Comparison

Strflow vs Undone

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

Head to head
About

Strflow

This app offers a unique chat-style interface for taking notes, organizing them with tags, and setting reminders. It integrates seamlessly with iOS features and ensures your data is secure and exportable.

Highlights
  • Chat-style note-taking
  • Timeline organization
  • Tagging system
  • Todo lists and reminders
  • Quick capture from anywhere
  • Rich text editor
  • iCloud sync and backup
Features
Read full description

Strflow adopts a chat-style timeline format for incredibly simple and beautiful note-taking. Experience the simplicity of note-taking in a texting-yourself style. # Build Your Timeline As you jot down notes, a personal timeline naturally forms. With tags, you can also create timelines focused on specific topics. Tags can be attached or created from anywhere, and you can easily reorder them with drag & drop in the sidebar. # Todo & Reminders, Naturally in Your Timeline Strflow turns your checklists into a dedicated Todo timeline, so you can easily review tasks, check them off, and add new ones from a single view. You can also set notes for future dates and use them as reminders. Scheduled notes stay hidden until the right time, then gently surface with notifications—right when you need them. # Quick Notes Anywhere Sync quickly and capture notes from anywhere. Open the app and start typing instantly, access Strflow from the share sheet — no need to switch apps. # Native on iOS Strflow is designed natively for iOS, blending perfectly with its look and feel. It also integrates with system features like Apple Shortcuts and the share sheet—making it easy to fit into your workflow. # Your Data, 100% Yours Your data is stored safely on your device and in iCloud. When saved to iCloud, it’s encrypted with your iCloud Keychain. For those using iCloud’s Advanced Data Protection, enjoy the added security of end-to-end encryption. All data can also be exported as Markdown, so you can take it anywhere with no lock-in. # A Powerful Editor Strflow supports a wide range of rich-text editing features, including: • Link previews • Checklists • Note links • Inline formatting (bold, italic, etc.) • Block-level formatting (lists, code blocks, quote blocks, etc.) • Images --- Strflow lets you take unlimited notes for free. By joining Strflow Plus, you’ll unlock encrypted sync and backup via iCloud. Prices may vary by location. Subscriptions will be charged to your credit card via your App Store account. Your subscription will automatically renew unless canceled at least 24 hours before the end of the current period. Once activated, subscriptions cannot be canceled. Manage your subscriptions in your App Store Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited upon purchasing a subscription. The lifetime option is a one-time, non-renewing purchase that grants permanent access to Strflow Plus features. --- For any questions or feedback, please feel free to contact us at support@strflow.app. We are eager to assist and connect with you! Privacy policy: https://strflow.app/privacy-policy Terms of use: https://strflow.app/terms

About

Undone

Features
Read full description

Undone is a calm, minimal to-do and reminders app for iPhone. It works directly on top of Apple Reminders, so your tasks stay in the system you already use—no extra account, no import, no new database. See your day at a glance: today's tasks are grouped by morning, afternoon, and evening, with unscheduled items kept separate so nothing gets lost. Anything without a date waits in your Inbox until you are ready for it. Capture fast: type a quick note, or paste a whole list and let Undone split it into tasks and detect dates and times for you. Tap any result to fine-tune before creating. Decide what matters: the four-quadrant view sorts tasks into important & urgent, important but not urgent, urgent but not important, and neither, so you can focus on what deserves your attention first. Finish what you start: start a focus timer on any task, follow it from the Lock Screen and Dynamic Island with Live Activities, and mark the task done when the timer ends. Highlights: - Today view grouped by morning, afternoon, and evening - Inbox for ideas and undated tasks - Paste a list and auto-split it into tasks with dates and times - Four-quadrant priority view - Focus timer with Live Activities - Home Screen and Lock Screen widgets - Light and Dark appearance - Syncs directly with Apple Reminders, no account required Undone is free to use. Undone Pro is a one-time purchase that unlocks the four-quadrant view and future premium features, and it is shared with the Mac version of Undone. Terms of Use https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy https://2309.notion.site/Undone-39752211e9e280cabc79d0c7809dba12

Screenshots

Strflow4 screens
Undone4 screens

Verdict

The call

The clearest difference is update cadence: Undone at every 2 days against Strflow's fortnightly. Strflow's advantage is iOS requirement (18.0 vs 26.0). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Strflow sells 4 in-app purchases, starting at $1.49 per month and Undone sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Strflow ships an update fortnightly, Undone every 2 days. The most recent releases landed on November 4, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 8 level
Strflow versus Undone: the parameters behind the verdict, then further details
ParameterStrflowUndone
PriceFreeFree
Rating5.0 (51 ratings) — better—
Positive reviews97.1% of reviews—
Number of ratings51 — better—
Update frequencyFortnightlyEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, Mac — betteriPhone, Mac
Requires iOS18.0 — better26.0
Further details — not scored
Size80 MB4 MB
Age rating4+4+
DeveloperShingo Eguchi金苹 卢

In-app purchases

4 purchases

Strflow

Subscriptions2
  • Strflow Plus (Monthly)7 Days trial$1.491 Month
  • Strflow Plus (Annual)14 Days trial$14.991 Year
One-time2
  • Strflow Plus (Lifetime, Subscriber)$27.99
  • Strflow Plus (Lifetime)$37.99
1 purchases

Undone

One-time1
  • Undone Pro 永久会员$4.99

Questions

Is Strflow free?
Strflow is free to download, with in-app purchases available.
Is Undone free?
Undone is free to download, with in-app purchases available.
Do Strflow or Undone have ads?
Neither Strflow nor Undone shows ads.
Which is updated more often, Strflow or Undone?
Strflow ships an update fortnightly, and Undone every 2 days. Most recently, Strflow was updated on November 4, 2026 and Undone on October 25, 2026.

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