Section 1 of 6

The Verdict

Our pick: Activepieces. Activepieces wins our comparison by taking four of the five categories. Its combination of a generous free plan, unlimited tasks on paid plans, a vast and extensible integration library, and the option for self-hosting gives it a decisive edge for teams that need power and scalability.

Relay.app is a strong contender and wins handily on Ease of Use. It's an excellent choice for teams whose primary need is automating workflows that require human approval steps and who prioritize a simple, guided user experience over a vast feature set.

Section 2 of 6

Pricing Comparison

Winner: Activepieces — Activepieces offers a more generous free tier and unlimited tasks on paid plans.

Activepieces More Affordable

$15/mo

Platform Fee, then usage-based

Activepieces uses a unique pricing model. The Pro plan starts with a $15/mo platform fee which includes 10,000 tasks. After that, you pay per 1,000 tasks, making it highly scalable and predictable.

Relay.app

$19/mo

Billed Annually

Relay.app's pricing is based on a combination of monthly steps and AI credits. Its entry-level paid plan is affordable but comes with usage limits that can be hit quickly.

Plan Activepieces Relay.app
Free 1,000 tasks/month, 2 active flows, 200 AI credits. 200 steps/month, 500 AI credits, 1 user.
Pro / Plus $25/month: Unlimited tasks, 10+ flows, 500+ AI credits. $19/month (annual): 750 steps/month, 5,000 AI credits, 1 user.
Team / Business $150/month: Unlimited tasks, 50+ flows, 1,000+ AI credits, 5+ users, SSO, Audit Logs. $69/month (annual): 2,000 steps/month, 5,000 AI credits, 10 users, Shared Workflows.
Usage Metric Tasks & Active Flows Steps & AI Credits
Bottom line: Activepieces wins on affordability. Its free tier is more generous for high-volume task execution, and its paid plans offer unlimited tasks, which provides more predictable and scalable pricing compared to Relay.app's metered steps.
Section 3 of 6

Feature Comparison

Winner: Activepieces — Activepieces offers more integrations, advanced logic, and developer-focused features.
Feature Activepieces Relay.app
Integrations (Pieces) 640+ and growing, open-source community contributions. 100+ focused on business apps like Gmail, Notion, HubSpot.
AI Capabilities Native AI pieces, AI agents, AI co-pilot in builder. Built-in AI actions (summarize, extract), supports GPT, Claude, Gemini.
Human-in-the-Loop Supported via approval steps. Core feature with dedicated approval, review, and data entry steps.
Advanced Logic Supports branching, loops, and auto-retries. Supports conditional paths and branch merging.
Custom Code Yes, allows custom Javascript (NPM packages) within flows. No, focuses on a no-code experience.
Developer Extensibility High. Open-source framework (TypeScript) to build custom integrations ('Pieces'). Low. Connects to external tools via Webhooks and HTTP requests.

Activepieces has a clear advantage in raw features and integrations. Its library of over 640 connectors, called "Pieces," dwarfs Relay.app's 100+ integrations. Because Activepieces is open-source, its community constantly adds new integrations, creating a rapidly growing ecosystem. Furthermore, its support for advanced logic like loops and the ability to inject custom Javascript code make it a more powerful and flexible tool for complex workflows.

Relay.app's feature set is more focused. Its standout capability is its deep implementation of "human-in-the-loop" automation. While Activepieces supports approval steps, Relay.app builds entire workflows around human checkpoints, allowing users to review AI output, approve actions, or manually enter data mid-flow. This makes it exceptionally well-suited for processes that can't be fully automated, such as approving payments or reviewing AI-generated emails before they are sent.

Section 4 of 6

Ease of Use

Winner: Relay.app — Relay.app's focused UI and guided experience make it easier for beginners.

Activepieces

  • Visual drag-and-drop builder that is powerful but can have a learning curve.
  • Offers flexibility that may be overwhelming for simple use cases.
  • Troubleshooting is aided by detailed logs at the step level.
  • Appeals to both non-technical and technical users.

Relay.app Easier to Use

  • Exceptionally intuitive and clean user interface.
  • Guided experience, including the ability to describe a workflow in plain language to get started.
  • Minimal learning curve, ideal for beginners and non-technical teams.
  • Focus on human-in-the-loop makes setting up approval workflows straightforward.

Relay.app is the clear winner for ease of use. Its interface is consistently praised for being clean, intuitive, and easy to learn, even for users with no prior automation experience. The platform's core strength is simplifying the process of building workflows, particularly those involving human approvals. Users can even describe their desired automation in plain English, and Relay.app will generate a starting workflow, significantly lowering the barrier to entry.

Activepieces also features a user-friendly visual builder, but its greater power and flexibility introduce more complexity. While it's designed to be accessible to non-technical users, the sheer number of options, including advanced logic and custom code, means there is a steeper learning curve compared to Relay.app. It strikes a balance between simplicity and capability, but Relay.app's focused design makes it the more approachable tool out of the box.

Section 5 of 6

Reliability & Ecosystem

Winner: Activepieces — Activepieces' open-source nature and self-hosting option give it a major edge.
Category Activepieces Relay.app
Support Options Community support for free plans, dedicated support for Enterprise. Email support with a 24-48 hour response time, priority support for Enterprise.
Compliance SOC 2 Type II compliant. SOC 2 compliant.
Self-Hosting Yes, core platform is open-source (MIT License). No, cloud-only.
API Access Yes, on Business plans and above. Yes, for advanced configuration.
Ecosystem Model Open ecosystem, community-contributed integrations on npm. Closed ecosystem, integrations are built and maintained by Relay.app.

Activepieces wins decisively in both reliability and ecosystem, primarily due to its open-source foundation. The ability to self-host provides organizations with complete control over their data, security, and uptime, a critical feature for those with strict compliance or data residency requirements. This option is not available with Relay.app. Furthermore, being SOC 2 Type II compliant gives Activepieces a slight edge in verified security practices.

The ecosystem surrounding Activepieces is also more robust. Its open-source nature fosters a vibrant community that actively contributes to the platform by building and sharing new integrations. This leads to a larger, more diverse, and rapidly expanding library of connectors. Relay.app, as a closed-source platform, manages its own integrations, resulting in a smaller, more curated, but less extensive selection.

Section 6 of 6

Who Should Pick What

Choose Activepieces if...

  • You need to connect with a wide variety of apps, especially niche ones.
  • You require advanced workflow logic like loops or custom code.
  • Self-hosting for data control and security is a priority.
  • You want a scalable, predictable pricing model with unlimited tasks.

Choose Relay.app if...

  • Your primary need is automating workflows with human approval steps.
  • You prioritize ease of use and a minimal learning curve above all else.
  • Your team is non-technical and needs a simple, guided experience.
  • Your automation needs are focused on mainstream business applications.

Also consider: If you need the largest possible library of integrations and have simple, linear workflows, Zapier remains a dominant player. For those who want the visual building experience of Activepieces but with a different pricing model, Make.com is a strong alternative.

Our recommendation: start with Activepieces

Activepieces offers a powerful free tier and the flexibility to scale from simple no-code workflows to complex, developer-enhanced automations. Its open-source nature and self-hosting capabilities provide unmatched control and value.

Both platforms offer free tiers to test their core functionality.