Comparison

Messo vs Second Brain

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

Head to head
About

Messo

Features
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Messo is a simple to-do list, task manager, and notes app that helps you organize everyday tasks in one clean, flexible space. Create to-do lists, add tasks, track important dates, and keep notes together β€” without switching between multiple apps. Use spaces to separate your work, personal life, and important events, so everything stays clear and focused. Stay organized with to-dos and tasks Create simple to-do lists and individual tasks Check items off and track progress at a glance Focus on what needs to be done today Organize everything in spaces Separate work, personal tasks, and events Keep related items together in one view Switch between spaces as your priorities change Available widgets Messo lets you add different widgets to each space: To-Do β€” simple checklists for everyday tasks Task β€” individual tasks with progress tracking Countdown β€” track birthdays, events, and deadlines Time Since β€” see how much time has passed since an important date Notes β€” write quick thoughts and reminders Clock β€” view the current time for selected locations Clean and distraction-free Minimal design that’s easy to scan No complex setup or unnecessary features Designed for clarity and daily use Messo is ideal if you’re looking for a lightweight to-do app that combines tasks, lists, countdowns, time tracking, and notes in one simple workspace.

About

Second Brain

Features
Read full description

Second Brain is your offline-first personal knowledge management app. Capture every idea, note, and insight β€” and never lose a thought again. No ads. No tracking. No account required. Your data stays on your device. FEATURES: β€’ Rich Notes β€” Write with Markdown support, add images, link notes together β€’ Collections β€” Organize notes into collections with icons and colors β€’ Tags β€” Tag anything for instant filtering β€’ Daily Notes β€” One note per day, automatically created β€’ Goals β€” Track personal goals with milestones and progress β€’ Book Notes β€” Capture key takeaways from books you read β€’ Quotes β€” Save your favorite quotes β€’ Knowledge Graph β€” See how your ideas connect visually β€’ Bi-directional Links β€” Link notes and see backlinks automatically β€’ Full-Text Search β€” Find anything instantly β€’ Favorites & Archive β€” Star important notes, archive the rest β€’ Quick Capture β€” Capture thoughts from the home screen widget β€’ Face ID / Touch ID β€” Lock your app for privacy β€’ iCloud Backup β€” Optional, off by default β€’ Export β€” PDF, CSV, Markdown β€’ 15 Languages β€” English, Turkish, Spanish, German, French, Italian, Portuguese, Dutch, Polish, Arabic, Japanese, Korean, Chinese, Russian PRIVACY FIRST: Second Brain collects zero data. No analytics, no tracking SDKs, no servers. Everything lives on your device. PREMIUM (one-time purchase): Unlock unlimited notes, collections, Knowledge Graph, exports, Face ID, and home screen widgets with a single lifetime purchase.

Screenshots

Messo4 screens
Second Brain4 screens

Verdict

The call

The clearest difference is in-app purchases: Messo at none against Second Brain's 1. Messo also leads on update cadence (every 4 days vs every 3 months). Second Brain's advantage is iOS requirement (15.0 vs 17.6). On price, ads 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

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

Both are free to download. Second Brain sells 1 one-off in-app purchase. Messo asks for nothing beyond the download.

UpkeepUpdate frequency

Messo ships an update every 4 days, Second Brain every 3 months. The most recent releases landed on September 23, 2026 and October 1, 2026 respectively.

Scorecard3 real differences Β· 3 level
Messo versus Second Brain: the parameters behind the verdict, then further details
ParameterMessoSecond Brain
PriceFreeFree
Update frequencyEvery 4 days β€” betterEvery 3 months
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPadiPhone, iPad, iPod β€” better
Requires iOS17.615.0 β€” better
Further details β€” not scored
Size81 MB25 MB
Age rating4+4+
DeveloperStas MorozovSelahattin Bozat

In-app purchases

None

Messo

No in-app purchases

1 purchases

Second Brain

One-time1
  • Second Brain Premium$9.99

Questions

Is Messo free?
Messo is free to download, with no in-app purchases.
Is Second Brain free?
Second Brain is free to download, with in-app purchases available.
Do Messo or Second Brain have ads?
Neither Messo nor Second Brain shows ads.
Which is updated more often, Messo or Second Brain?
Messo ships an update every 4 days, and Second Brain every 3 months. Most recently, Messo was updated on September 23, 2026 and Second Brain on October 1, 2026.

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