Comparison

Insight Flow vs Second Brain

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

Head to head
About

Insight Flow

Features
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There are insights that can only be discovered among the things you've saved. Every day you encounter countless pieces of information — but most of them slip away. Links stay in the browser, images in the gallery, notes in the notes app — and when you actually need them, they're nowhere to be found. InsightFlow brings your scattered insights together in one place, and lets AI find the connections hidden within them. ā–  Effortless Saving Save links, images, and text in seconds. Use the share button from any app to save instantly. Add a note while saving so you never lose the context. ā–  AI Insight Feed AI analyzes your saved content and surfaces related insights in your feed. It's not just a list — it's the experience of discovering connections between what you've collected. ā–  Flow — Your Personal Knowledge Map Connect insights as nodes to build a visual knowledge structure. Add memos to connections to capture the context and relationship between two insights. As connections grow, AI synthesizes your ideas and suggests next action plans. Feel scattered thoughts come together into a single, coherent flow. ā–  Reminder Insights you saved and forgot will find their way back to you. Set your preferred reminder frequency — daily, weekly, or biweekly. Experience the moment when an old insight returns with a whole new perspective. ā–  Archist — Your Knowledge Journey The more you save and connect, the higher your level grows. Achievements stack up based on saves, connections, and depth of exploration — and your personal Archist rank evolves with you. Let the act of building knowledge become a journey of its own. ā–  InsightFlow Pro Unlimited Flow connections, widgets, Notion/PDF export, and more. If you're ready to go deeper, try InsightFlow Pro. Value begins the moment you save. Start InsightFlow today. ——— Developer Contact: Temaworks 804, 124 Unjung-ro, Dongan-gu, Anyang-si, Gyeonggi-do, Republic of Korea alex@temaworks.com

About

Second Brain

Features
Read full description

Speak or type one messy thought. Second Brain separates every intention, creates the right Apple Reminder, Calendar event, or Markdown update, and shows exactly what changed. Your tasks stay in Apple Reminders, your dates stay in Apple Calendar, and your knowledge stays in ordinary Markdown files you control. VOICE TO ACTION • Speak or type when one thought contains several intentions • Attach an existing image or take a photo without leaving the capture • Turn things you need to do into Apple Reminders • Put meetings, deliveries, and passive dates into Apple Calendar • Create, append to, or update the right Markdown page • Keep dates and times exactly as you expressed them SEE AND CONTROL EVERY CHANGE Each capture keeps your words and a receipt for every result. Review destinations, confirm pending events, retry failures, repair exact duplicates, or undo supported changes. YOUR TOOLS, NOT ANOTHER SILO • Tasks live in Apple Reminders • Events live in Apple Calendar • Context stays in ordinary Markdown files • Use the recommended iCloud Drive folder, another Files folder, or an Obsidian vault • Capture from Siri, Shortcuts, widgets, Control Center, the share sheet, or the Action Button KNOWLEDGE WITH SOURCES Ask questions about your pages and inspect linked sources. Search in the app, Siri, or on-device Spotlight. Projects keep notes, pages, reminders, events, and recent activity together. MANAGED INTELLIGENCE Managed Intelligence is an optional monthly or annual App Store subscription for hosted OpenAI processing. The secure service verifies access and limits, stores no request bodies, and deletes temporary results after acknowledgement or within 24 hours. EXTERNAL AI PROVIDER CONNECTIONS Settings > AI & Providers can connect an existing Anthropic or OpenAI developer account as an external service. Second Brain does not sell provider access or include provider sign-up, pricing, or purchase links. The credential stays in Apple Keychain, and requests go directly to the selected provider under that provider's terms. PRIVATE BY DESIGN Before any personal data is sent to an AI service, Second Brain names the recipients and data categories and asks for permission. Choose Use Without AI to keep all AI transmission disabled while local capture, notes, reminders, events, and search remain available. Managed requests go to Second Brain's Cloudflare-hosted service and then OpenAI. Personal-key text requests go directly to OpenAI or Anthropic. Permission can be reviewed or withdrawn in Settings > Privacy & AI. Voice can be transcribed fully on device with Apple Speech, so audio never uploads, or through an optional permission-gated online route. When Online transcription is selected, recordings go to OpenAI directly or through the managed Cloudflare route. Failed or cancelled online uploads preserve the local recording for retry. Photos stay local unless the user includes them in an authorized AI request. There is no Second Brain login, advertising, or tracking. Firebase Analytics and Crashlytics receive content-free product or diagnostic data, never captures, transcripts, audio, chat, files, titles, keys, or model content. The public What Gets Sent view and content-free privacy ledger show the applicable routes and transfers. SUBSCRIPTION TERMS Payment is charged to your Apple Account at confirmation. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours before the period ends. Manage or cancel subscriptions in your Apple Account settings. Any trial converts to the selected paid plan unless canceled before the trial ends. Terms of Use: https://second-brain-in-motion.heartsker.chatgpt.site/terms Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://second-brain-in-motion.heartsker.chatgpt.site/privacy

Screenshots

Insight Flow4 screens
Second Brain4 screens

Verdict

The call

The clearest difference is iOS requirement: Insight Flow at 16.0 against Second Brain's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Insight Flow ships an update every 3 days, Second Brain every 5 days. Both last shipped on October 25, 2026.

Scorecard1 real difference Ā· 5 level
Insight Flow versus Second Brain: the parameters behind the verdict, then further details
ParameterInsight FlowSecond Brain
PriceFreeFree
Update frequencyEvery 3 days — betterEvery 5 days
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better18.0
Further details — not scored
Size67 MB17 MB
Age rating17+4+
Developersumin jinAleksandr Pustotin

In-app purchases

None

Insight Flow

No in-app purchases

None

Second Brain

No in-app purchases

Questions

Is Insight Flow free?
Insight Flow is free to download, with no in-app purchases.
Is Second Brain free?
Second Brain is free to download, with no in-app purchases.
Do Insight Flow or Second Brain have ads?
Neither Insight Flow nor Second Brain shows ads.
Which is updated more often, Insight Flow or Second Brain?
Insight Flow ships an update every 3 days, and Second Brain every 5 days. Most recently, Insight Flow was updated on October 25, 2026 and Second Brain on October 25, 2026.

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