Comparison

Rocket Memo vs Second Brain Vault

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

Head to head
About

Rocket Memo

Capture thoughts instantly with a fast, distraction-free editor. Organize notes with tags and find them quickly using a powerful search. Set reminders for important items to ensure nothing is forgotten.

Highlights
  • Instant thought capture
  • Distraction-free editor
  • Tag-based organization
  • Lightning-fast search
  • Note reminders
  • Cross-device support
Features
Read full description

Simple. Fast. Smart. Capture your thoughts instantly and keep them perfectly organized. A sleek, lightweight notes app designed to move as fast as your ideas. Write Write the moment inspiration strikes. A clean and focused editor helps you stay in the flowβ€”no distractions, no delays. Organize Stay organized with tags. Work, personal notes, ideas, listsβ€”create your own simple yet powerful system of organization. Search Find what you need, instantly. A lightning-fast search engine filters thousands of notes in a flash. Remind Forget nothing. Set reminders for important notes and get notified right on time. Whether you’re working, planning, or just thinking out loud, this app keeps up with your mindβ€”simple, functional, and beautifully fast.

About

Second Brain Vault

Features
Read full description

β€œWhere did I save that?” β€” now you can just ask. Save a note, photo, PDF, voice memo or link; the on-device AI titles, summarizes and tags it, then finds it by meaning later. Free for 100 saves. No account, no server. We're all good at saving. The real question was always "where did I put that?" Second Brain Vault flips the order: you save, the AI organizes and recalls. HOW IT WORKS β€’ Save in one tap β€” a note, a photo, a voice memo, a PDF, or a web link. Anything, instantly, into your vault. β€’ AI organizes it for you β€” every saved item gets a title, a summary, a category, and tags, automatically. Photos are read with OCR, voice is transcribed, PDFs and links have their text extracted. β€’ Recall like a person β€” ask "that real-estate article I read last year," "the best cold-noodle place I saved," "the app idea I jotted last month," and it finds the right memory. It's hybrid retrieval β€” semantic meaning plus keywords plus recency β€” so it works even when you don't remember the exact words. β€’ It grows with you β€” Insights show your top topics and saving trends, and every week the AI writes a short Retrospective of what you saved. The more you save, the higher your Brain Level. WHAT'S INSIDE β€’ Home β€” today's and recent items, plus a one-line AI insight β€’ Quick capture β€” five kinds: note, photo, audio, PDF, link β€’ Natural-language Recall β€” hybrid semantic + keyword + recency ranking β€’ Insights β€” top topics, save volume, Brain Level growth β€’ Weekly Retrospective β€” an AI recap of your week of memories β€’ Automatic categories & tags β€” organized without you filing anything PRIVACY BY CONSTRUCTION Everything is processed on this iPhone. Because it uses Apple's on-device AI (Foundation Models), your notes, photos, voice and documents never leave the device. No account, no server, no ads, no tracking. The only time it uses the internet is to fetch the page of a web link you choose to save. APPLE INTELLIGENCE REQUIRED Auto-organizing, natural-language search, Insights and the Retrospective run on Apple-Intelligence-capable devices. On other devices you can still save and search by keyword; the AI features show an "Apple Intelligence required" state. START FREE, UNLOCK WHEN YOU NEED IT Free: up to 100 items, full on-device AI organizing & search on all 100, every capture type, Insights and Brain Level included. Pro (β‚©6,600 / year): unlimited saves, iCloud backup & sync, weekly Retrospective history, and more. Lifetime (β‚©29,000, one-time): everything in Pro, forever, no renewal. You save it; Second Brain Vault remembers it. Drop in your first memory today. β–  Device requirements AI auto-organizing and semantic (meaning-based) search require an Apple Intelligence–capable device β€” iPhone 15 Pro / 15 Pro Max and iPhone 16/17 or later, iOS 26 or later. On other devices, saving and keyword search still work fully. Everything is processed on-device; nothing is ever sent off your iPhone. β–  Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://blue-code.github.io/legal/second-brain-vault/privacy.en.html

Screenshots

Rocket Memo4 screens
Second Brain Vault4 screens

Verdict

The call

The clearest difference is update cadence: Rocket Memo at every 2 weeks against Second Brain Vault's every 4 months. Rocket Memo also leads on iOS requirement (18.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Rocket Memo sells 4 one-off in-app purchases and Second Brain Vault sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Rocket Memo ships an update every 2 weeks, Second Brain Vault every 4 months. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard2 real differences Β· 6 level
Rocket Memo versus Second Brain Vault: the parameters behind the verdict, then further details
ParameterRocket MemoSecond Brain Vault
PriceFreeFree
Positive reviews80.0% of reviewsβ€”
Update frequencyEvery 2 weeks β€” betterEvery 4 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesβ€”
DevicesiPhone, iPad β€” betteriPhone
Requires iOS18.0 β€” better26.0
Further details β€” not scored
Size6 MB2 MB
Age rating4+4+
DeveloperYoshinori KasayaByoungho Kim

In-app purchases

4 purchases

Rocket Memo

One-time4
  • Small Coffee$0.99
  • RocketMemo Pro (One-Time)$2.99
  • Croissant & Coffee$3.99
Show 1 more
  • Cake & Coffee$9.99
1 purchases

Second Brain Vault

One-time1
  • Second Brain Vault (Lifetime)$17.99

Questions

Is Rocket Memo free?
Rocket Memo is free to download, with in-app purchases available.
Is Second Brain Vault free?
Second Brain Vault is free to download, with in-app purchases available.
Do Rocket Memo or Second Brain Vault have ads?
Neither Rocket Memo nor Second Brain Vault shows ads.
Which is updated more often, Rocket Memo or Second Brain Vault?
Rocket Memo ships an update every 2 weeks, and Second Brain Vault every 4 months. Most recently, Rocket Memo was updated on November 3, 2026 and Second Brain Vault on November 5, 2026.

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