Comparison

NoteStream vs Structured Outliner

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

Head to head
About

NoteStream

Features
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NoteStream is a fast, distraction free note taking app designed to keep your ideas flowing. Capture, organize, and revisit your thoughts instantly, even without an internet connection. Whether you're jotting down a quick idea, writing meeting notes, recording an audio note, or building a personal knowledge base, NoteStream stays out of your way so you can focus on what matters: thinking clearly. Key Features: โ€ข Lightning fast capture: start writing the moment you open the app โ€ข Works offline: your notes are always available, no internet required โ€ข Clean, minimal interface: no clutter, just your thoughts โ€ข Sync across devices: pick up right where you left off โ€ข Organize effortlessly: keep your notes structured without the overhead โ€ข Shortcuts: use Siri shortcuts to capture voice and text notes instantly โ€ข Relations: link notes and build connections between ideas โ€ข Multiplayer editing: share notes and collaborate in real time โ€ข Hashtags and mentions: organize and connect ideas effortlessly โ€ข Offline search: quickly find anything with powerful filters โ€ข To dos: get that satisfying dopamine hit when you complete tasks NoteStream is built for thinkers, writers, builders, and anyone who wants a better way to capture and connect ideas without friction.

About

Structured Outliner

Features
Read full description

Keep your entire outline in a single portable file you control. No account, no server, no lock-in, future-proof. ORGANIZE IN UNLIMITED DEPTH Build trees as deep as you need. Expand, collapse, and reorder topics with just a few taps. Every topic can have its own notes. Write as much or as little as you like. SEARCH EVERYTHING Search titles or note content at once. The tree expands automatically to show every match in context, so you always know where a result lives in your outline. CROSS-LINK TOPICS Link any note to another topic using the outlook: link format. Tap to jump directly there. Tap the back arrow to return where you came from. OPEN FILES AND URLS Tap any file path or URL inside a note to open it. Connect your outline to existing documents in the folder: PDFs, photos, or anything else you reference. COLOR LABELS Assign a background color to any topic: Red, Orange, Yellow, Green, Blue, or Purple. The color flows down to all child topics that don't have their own. Use it to visually separate sections at a glance. AUTOMATIC BACKUPS The app writes a .bak backup before every save. Restore at any time from the menu. SYNC YOUR WAY Store your file in iCloud, Dropbox, Google Drive, or any Files-compatible provider. Open it from there on each device. No special sync setup required. MEMPAD COMPATIBLE Structured Outliner uses the same .lst format as MemPad for Windows, a portable outliner that has been around since the early 2000s. Open existing MemPad files directly, no conversion needed. FREE VERSION Structured Outliner is free to use. Development is supported by a small banner ad shown at the bottom of the screen. PRO VERSION Upgrade to Pro to remove the banner ad, unlock Color Labels and Topic + Note Search and future planned features. One-time purchase. Restore on any device from the menu.

Screenshots

NoteStream3 screens
Structured Outliner4 screens

Verdict

The call

The clearest difference is in-app purchases: NoteStream at none against Structured Outliner's 1. NoteStream also leads on ads (none vs shown) and iOS requirement (14.0 vs 17.0). On price, update cadence and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Structured Outliner sells 1 one-off in-app purchase. NoteStream asks for nothing beyond the download.

UpkeepUpdate frequency

NoteStream ships an update fortnightly, Structured Outliner every 9 days. The most recent releases landed on October 5, 2026 and October 7, 2026 respectively.

Scorecard3 real differences ยท 3 level
NoteStream versus Structured Outliner: the parameters behind the verdict, then further details
ParameterNoteStreamStructured Outliner
PriceFreeFree
Update frequencyFortnightlyEvery 9 days โ€” better
AdsNo โ€” betterYes
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS14.0 โ€” better17.0
Further details โ€” not scored
Size43 MB6 MB
Age rating4+4+
DeveloperIdeaFlow, Inc.Felipe Carraro

In-app purchases

None

NoteStream

No in-app purchases

1 purchases

Structured Outliner

One-time1
  • Pro Version$7.99

Questions

Is NoteStream free?
NoteStream is free to download, with no in-app purchases.
Is Structured Outliner free?
Structured Outliner is free to download, with in-app purchases available.
Do NoteStream or Structured Outliner have ads?
Structured Outliner shows ads; NoteStream does not.
Which is updated more often, NoteStream or Structured Outliner?
NoteStream ships an update fortnightly, and Structured Outliner every 9 days. Most recently, NoteStream was updated on October 5, 2026 and Structured Outliner on October 7, 2026.

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