Comparison

Notion vs AFFiNE

Notion lands on Worth it, and AFFiNE lands on Depends.

Notion

Worth it

Confidence: High

Buy if your team lives in docs, wikis, and light databases . the free tier makes trying it nearly free.

Read the full report

AFFiNE

Depends

Confidence: Medium

Buy if you're a solo user or tiny team wanting a free, privacy-first Notion+Miro hybrid and can tolerate rough edges.

Read the full report

Notion versus AFFiNE
Compare	Notion	AFFiNE
Verdict	Worth it	Depends
Best for	Docs-heavy teams	Privacy-focused solo note-takers
Who it's not for	Anyone who just needs a simple shared list or spreadsheet	Teams handling sensitive data . RCE CVE, ignored XSS reports
Privacy	SOC 2 Type II and ISO 27001 certified; Notion AI has documented prompt-injection data-exfiltration issues.^⁷	Active 2026 CVEs include remote code execution; researchers report ignored XSS findings; no dedicated security page found.
Support quality	No support-quality evidence in reviewed sources.	Security reports allegedly ignored for months
Public sentiment	Reviewers praise Notion's docs, wikis, and improving AI, while a vocal minority cite complexity and eventually leave.	Sentiment is split: privacy-minded fans praise the lightweight local-first design, while others complain it feels raw and unstable.¹⁵
Biggest gotcha	Prompt-injection flaws let Notion AI leak data, reportedly before users approve the action.^⁷	Open-source license is not MIT despite marketing framing; verify terms before commercial use

Pick Notion when

Docs-heavy teams
Startups running ops in one workspace
Wiki and knowledge-base owners
Teams automating busywork with AI agents

When Notion is not a fit

Anyone who just needs a simple shared list or spreadsheet
Privacy-first teams uneasy running work data through cloud AI
Offline-first workers . Notion needs a connection
People unwilling to invest hours learning a complex tool

Pick AFFiNE when

Privacy-focused solo note-takers
Docs + whiteboard hybrid workflows
Self-hosters wanting open source
Budget-conscious 1-3 person teams

When AFFiNE is not a fit

Teams handling sensitive data . RCE CVE, ignored XSS reports
Groups larger than 3 people on the free plan
Buyers who need true MIT licensing
Anyone needing a polished, stable daily-driver tool

Sources

Notion Reviews on G2 (13,836 reviews)g2.com
review
Notion review (2026): brilliant for docs and wikis, frustrating beyondeesel.ai
review
Notion Review - PCMagpcmag.com
review
Notion: Notes, Tasks, AI - Google Playplay.google.com
review
Notion Pricing Plansnotion.com
official
Notion Trust Center - SOC 2 Type II, ISO 27001trust.notion.com
official
Notion AI: Data Exfiltration - PromptArmorpromptarmor.com
security
CVE-2026-25020 - NVDnvd.nist.gov
security
Is Notion secure? Key risks - Polymerpolymerhq.io
security
Notion rides AI boom to $500M annual revenue - CNBCcnbc.com
news
Why I ditched Notion after 5 years - Redditreddit.com
review
AFFiNE Pricing 2026: Free, Pro, Team Plansaffine.pro
official
AFFiNE . Open-Source Knowledge Base Softwareaffine.pro
official
AFFiNE Free Plan: 10 GB, 3 Members, 3 Devices (2026)freealternatives.to
review
AFFiNE Reviews (2026)producthunt.com
review
I built a second brain with AFFiNExda-developers.com
review