AI memory layer for your workday — interesting concept, narrow MVP, premium-only.
Cogni is an AI memory layer that captures meetings, docs and chat into a queryable knowledge base — useful concept, narrow execution. There's no real productivity layer, no mobile, no free tier and pricing is a steep $25/month. LemTask is the productivity manager. Realistic answer for most readers: don't choose. Cogni captures and recalls; LemTask plans and executes the action items Cogni extracts.
Gamified task management with voice input, AI suggestions, and fun productivity features.
Knowledge workers who want AI to remember every meeting, doc and decision they touch.
| Detail | 🍋 LemTask | Cogni |
|---|---|---|
| Starting price | Free, Pro $14.99/mo | $25/mo, no free tier |
| Free tier limits | 10 active tasks, full AI + voice + gamification | None — paid only |
| Supported platforms | Web, iOS, Android, Mac, Windows, PWA | Mac, Web |
| Integrations | Google Calendar, Slack, Chrome, webhooks | Google Workspace, Slack, Notion |
| Languages | 9 (per-user) | English only |
| Founded | 2024 | 2024 |
| Best for | End-to-end personal + team productivity | Execs and PMs drowning in meeting context |
| Feature | 🍋 LemTask | Cogni |
|---|---|---|
| Per-User Language (9 languages) | Workspace-wide only | |
| AI memory over work history | ||
| Meeting action item extraction | Voice brain dump | |
| AI chat over own content | AI suggestions | |
| Tasks + projects + priorities | Extract only | |
| Habit tracking | ||
| Focus / Pomodoro timer | ||
| Gamification & XP | ||
| Calendar view | ||
| Native mobile apps | ||
| Free tier | 10 active tasks, full features | None — paid only |
Cogni is one of the more ambitious AI memory tools to launch in 2025. The pitch — 'AI that remembers every meeting, doc and decision' — is genuinely useful for execs, PMs and consultants who context-switch constantly. The MVP is narrow: $25/month with no free tier, no real productivity layer, no mobile. Cogni and LemTask aren't competitors so much as complements. Cogni captures and recalls. LemTask plans and executes the action items Cogni surfaces.
We built LemTask, so we'd love to say it wins everywhere. It doesn't. Here's where Cogni is the better pick — honestly.
AI memory over meetings, docs and chat is genuinely best-in-class — ask 'what did we decide about X' months later and get a real answer.
Action item extraction from meeting transcripts is more accurate than ours.
Privacy-first encrypted-at-rest architecture is unusually thoughtful for an AI tool.
Onboarding is fast — connect Google Workspace and the memory layer starts working in minutes.
Cogni is AI memory. LemTask is AI productivity. They overlap but don't compete.
Cogni captures the meeting; LemTask manages the action items it extracts.
Projects, priorities, calendar, focus and habits — Cogni has none.
Cogni's AI memory over meetings is genuinely useful for execs and PMs.
"Cogni remembers what was decided. LemTask makes sure the decided thing happens."
— Daniela R., Head of Product
Switched from Cogni
Spin the wheel and see who wins each feature matchup!
A quick, no-data-loss migration in a few steps.
If Cogni is solving your meeting-recall problem, don't migrate — use both. They don't overlap.
Sign up free at lemtask.com. Pipe Cogni's extracted action items into LemTask via Zapier or webhooks (Pro plan).
Two-way sync (Pro plan) so meetings Cogni captures appear next to the prep and follow-up tasks in LemTask.
Pick three priorities for the day from the action items Cogni extracted. The two tools form a complete loop: Cogni captures and remembers; LemTask runs the actual day.
No — Cogni is an AI memory layer. It captures meetings, docs and chat into a queryable knowledge base and extracts action items, but doesn't manage projects, priorities, due dates, habits or focus. For actual task management you'll want a separate tool like LemTask running alongside it.
Almost certainly both, if you can justify the cost. Cogni solves 'I can't remember what we decided'. LemTask solves 'I can't keep track of what I'm doing'. The combined cost is ~$40/month — only worth it if meeting recall is genuinely a daily pain. For most users LemTask alone covers 80% of the value.
Not at the same depth. LemTask has voice brain dump (speak for up to 5 minutes, get a structured task list) and AI suggestions over your task content. Cogni's AI memory over your full work history (meetings, docs, chat) is genuinely deeper — that's their core product. If 'ask my work history' is a daily workflow, Cogni wins.
Yes, via Zapier or webhooks (LemTask Pro plan). Cogni extracts action items from meetings; pipe them into LemTask as new tasks tagged 'from-meeting'. Most users we've spoken to use this combination — it's the cleanest way to close the loop between capture (Cogni) and execution (LemTask).
Yes, meaningfully. Cogni is $25/month with no free tier. LemTask Pro is $14.99/month, and the free plan keeps habits, AI suggestions, voice brain dump and gamification with a 10-active-tasks cap. If you only need one tool, LemTask covers a much wider surface for less money.
No — Cogni is purely a memory tool. There's no habit tracker, no Pomodoro timer, no streaks or gamification, no calendar view. LemTask bundles all of these into the same app on the free tier, which removes the need for multiple separate productivity subscriptions.
No — Mac and Web only as of April 2026. Mobile is on the roadmap. LemTask has full native iOS, Android, Mac, Windows and Web. If you need mobile capture for the action items that come out of meetings, LemTask is the more complete daily companion today.
Cogni publishes an encrypted-at-rest privacy policy and SOC 2 compliance roadmap, which is more than most early-stage AI tools. For genuinely sensitive meetings (legal, HR, M&A) most companies still hesitate to introduce a third-party AI listener — fair concern. LemTask doesn't touch your audio or transcripts at all, so the data exposure surface is fundamentally smaller.
We use both LemTask and the competing app daily across personal and team workflows. Pricing is taken directly from each vendor's public pricing page on the date listed below. Feature parity is checked by attempting the same job-to-be-done in both apps (capture, plan, execute, review). When a feature exists but is gated behind a higher tier, we say so explicitly. We also re-read the most recent G2, Reddit and Product Hunt threads about the competitor before publishing.