Stack AI vs Zapier vs Activepieces vs Relay.app

Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.

Your tool
Stack AI
vs
Competitor 1
Zapier
Competitor 2
Activepieces
Competitor 3
Relay.app
Compare
4 tools · best value per row highlighted
Your tool Stack AI
stack-ai.com
Connect AI models visually
Remove
Competitor Zapier
zapier.com
Connect your apps without writing code
Make main Remove
Competitor Activepieces
activepieces.com
Make main Remove
Competitor Relay.app
relay.app
Relay.app is a platform to create AI Agents that work for you across Gmail, Notion, Salesforce, HubSpot, and 100+ other apps. Agents created in Relay.app are *actually* useful, as they're easy to cre
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
6.3Kvisits/mo
5.3Mvisits/mo
221.7Kvisits/mo
158.1Kvisits/mo
MoM change
▼ 57.9%
▼ 5.9%
▲ 1.8%
▼ 32.7%
6-month growth
-93.7%
-26.7%
-10.0%
-30.9%
Global rank web
#1,700,092
#6,051
#174,361
#182,862
Avg. last 3 months
13.9K
5.5M
226.6K
187.1K
Bounce rate lower is better
39%
38%
39%
38%
Pages / visit
1.8
10.2
3.8
2.8
Visit duration
14s
6m 43s
2m 39s
1m 15s
Traffic sources
—
● Direct 81% · ● Referral 12%
● Direct 74% · ● Referral 24%
● Direct 93% · ● Referral 4%
Stack AIZapierActivepiecesRelay.app
01.8M3.6M5.5M7.3MStack AI · 143.4KStack AI · 153.7KStack AI · 167.9KStack AI · 160KStack AI · 99.4KStack AI · 35.9KStack AI · 17.4KStack AI · 20.6KStack AI · 14.9KStack AI · 6.3KZapier · 6.3MZapier · 5.9MZapier · 6.8MZapier · 6.5MZapier · 7.3MZapier · 6.6MZapier · 6MZapier · 5.5MZapier · 5.7MZapier · 5.3MActivepieces · 209.7KActivepieces · 239.2KActivepieces · 236KActivepieces · 187.9KActivepieces · 246.2KActivepieces · 223.6KActivepieces · 218.4KActivepieces · 240.1KActivepieces · 217.9KActivepieces · 221.7KRelay.app · 216.8KRelay.app · 241.7KRelay.app · 272KRelay.app · 229.9KRelay.app · 228.8KRelay.app · 251.1KRelay.app · 193.9KRelay.app · 168.4KRelay.app · 234.9KRelay.app · 158.1K1K10K100K1M10MStack AI · 143.4KStack AI · 153.7KStack AI · 167.9KStack AI · 160KStack AI · 99.4KStack AI · 35.9KStack AI · 17.4KStack AI · 20.6KStack AI · 14.9KStack AI · 6.3KZapier · 6.3MZapier · 5.9MZapier · 6.8MZapier · 6.5MZapier · 7.3MZapier · 6.6MZapier · 6MZapier · 5.5MZapier · 5.7MZapier · 5.3MActivepieces · 209.7KActivepieces · 239.2KActivepieces · 236KActivepieces · 187.9KActivepieces · 246.2KActivepieces · 223.6KActivepieces · 218.4KActivepieces · 240.1KActivepieces · 217.9KActivepieces · 221.7KRelay.app · 216.8KRelay.app · 241.7KRelay.app · 272KRelay.app · 229.9KRelay.app · 228.8KRelay.app · 251.1KRelay.app · 193.9KRelay.app · 168.4KRelay.app · 234.9KRelay.app · 158.1KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
Freemium
Freemium
Starting price
Free tier
$19.99per month · free tier available
$20per month · free tier available
$19per month · free tier available
Free tier
Free trial
–
–
API access
–
–
–
Plans
—
Free FreeProfessional $19.99/moTeam $69/moEnterprise Custom
Free FreePlus $20/moTeam $200/mo
—
Capabilities input → output
Input
DataDocumentsText
Text
Text
Text
Output
Apps
Apps
Apps
Apps
Skill level
Intermediate
Intermediate
Intermediate
Advanced
Categories
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Productivity & OfficeAI AgentAI Workflow
Productivity & OfficeAI AgentAI Workflow
Tasks what each tool can do · 2 shared · core   partial
Tasks covered
3
6
4
3
Workflows
Agents
No-code
–
Agent creation
–
–
Lead generation
–
–
–
Lead management
–
–
–
Productivity
–
–
–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 1
▲ 0
▲ 0
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
0
0
0
Verified listing
–
–
–
–

Traffic figures are third-party estimates for the tool's own domain; tools sharing a domain with a bigger product are not counted. Pricing is captured from each tool's site and may lag.