Comparison

Strflow vs Constella

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

Constella

Capture thoughts, synthesize ideas, and automate workflows in one place. This AI-powered tool connects notes, emails, and tasks to surface insights and allows for instant semantic search. It adapts to various thinking styles, making it ideal for professionals and creatives.

Highlights
  • Instant thought capture with text and images
  • AI synthesis across notes, emails, and apps
  • Semantic instant search
  • Smart automations and task delegation
  • Sync across devices
  • Integrates with Notion, Google Drive
Features
Read full description

Losing thoughts suck but organizing is painful, so we made the fastest way to capture and recall them without Instant Thought Capture: Jot down ideas the moment they strike. Quick-capture notes, links, and images from anywhere on your phone. Never forget a fleeting thought again. Thanks to AI indexing, you don't have to fumble with files and folders when organizing them. AI-Powered Synthesis Constella connects your notes, emails, newsletters, and tasks to surface insights you would have missed. Your personal AI understands context and finds relationships between your thoughts automatically. Smart Instant Search Find anything in seconds with AI-powered semantic search. No need to remember exact words or which folder you saved something in — just describe what you are looking for. Built for Those with Lots of Thoughts Key Features - Quick thought capture with text and images - AI synthesis across notes, emails, and apps - Semantic instant search across all your content - Smart automations and task delegation - Redesigned dashboard for faster navigation - Sync across devices with the desktop and web app - Integrates with Notion, Google Drive, and more - 475M+ research papers searchable Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.constella.app/legal/privacy-policy

Screenshots

Strflow4 screens
Constella4 screens

Verdict

The call

The clearest difference is rating: Strflow at 5.0 against Constella's 4.8. Strflow also leads on ratings volume (49 vs 8) and review sentiment (97% vs 88%). Constella's advantage is iOS requirement (16.4 vs 18.0). On price, update cadence, ads and in-app purchases 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 Constella sells 6 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Strflow holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Strflow has 49 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 97% of Strflow's written reviews are positive against 88% of Constella's.

UpkeepUpdate frequency

Strflow ships an update fortnightly, Constella every 10 days. The most recent releases landed on September 16, 2026 and August 24, 2026 respectively.

Scorecard4 real differences · 6 level
Strflow versus Constella: the parameters behind the verdict, then further details
ParameterStrflowConstella
PriceFreeFree
Rating5.0 (49 ratings) — better4.8 (8 ratings)
Positive reviews97.1% of reviews — better87.5% of reviews
Number of ratings49 — better8
Update frequencyFortnightlyEvery 10 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS18.016.4 — better
Further details — not scored
Size73 MB86 MB
Age rating4+4+
DeveloperShingo EguchiNora Studios

Customer experience

Strflow

All ratings49 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews34 reviews
Positive97.1%
Neutral0.0%
Negative2.9%

Constella

All ratings8 ratings
Positive87.5%
Neutral12.5%
Negative0.0%
Written reviews8 reviews
Positive87.5%
Neutral12.5%
Negative0.0%

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
6 purchases

Constella

Subscriptions4
  • Base7 Days trial$7.991 Month
  • Ultra7 Days trial$19.991 Month
  • Base Yearly7 Days trial$71.991 Year
Show 1 more
  • Ultra Yearly7 Days trial$179.991 Year
One-time2
  • Stella Call Credits - Small$2.99
  • Stella Call Credits - Big$5.99

Questions

Is Strflow free?
Strflow is free to download, with in-app purchases available.
Is Constella free?
Constella is free to download, with in-app purchases available.
Which has better reviews, Strflow or Constella?
Strflow is rated higher. Strflow averages 5.0 out of 5 from 49 ratings, while Constella averages 4.8 from 8 ratings.
Do Strflow or Constella have ads?
Neither Strflow nor Constella shows ads.
Which is updated more often, Strflow or Constella?
Strflow ships an update fortnightly, and Constella every 10 days. Most recently, Strflow was updated on September 16, 2026 and Constella on August 24, 2026.

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