Instant Jot vs Second Brain Vault
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Instant Jot
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Jot it down instantly. Send it with one tap. Because the best place for notes is where you already look. This app is a lightweight note tool built for one purpose only: to send ideas and reminders to your own email address with the fewest possible steps. Your inbox becomes a natural place for notesβa place you already check regularly. No new system to learn. Just send it now and find it later. β Jot and send, instantly Open the app, type, and send. Thatβs it. No complex features. No folders to manage. Just capture the thought before itβs gone. β Notes go straight to your inbox Send notes to Gmail, Outlook, or any email service you already use. Organize them using email search, labels, or folders. No manual syncing requiredβyour inbox keeps everything in sync. β Minimal setup, privacy-focused - Setup requires only your destination email address - No account registration, no tracking - Notes are removed from the app once sent, leaving no local copy Your notes stay in your emailβnot in the app. β Ideal for people who: - Think of ideas on the go and want to review them later on a PC - Are tired of bloated note-taking apps with features they donβt need - Prefer keeping notes where theyβre easy to notice - Want a simple and secure way to handle personal notes Capture your thoughts in seconds. Let your inbox take care of the rest.
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
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Verdict
The clearest difference is iOS requirement: Instant Jot at 15.1 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. Instant Jot sells 1 one-off in-app purchase and Second Brain Vault sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | Instant Jot | Second Brain Vault |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 11 days | β |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPod β better | iPhone |
| Requires iOS | 15.1 β better | 26.0 |
| Further details β not scored | ||
| Size | 33 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Masataka Aoki | Byoungho Kim |
In-app purchases
Instant Jot
- Remove sending limit$2.99
Second Brain Vault
- Second Brain Vault (Lifetime)$17.99
Questions
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Is Second Brain Vault free?
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