Comparison

Second Brain Vault vs Linkfisher

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

Head to head
About

Second Brain Vault

Features
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Second Brain Vault isn't another folder-organizing app. You just save β€” the on-device AI files it for you and finds it back later when you ask in plain language. A private memory vault that lives entirely on your iPhone. 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

About

Linkfisher

Features
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【 Ever saved something, only to never find it again? 】 We jump between countless apps every single day: funny IG Reels, YouTube tutorials, X (Twitter) threads, and product finds. We habitually hit "Save" or "Favourite." But the result? Two days later, when you actually want to watch that video or buy that item, your mind goes blank. You completely forget which app's endless favourite list it's buried in. 【 Linkfisher: The ultimate cure for link chaos 】 Linkfisher is your single, beautiful home for every link you care about. No more digging through ten different apps or apologising for spamming your partner's inbox. If it’s a link, just Catch it, and Linkfisher will handle the rest. 【 See what you saved, instantly 】 URLs are ugly and impossible to read. Linkfisher automatically transforms every saved link into a clean, rich visual card with an image and title. Whether it's a sneaker drop, a recipe, or a coding tutorial, you’ll recognise it at a single glance. 【 Buckets, Categories, and Tags 】 Everyone’s brain works differently, so we don't force you into one rigid system. Linkfisher gives you a flexible toolkit to manage your collection. Toss your links into Buckets (like "Travel Plans" or "Tech Setup"), group them by Categories, and apply specific Tags for lightning-fast filtering. Build an organisation system that actually fits your habits. 【 Collaborate in Shared Buckets 】 Remember those friends you used to spam with links? As a registered member, you can create Shared Buckets and invite others to be collaborators. Whether you and your partner are planning an upcoming trip, or your team is gathering inspiration for a project, everyone can Catch and drop links into the exact same space. It’s multiplayer bookmarking without the messy group chats. 【 Swipe to sort, toss into Buckets 】 Got a massive backlog of unsorted links? We made cleaning up actually fun. Swipe right to keep, or swipe left to release it. Clear out your digital clutter in seconds without the headache. 【 All your catches, always in sync with Link Aquarium 】 Whether you are browsing on your phone on the train or working on your iPad, Linkfisher keeps everything perfectly synced, literally in real-time. Stop hoarding browser tabs and stop treating your friends as your personal bookmark folders. Give your links a proper home. Catch your first link today and take back control of your digital life. Terms of Use: https://linkfisher.app/terms Privacy Policy: https://linkfisher.app/privacy

Screenshots

Second Brain Vault4 screens
Linkfisher4 screens

Verdict

The call

The clearest difference is ads: Second Brain Vault at none against Linkfisher's shown. Linkfisher's advantage is iOS requirement (18.0 vs 26.0). On price, 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. Second Brain Vault sells 1 one-off in-app purchase and Linkfisher sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Scorecard2 real differences Β· 4 level
Second Brain Vault versus Linkfisher: the parameters behind the verdict, then further details
ParameterSecond Brain VaultLinkfisher
PriceFreeFree
Update frequencyβ€”Fortnightly
AdsNo β€” betterYes
In-app purchasesYesYes
DevicesiPhoneiPhone
Requires iOS26.018.0 β€” better
Further details β€” not scored
Size2 MB52 MB
Age rating4+4+
DeveloperByoungho KimOne Eternal

In-app purchases

1 purchases

Second Brain Vault

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

Linkfisher

Subscriptions2
  • The Kingfisher (Monthly)3 Days trial$2.991 Month
  • The Kingfisher (Yearly)7 Days trial$19.991 Year

Questions

Is Second Brain Vault free?
Second Brain Vault is free to download, with in-app purchases available.
Is Linkfisher free?
Linkfisher is free to download, with in-app purchases available.
Do Second Brain Vault or Linkfisher have ads?
Linkfisher shows ads; Second Brain Vault does not.

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