Siftlee vs Second Brain Vault
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Siftlee
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You save and bookmark things all day. TikToks you swear you'll try. Screenshots of recipes you'll cook someday. A workout video from three months ago. A meme that made you laugh. A voice memo with a 2am idea. Then you can never find any of it again. The TikTok is buried under four hundred others, the screenshot is lost in your camera roll, the Instagram account goes private, the video gets taken down - and the thing you wanted to keep is just gone. Siftlee is your AI second brain. Save anything you might need later. When you want it back, just ask. And once a month, Siftlee does something no other app does with your saves: it writes you a magazine. THE SIFT - A MAGAZINE, WRITTEN FROM YOUR SAVES On the 1st of each month, Siftlee writes you a magazine about the month you just lived. The recipes you saved come back as real recipe cards. The rabbit holes you fell down become departments. The things you almost bought make the shopping pages, and the ideas worth acting on land in a shortlist at the end. It opens with an editor's letter about your month - because someone finally read all of it. Your issues live on a bookshelf at the top of Spaces. Pull a spine down and read your own month back. Not a member yet? A free sample issue is waiting on your shelf. WHAT YOU CAN SAVE - Videos & posts: TikToks, Instagram Reels & posts, YouTube videos, X posts, articles, blog posts - anything with a URL - Images: screenshots, photos, anything from your camera roll - Audio: voice memos, podcast clips, recordings - Documents: PDFs, Word files, text files Plus: save straight from TikTok, Instagram, Safari, X, YouTube or any app - just tap Share and pick Siftlee. WHAT SIFTLEE DOES WITH IT Siftlee reads, transcribes and understands what you save - including what's said in the videos. It automatically organizes related items into Spaces (broader categories) and Threads (related items within each space) - no folders, no tags, no manual filing. Then you search your entire library in plain English ("what did I save about Sicily?", "that pasta recipe from TikTok") and get an answer with cited sources, not a list of links to dig through. WHEN THE INTERNET DELETES, YOUR LIBRARY DOESN'T Videos get taken down. Accounts go private. Threads get nuked. What Siftlee captured - the meaning, the transcript, the source - stays in your library. X posts are even saved through the official X API, so when the original disappears, your copy survives. WHY IT'S NOT JUST YOUR FAVORITES FOLDER Your TikTok favorites, your camera roll, your bookmarks - that's where saves go to pile up. You can't search them by what's inside, they don't talk to each other, and they vanish when a video does. Siftlee is one library for all of it, searchable by meaning, every save linked to its source. SIFTLEE PREMIUM Try Siftlee free: save anything - TikToks, Instagram Reels, YouTube videos, links, voice memos, documents - with a starter run of saves and searches on the house. Premium removes every limit and delivers The Sift: your own monthly magazine, on the 1st. Subscriptions are auto-renewing - current plans and pricing are shown in the app. Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. PRIVACY Siftlee uses third-party AI providers to process the content you save. Full details are in our Privacy Policy. Your library is yours - delete any item or your entire account anytime. Privacy Policy: https://siftlee.com/privacy/ Terms of Use: https://siftlee.com/terms/ Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Second Brain Vault
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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 Intelligenceβcapable 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
Verdict
The clearest difference is iOS requirement: Siftlee at 17.2 against Second Brain Vault's 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
Both are free to download. Siftlee sells 3 in-app purchases, starting at $9.99 per 7 days and Second Brain Vault sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | Siftlee | Second Brain Vault |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | β |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone |
| Requires iOS | 17.2 β better | 26.0 |
| Further details β not scored | ||
| Size | 30 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Ainur Corp. | Byoungho Kim |
In-app purchases
Siftlee
- Weekly$9.997 Days
- Monthly$19.991 Month
- Annual$129.991 Year
Second Brain Vault
- Second Brain Vault (Lifetime)$17.99









