Comparison

Second Brain vs Sage

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

Head to head
About

Second Brain

Capture your thoughts and get weekly insights into your week's focus, changes, and actionable advice. Search your notes by meaning, manage contacts, and set reminders with ease. Your personal reflection tool, designed for daily use.

Highlights
  • Weekly self-insight reports
  • Search notes by meaning
  • Contact management
  • Automated titling and tagging
  • Reminders and checklists
  • On-device and cloud AI options
  • Data export (JSON/Markdown)
Features
Read full description

Most notes get written once and never read again. Second Brain reads them for you. Write a line whenever something is on your mind, and once a week it tells you what your week was really about. You don't need to keep a diary or a streak. One line a day is enough. YOUR WEEK, READ BACK TO YOU The weekly insight covers what took up your attention, what changed since last week, and one concrete thing to try. Every insight shows the notes it came from, so you can check it against what you actually wrote. Your first weekly insight is free. Once a month you get a longer read on where the month went. After your first five notes there's also a first impression of you, and it fills in as you keep writing. CAPTURE Type, or press and hold to speak. Share text, links or images from other apps, or pick screenshots and the text in them is read on your phone. Each note gets a title and tags automatically, so there's nothing to file. ASK YOUR PAST Explore searches by meaning, not only keywords. Ask "What did I decide about the move?" or "What did Anna say last time?" and get an answer built from your own notes. PEOPLE Keep a card for the people in your life: what they said, what you did together, what to bring up next time. Before you meet someone, a reminder shows your open to-dos and what you talked about last time. REMINDERS AND WIDGETS Write "dentist next Friday at 3pm" and it becomes a reminder and a checklist item. There are widgets for the Home Screen and Lock Screen, and the checklist can run as a Live Activity. PRIVACY Your notes are stored on your device. There's no account to create and no server of mine in between. To title, tag and reflect on your notes, their text is sent to a cloud AI service. If your iPhone supports Apple Intelligence, you can turn on On-Device AI and new notes are handled on the phone instead; Explore and reflections still use the cloud. Every AI result is labeled "On device" or "Cloud AI", so you can see which is which. iCloud sync is optional and uses your own iCloud account. You can export everything as JSON or Markdown at any time, for free. FREE AND PRO Free: 5 notes a day, daily reflections, your first weekly insight, and export. Pro: unlimited notes, weekly insights and monthly reads, 20 Explore questions a day, up to 30 screenshot imports a day, unlimited people, the memory graph and life themes, iCloud sync, and the Rainbow Aurora theme. Pro is a monthly or yearly subscription. The yearly plan comes with a 7-day free trial, the monthly plan with 3 days. Payment is charged to your Apple ID and renews automatically unless cancelled at least 24 hours before the end of the current period. You can manage or cancel it in your App Store account settings. Second Brain is made by one person, Lemon. Terms of Use: https://smartkiitos.com/secondbrain/terms/ Privacy Policy: https://smartkiitos.com/secondbrain/privacy/

About

Sage

Features
Read full description

Sage is a place to capture a thought and get back to what you were doing. Type it, dictate it, or share it from another app. Add photos and files to keep the context together. Your entries stay in one chronological feed. CAPTURE WITHOUT THINKING • Save text, photos, files and links in one entry • Share content to Sage from other apps • Save notes offline; AI processing resumes when you reconnect • Dictate in English with on-device speech recognition SEE YOUR THOUGHTS TAKE SHAPE • Sage categorizes entries after you save them • One entry can belong to more than one category • Topic threads collect the relevant entries automatically • Edit entries and correct their categories at any time • Create personal categories for your topics and projects ANALYSE WHEN YOU'RE READY • Tap Analyse to generate an AI insight for each thread with new entries • Each analysis considers new entries and earlier AI insights, so progress builds over time • Read the latest AI insight at the top of a thread and revisit source entries below it in date order YOUR NOTES STAY YOURS • Keep your notes on your device and sync them through your iCloud • Sign in with Apple is required • Content needed for categorization and analysis is sent securely through the Sage backend SAGE PLUS A Sage Plus subscription is required to use the app. It includes capture, categorization, analysis and access to every thread. Sage Plus costs $59.99/year or $8.99/month in the U.S. Eligible new subscribers can get a 3-day free trial. Prices may vary by region. Payment is charged to your Apple ID account at confirmation of purchase or after the free trial, where applicable. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in Settings → Apple ID → Subscriptions. Terms of Use: https://sagebrain.tech/terms/ Privacy Policy: https://sagebrain.tech/privacy/ Refund Policy: https://sagebrain.tech/refund/ Built for people whose attention is already full.

Screenshots

Second Brain4 screens
Sage4 screens

Verdict

The call

The clearest difference is iOS requirement: Second Brain at 17.0 against Sage's 26.0. On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Second Brain sells 2 in-app purchases, starting at $4.99 per month and Sage sells 2 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference · 9 level
Second Brain versus Sage: the parameters behind the verdict, then further details
ParameterSecond BrainSage
PriceFreeFree
Rating4.5 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 9 days—
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhoneiPhone
Requires iOS17.0 — better26.0
Further details — not scored
Size12 MB21 MB
Age rating4+17+
DeveloperLiwei XieMaksim Ermolaev

In-app purchases

2 purchases

Second Brain

Subscriptions2
  • Second Brain Pro3 Days trial$4.991 Month
  • Second Brain Pro7 Days trial$39.991 Year
2 purchases

Sage

Subscriptions2
  • Sage Plus Monthly3 Days trial$8.991 Month
  • Sage Plus Yearly3 Days trial$59.991 Year

Questions

Is Second Brain free?
Second Brain is free to download, with in-app purchases available.
Is Sage free?
Sage is free to download, with in-app purchases available.
Do Second Brain or Sage have ads?
Neither Second Brain nor Sage shows ads.

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