Comparison

Second Brain SB vs Decision Log

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

Head to head
About

Second Brain SB

Read full description

Second Brain is a note taking app that serves the purpose of acting like your second brain, storing information, and remembering easily what is the most important

About

Decision Log

Read full description

Decision Log is a tool for documenting important decisions, personal and professional. You record not just the decision itself, but why it was made, what the options were, and what comes out of it. So you can revisit your choices, learn from them, and spot patterns. Decide with clarity. Learn from experience. Every day you make decisions, at work, in life, in small habits. Unrecorded, they slip away quickly: why you're doing something, what the context was, what you're thinking. Decision Log helps you capture them, so you can see what really works and how things change over time. Not a journal. Not a habit tracker. Something that was missing in between. In a journal, important decisions drown between daily entries. In a habit tracker, you tick off days, but you never write down why you started, or why you stopped. Decision Log captures what gets lost in both: context, motivation, and the history of changes behind every decision. A habit, an experiment, a tool switch, a resolution โ€” all in one place, with an awareness that grows over time. A decision without context is just a faded memory. You change your diet, buy a flat, leave a project. A few months later, you remember what happened, but not why. And without the "why," you don't know if the decision worked or what the experience taught you. WHAT YOU GET FOR FREE - Track progress โ€” milestones, statuses, outcomes - Overwrite past decisions โ€” replacement chains keep the history visible - Collections, filters and search - Simple ready-to-use or customisable statuses and sections - Built-in templates or your own - Clean Markdown editor - Full history of changes - Import / Export (.md, .txt, ADR) WHEN DECISIONS PILE UP โ€” PRO - Focus mode with Workbench - Stats dashboard โ€” pace, patterns, status breakdown - Decision reviews โ€” a regular rhythm for revisiting decisions that haven't been touched in a while - Experiments with end dates - Hints for missing updates - Updates โ€” see how a decision changed over time - No limits on collections, templates and pinned decisions IT'S FOR YOU IF: - You set goals and want to act in line with what motivates you, not just tick off tasks - You feel like you keep repeating the same mistakes, and finally want to capture them - You keep a journal, but your most important decisions and conclusions drown in daily entries - You want structure that breaks decision paralysis and overthinking - You analyse and overthink a lot, and need a place to organise it - Your priority lists keep shifting, but the history disappears with them. You don't know what dropped off and why, what came back, or which time around this is - You make decisions that shape your life or career, and want to document them deliberately - You feel like you're constantly changing things, but can't see the bigger picture Start for free. Terms of Use (EULA): https://decisionlog.me/terms Privacy Policy: https://decisionlog.me/privacy

Screenshots

Second Brain SB3 screens
Decision Log4 screens

Verdict

The call

The clearest difference is in-app purchases: Second Brain SB at none against Decision Log's 2. Second Brain SB also leads on iOS requirement (11.0 vs 16.0). On price there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Decision Log sells 2 in-app purchases, starting at $4.99 per month. Second Brain SB asks for nothing beyond the download.

Scorecard2 real differences ยท 4 level
Second Brain SB versus Decision Log: the parameters behind the verdict, then further details
ParameterSecond Brain SBDecision Log
PriceFreeFree
Update frequencyโ€”Every 2 weeks
Adsโ€”No
In-app purchasesNo โ€” betterYes
Devicesโ€”iPhone โ€” better
Requires iOS11.0 โ€” better16.0
Further details โ€” not scored
Size26 MB66 MB
Age rating4+17+
DeveloperGianlucca VickKrzysztof Marczewski

In-app purchases

None

Second Brain SB

No in-app purchases

2 purchases

Decision Log

Subscriptions2
  • Decision Log Pro14 Days trial$4.991 Month
  • Decision Log Pro14 Days trial$39.991 Year

Questions

Is Second Brain SB free?
Second Brain SB is free to download, with no in-app purchases.
Is Decision Log free?
Decision Log is free to download, with in-app purchases available.

Other comparisons