Comparison

MindSky vs CogniLog

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

Head to head
About

MindSky

Features
Read full description

MindSky is a peaceful space for your thoughts. Instead of lists and folders, your ideas float gently across a living sky. Capture thoughts as soft clouds, organize them naturally, and dive deeper into the ideas that matter most. Whether you’re journaling, brainstorming, reflecting, or simply clearing your mind, MindSky transforms note-taking into a calm and visual experience. FEATURES Floating Thought Clouds Create thoughts that drift naturally across your personal sky. Mood-Based Thoughts Assign moods to your thoughts with beautiful colors and expressive emotions. Deep Dive Into Ideas Drop a thought into the Deep Dive zone to create a dedicated space for exploring related ideas and sub-thoughts. Pin Important Thoughts Keep important thoughts anchored in place while others continue to drift. Thought Details & Notes Expand any thought with notes, reflections, and additional context. Recover Lost Thoughts Accidentally deleted something? Restore thoughts from the Lost Thoughts area for up to 7 days. Gentle, Distraction-Free Design No feeds, no pressure, no complexity—just a calm space for your mind. Perfect for: • Journaling • Brainstorming • Creative thinking • Reflection • Mindfulness • Personal knowledge capture • Daily thought tracking Let your thoughts float. Discover where they lead.

About

CogniLog

This app helps you document your work, capturing decisions and reasoning. It allows an AI assistant to read your log and answer questions about your past activities. Entries are plain text with Markdown support, and a visual almanac helps you navigate your history.

Highlights
  • AI-powered work log analysis
  • Plain text entries with Markdown
  • Visual almanac for historical navigation
  • Project-based channels and #tags
  • Cross-device sync via iCloud
  • Import from other note-taking apps
Features
Read full description

CogniLog is a work log for anything worth remembering. It captures the story behind your work: the decisions, the dead ends, and the reasoning you would otherwise forget. Whether your days are made of code, meetings, deliverables, chapters, or experiments, you write it down once and get it back whenever you need it. The work log your AI can read. CogniLog's macOS version comes with a built-in connection (an MCP server) that lets an AI assistant you already use, like Claude, read your log and answer questions about your own work, even entries authored in the iOS version. Ask what you were doing last week, or why you made a call three months ago. Your assistant can even add entries of its own, so the two of you share one space that you both write to and read from. Write the way you already write. Entries are plain text with light Markdown, and they format as you type. Headings become headings, code becomes code. Drop in a #tag and CogniLog files it for you, and channels keep each project or context separate. No forms, no fields, just the log. See the year, drill to the moment. Capture is only half the job. The Almanac turns your log into a map. Scan whole months at a glance, hover any day for a summary of what happened, and drill from the year down to a single entry. Come back from a busy week, or a week away, and pick the thread back up. Built native, and it feels it. A real Mac app and a real iPhone app, not a website in a wrapper. Log from your Mac while you work, or catch a thought on your phone while you wait in line. Capture meets you where you are, from the menu bar to the lock screen widget, with optional daily and streak reminders. Yours, and only yours. No new accounts and no servers of ours. Your log stays on your devices and syncs through your own iCloud when you want it everywhere. Using the macOS version bring your history in from apps like Apple Notes, Day One, Obsidian, and Bear, or any Markdown files, viewing it on your iOS device; and take it all back out as plain Markdown any time. No lock-in, no ads, no tracking. Currently free. Everything in the app is free right now. If that ever changes, it won't change for the people already here. CogniLog is made by Rivet and Rune, a small studio building native tools and experiences.

Screenshots

MindSky4 screens
CogniLog4 screens

Verdict

The call

MindSky and CogniLog are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

MindSky ships an update every 5 days, CogniLog every 6 days. The most recent releases landed on October 1, 2026 and October 11, 2026 respectively.

ScorecardNo meaningful differences
MindSky versus CogniLog: the parameters behind the verdict, then further details
ParameterMindSkyCogniLog
PriceFreeFree
Rating—5.0 (3 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 5 days — betterEvery 6 days
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPadiPhone, Mac
Requires iOS26.0 — better26.2
Further details — not scored
Size16 MB51 MB
Age rating4+4+
DeveloperKane HastingsRivet Rune LLC

In-app purchases

None

MindSky

No in-app purchases

None

CogniLog

No in-app purchases

Questions

Is MindSky free?
MindSky is free to download, with no in-app purchases.
Is CogniLog free?
CogniLog is free to download, with no in-app purchases.
Do MindSky or CogniLog have ads?
Neither MindSky nor CogniLog shows ads.
Which is updated more often, MindSky or CogniLog?
MindSky ships an update every 5 days, and CogniLog every 6 days. Most recently, MindSky was updated on October 1, 2026 and CogniLog on October 11, 2026.

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