ToolStack

Slack vs FullStory

Side-by-side comparison · Updated 2026-03-30

Our VerdictSlack wins overall

By G2 score and review volume, Slack has the edge. 33,000 reviews at 4.5/5 puts it ahead of FullStory (4.5/5). That said, the right pick depends on your methodology and team size.

Choose Slack if…

Choose Slack if your team focuses on team communication and cross functional collaboration and fits a startup, scaleup profile. Starting at $8.75/user/mo/user/mo with a free tier. De facto standard for workplace communication — most PMs will use Slack daily, and it appears constantly in job descriptions

Choose FullStory if…

Choose FullStory if your team focuses on session replay and user behavior analysis and fits a startup, scaleup profile. Free tier available. Best-in-class autocapture technology — captures every click, scroll, and interaction without manual event tagging, enabling retroactive analysis on historical data

Slack
by Salesforce
4.5
out of 5 · 33k+ G2 reviews
Visit Slack ↗
FullStory
by FullStory
4.5
out of 5 · 900 G2 reviews
Visit FullStory ↗

Feature Comparison

FeatureSlackFullStory
Category
team_chat
session_replay
G2 Score
4.5 / 5.0
4.5 / 5.0
G2 Reviews
33000
900
Free Tier
Starting Price
$8.75/user/mo
—
Mobile App
AI Features
API Access
SSO / SAML
SOC 2
Learning Curve
easy
moderate
Platforms
web, mac, windows, linux, ios, android
web

Pros & Cons

Slack

Pros
✓ De facto standard for workplace communication — most PMs will use Slack daily, and it appears constantly in job descriptions
✓ 2,600+ app integrations make it the central nervous system of the product team's tool stack, pulling notifications from Jira, GitHub, Figma, and more into one place
✓ Channels, threads, and Slack Connect enable structured communication across teams, departments, and even external partners/vendors
✓ Workflow Builder allows no-code automations for standups, approvals, triage, and request intake — reducing context switching for PMs
Cons
✗ Information overload — high-volume workspaces create notification fatigue and make it easy to miss critical messages buried in busy channels
✗ Free tier's 90-day message history limit means teams lose access to older conversations, decisions, and context unless they upgrade
✗ Slack AI is a paid add-on on top of already per-seat pricing, making it expensive for larger organizations to adopt AI features

FullStory

Pros
✓ Best-in-class autocapture technology — captures every click, scroll, and interaction without manual event tagging, enabling retroactive analysis on historical data
✓ Frustration signals (rage clicks, dead clicks, error clicks) surface UX problems automatically, saving PMs hours of manual session review
✓ Powerful search and segmentation — find specific user sessions by any combination of events, user properties, or frustration signals in seconds
✓ Strong privacy-by-design approach with automatic PII masking, excluded elements, and HIPAA-compliant configurations for regulated industries
Cons
✗ No transparent public pricing — Business and Enterprise plans require contacting sales, making budgeting difficult for smaller teams
✗ Session-based pricing can become very expensive at scale, especially for high-traffic consumer products with millions of monthly sessions
✗ Data retention on lower tiers is limited — teams may lose access to historical sessions unless on Enterprise plans

Frequently Asked Questions

It depends on your needs. Slack scores 4.5/5 on G2, while FullStory scores 4.5/5. Slack is better for team_communication and cross_functional_collaboration, while FullStory excels at session_replay and user_behavior_analysis.
Slack starts at $8.75/user/mo per user/month with a free tier. FullStory starts at N/A per user/month with a free tier.
Slack supports 2,600 integrations, while FullStory supports 70.
Full Slack Review →Full FullStory Review →
Data verified 2026-03-30. Some links may be affiliate links — see disclosure.