Comparison

KnowTree vs Thirds

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

Head to head
About

KnowTree

Features
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◆ Organize notes in a "hierarchy" — and everything becomes clearer With most note-taking apps, as information piles up, it becomes hard to see how things are connected. "KnowTree" organizes your notes hierarchically with parent-child relationships. Group related information together so you can always find it again. --- ◆ Key Features [Tree Structure] Create nodes with parent-child relationships. Organize like "Main Topic → Subtopic → Details." No limit on how deep you can go. [Flexible Workflow] Start from the big picture (top-down), or jot down small notes and group them later (bottom-up) — both approaches work great. [Rich Content] Supports Markdown, images, links, and code blocks. Create notes that are clear and easy to read. --- ◆ Great For • Systematically organizing what you've learned • Structuring reading notes to match a book's outline • Managing project information in a hierarchy • Organizing your thoughts before writing • Connecting scattered notes into a coherent structure --- ◆ Features [Basic] • Create, edit, and delete nodes • Organize nodes with parent-child relationships • Markdown support • Search across all nodes • Trash (recover accidentally deleted notes) [Data Management] • Create and restore backups • Import data [Premium] • Create multiple trees • Ad-free experience • Premium color themes • Add images within note content • Export nodes • Home screen widget *Available with a Premium subscription (monthly) --- ◆ About Premium Plan Unlock all features with a monthly subscription. • Remove ads for a distraction-free experience • Access more color themes • Manage multiple trees for different purposes • Add images directly to your notes • Export in Markdown format • Quick access from your home screen You can cancel your subscription at any time. --- EULA (Apple Standard License Agreement) This app is subject to the Apple Media Services Standard End User License Agreement (Standard EULA). Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Use Use of this app is subject to the following terms: KnowTree Terms of Use: https://uconpa.com/chishikinoki/terms/ Privacy Policy For information on how we handle user data: KnowTree Privacy Policy: https://uconpa.com/chishikinoki/privacypolicy/

About

Thirds

This app offers a minimalist approach to task management with three distinct lists: Present, Future, and Past. It allows users to input tasks via voice and provides a clear overview of daily progress and upcoming items without overwhelming features.

Highlights
  • Three-list organization (Past, Present, Future)
  • Voice-to-task input
  • Streak tracking
  • Minimalist interface
  • Focus on clarity over complexity
Features
Read full description

Thirds is the simplest to-do list you'll ever use. If every productivity app feels like too much, this is your reset. No projects. No tags. No deadlines screaming at you. Just three lists: Present — what you're doing today Future — what can wait Past — what you've finished Speak your day out loud — “Gym. Call mom. Groceries. Finish report.” Thirds turns your voice into clean, organized tasks in seconds. Swipe left to see your streak and everything you've completed. Swipe right to see what's ahead — calm, quiet, no pressure. Most task apps are built on anxiety. Thirds is built on clarity. Past. Present. Future. That's all there is. Start your free 3-day trial and see what happens when you stop managing tasks and start completing them. Pricing details available in the app. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

KnowTree4 screens
Thirds4 screens

Verdict

The call

The clearest difference is rating: Thirds at 5.0 against KnowTree's 4.0. Thirds also leads on ads (none vs shown) and ratings volume (8 vs 1). On price, update cadence, 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

Both are free to download. KnowTree sells 1 one-off in-app purchase and Thirds sells 4 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Thirds holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Thirds has 8 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

KnowTree ships an update every 9 days, Thirds every 11 days. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

Scorecard3 real differences · 7 level
KnowTree versus Thirds: the parameters behind the verdict, then further details
ParameterKnowTreeThirds
PriceFreeFree
Rating4.0 (1 ratings)5.0 (8 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings18 — better
Update frequencyEvery 9 days — betterEvery 11 days
AdsYesNo — better
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.115.1
Further details — not scored
Size51 MB50 MB
Age rating4+4+
DeveloperUkon RyoheiGo Mode LLC

In-app purchases

1 purchases

KnowTree

One-time1
  • KnowTree Premium$4.99
4 purchases

Thirds

Subscriptions3
  • Thirds Pro - Monthly$4.991 Month
  • Thirds Pro - Weekly$4.997 Days
  • Thirds Pro - Annual7 Days trial$29.991 Year
One-time1
  • Thirds Pro - Lifetime$59.99

Questions

Is KnowTree free?
KnowTree is free to download, with in-app purchases available.
Is Thirds free?
Thirds is free to download, with in-app purchases available.
Which has better reviews, KnowTree or Thirds?
Thirds is rated higher. KnowTree averages 4.0 out of 5 from 1 ratings, while Thirds averages 5.0 from 8 ratings.
Do KnowTree or Thirds have ads?
KnowTree shows ads; Thirds does not.
Which is updated more often, KnowTree or Thirds?
KnowTree ships an update every 9 days, and Thirds every 11 days. Most recently, KnowTree was updated on October 24, 2026 and Thirds on October 22, 2026.

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