Features
Read full description

Your Personal Knowledge Forest Tired of scattered notes and disorganized thoughts? TreeNote is here to help you cultivate a thriving ecosystem of ideas. With its intuitive tree-like structure, TreeNote allows you to: Create Hierarchies: Organize your notes in a logical, branching structure. Link Related Concepts: Connect ideas across different branches with ease. Quick Navigation: Zoom in and out of your knowledge tree effortlessly. Mobile-Friendly: Access your ideas anytime, anywhere on your iOS device. Secure: Keep your thoughts safe with local storage. Easy Sharing: Export your data for backup or sharing. Key Features: • Unlimited nested levels for complex hierarchies • Rich text editing for detailed notes • Quick add for rapid idea capture • Search functionality to find information fast • Customizable themes to suit your style Data Export and Backup: • Export your entire database as a SQLite file for comprehensive backups • Generate a human-readable text file of your notes' structure and content • Email both SQLite and text files directly from the app for easy sharing and safekeeping Whether you're a student organizing study materials, a professional managing projects, or a creative mind mapping out stories, TreeNote adapts to your needs. Start planting your ideas today and watch your knowledge grow!

Screenshots

notaduo4 screens
ThreeNote1 screens

Verdict

The call

The clearest difference is update cadence: ThreeNote at daily against notaduo's fortnightly. notaduo's advantage is iOS requirement (12.4 vs 16.6). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

notaduo ships an update fortnightly, ThreeNote daily. The most recent releases landed on September 20, 2026 and September 14, 2026 respectively.

Scorecard2 real differences Ā· 4 level
notaduo versus ThreeNote: the parameters behind the verdict, then further details
ParameternotaduoThreeNote
PriceFreeFree
Update frequencyFortnightlyDaily — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.4 — better16.6
Further details — not scored
Size5 MB1 MB
Age rating4+4+
DeveloperJonathan FritzJouni Erola

In-app purchases

None

notaduo

No in-app purchases

None

ThreeNote

No in-app purchases

Questions

Is notaduo free?
notaduo is free to download, with no in-app purchases.
Is ThreeNote free?
ThreeNote is free to download, with no in-app purchases.
Do notaduo or ThreeNote have ads?
Neither notaduo nor ThreeNote shows ads.
Which is updated more often, notaduo or ThreeNote?
notaduo ships an update fortnightly, and ThreeNote daily. Most recently, notaduo was updated on September 20, 2026 and ThreeNote on September 14, 2026.

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