Comparison

Second Brain Note vs Happycapy

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

Head to head
About

Second Brain Note

Organize your thoughts and tasks with a structured knowledge workspace. Capture ideas, visualize connections, and plan your days effectively. Streamline information collection and turn it into actionable insights for work, school, or personal life.

Highlights
  • Hierarchical idea capture with Brain Tree
  • Visual thinking with Mind Map
  • Flexible page-based writing in Notebooks
  • Goal tracking with Milestones and tasks
  • Daily planning with Calendar time boxing
  • Cost tracking for expenses
  • Personal knowledge library creation
Features
Read full description

Second Brain is a personal knowledge and productivity workspace designed to help you think clearly, plan intentionally, and keep your work and life organized in one place. Capture ideas in a structured Brain Tree, sketch relationships visually in Mind Map, manage notebooks and pages, track milestones, plan your days with calendar time blocks, organize notes in folders, monitor costs, and build a searchable compendium of important knowledge. Whether you are managing school, work, side projects, or daily life, Second Brain gives you one streamlined system for collecting information and turning it into action. Features - Brain Tree for hierarchical idea capture and organization - Mind Map for visual thinking and connected planning - Notebooks for flexible page-based writing - Milestones and tasks for goal tracking - Calendar time boxing for daily planning - Folders and notes for structured reference storage - Cost tracking for one-time, subscription, and usage-based spending - Compendium for building a personal knowledge library - iCloud backup and sync support across your devices - Clean, immersive interface designed for focused use 4.99$ A Month Required Subscription with 1 week free trial https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Happycapy

This AI-powered tool acts as a native computer in your browser and on your phone, offering over 30,000 skills and 150+ APIs. It can research, write code, create content, and manage operations 24/7 in a secure cloud sandbox.

Highlights
  • AI agent native computer
  • 30k+ ready-to-use skills
  • 150+ built-in APIs
  • Secure personal cloud sandbox
  • 24/7 task execution
  • Agentic interaction for real tasks
Read full description

Happycapy is an AI agent native computer in your browser and now on your phone. With 30k+ ready to use skills, 150+ built in APIs, and a secure personal cloud sandbox, it works for you 24/7. You can use agents to research, handle outreach, write code, create content, and manage operations all in one place. Happycapy has ranked #1 on both the weekly and monthly product on Product Hunt. AGENT-NATIVE EXPERIENCE Built from the ground up for agentic interaction. Instead of just answering questions, Happycapy AI takes on real tasks, breaks them down, executes each step, and reports back with results. BUILT-IN SKILLS LIBRARY Access a growing library of 30k+ purpose built skills for generation, coding, analysis, translation, summarization, brainstorming, and more. No prompt engineering required. CLOUD SANDBOX EXECUTION Delegate complex tasks to the cloud. This is why you can run Happycapy across both desktop and mobile, keep files consistent, and enable true 24/7 execution. Your local files stay untouched and secure. 150+ BUILT IN MODELS In addition to Claude models like Opus 4.7, Opus 4.6, and Sonnet 4.6, as well as Minimax m2.7 for agent workflows, Happycapy provides access to 150+ models that can be directly used by agents. No need to purchase or connect external APIs. 24/7 RUNNING AUTOMATION Set scheduled tasks and let Happycapy run them for you, even when your device is offline or powered off. SECURE BY DESIGN Your credentials are securely stored using the iOS Keychain. Your data stays private. Flexible Usage Options Happycapy AI is free to use with optional upgrades: - Subscribe to Pro for enhanced capabilities and higher usage limits - Pro subscribers can purchase additional credits through one-time in-app purchases that never expire Whether you're a professional looking to move faster, a creator seeking a thinking partner, or someone who wants AI that actually gets things done, Happycapy is built for you. Download Happycapy AI and experience what an AI agent can really do. SUBSCRIPTION TERMS ‣ Subscription options: Pro Monthly and Pro Yearly (auto-renewable) ‣ Pricing varies by region and is shown in-app ‣ Payment will be charged to your Apple ID account at confirmation of purchase ‣ Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period ‣ Your account will be charged for renewal within 24 hours prior to the end of the current period ‣ You can manage and cancel your subscriptions in your App Store account settings Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://happycapy.ai/privacy

Screenshots

Second Brain Note3 screens
Happycapy4 screens

Verdict

The call

The clearest difference is monetization model: Happycapy at freemium against Second Brain Note's subscription. Happycapy also leads on update cadence (every 10 days vs every 2 months) and iOS requirement (15.0 vs 26.4). On price, rating, review sentiment and ratings volume 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 Note sells 1 in-app purchase, starting at $4.99 per month and Happycapy sells 6 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Second Brain Note against 5.0 for Happycapy. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Second Brain Note ships an update every 2 months, Happycapy every 10 days. The most recent releases landed on September 18, 2026 and September 27, 2026 respectively.

Scorecard3 real differences · 7 level
Second Brain Note versus Happycapy: the parameters behind the verdict, then further details
ParameterSecond Brain NoteHappycapy
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings11
Update frequencyEvery 2 monthsEvery 10 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFreemium — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.415.0 — better
Further details — not scored
Size12 MB16 MB
Age rating12+9+
DeveloperChandler MostellerTRICKLE PTE. LTD.

Customer experience

Second Brain Note

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Happycapy

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Second Brain Note

Subscriptions1
  • Pro +7 Days trial$4.991 Month
6 purchases

Happycapy

Subscriptions2
  • Pro Monthly$19.991 Month
  • Pro Yearly$199.991 Year
One-time4
  • 750 Credits Pack$9.99
  • 1500 Credits Pack$19.99
  • 3750 Credits Pack$49.99
Show 1 more
  • 7500 Credits Pack$99.99

Questions

Is Second Brain Note free?
Second Brain Note is free to download, with in-app purchases available.
Is Happycapy free?
Happycapy is free to download, with in-app purchases available.
Which has better reviews, Second Brain Note or Happycapy?
Second Brain Note and Happycapy are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Second Brain Note or Happycapy have ads?
Neither Second Brain Note nor Happycapy shows ads.
Which is updated more often, Second Brain Note or Happycapy?
Second Brain Note ships an update every 2 months, and Happycapy every 10 days. Most recently, Second Brain Note was updated on September 18, 2026 and Happycapy on September 27, 2026.

Other comparisons