Eraser
Pumble
| Feature | Eraser | Pumble |
|---|---|---|
| Pricing | Free / from $10/mo | Free / from $2.49/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.5 / 5 | 4.3 / 5 |
| Best For | engineering-teams, solution-architects, technical-documentation, system-design | small-teams, startups, budget-conscious-teams, remote-teams |
| Founded | 2022 | 2020 |
| Diagrams As Code | ✓ | ✗ |
| Ai Diagrams | ✓ | ✗ |
| Whiteboarding | ✓ | ✗ |
| Documentation | ✓ | ✗ |
| Version History | ✓ | ✗ |
| Templates | ✓ | ✗ |
| Collaboration | ✓ | ✗ |
| Channels | ✗ | ✓ |
| Direct Messages | ✗ | ✓ |
| Video Calls | ✗ | ✓ |
| Screen Sharing | ✗ | ✓ |
| File Sharing | ✗ | ✓ |
| Threads | ✗ | ✓ |
✓ Eraser Pros
- AI-generated diagrams from text descriptions
- Code-first diagrams with version control
- Combines docs and diagrams in one canvas
- Purpose-built for technical architecture docs
✗ Eraser Cons
- Limited general-purpose whiteboarding features
- Smaller template library than Miro/Lucidchart
- Not suited for non-technical teams
✓ Pumble Pros
- Unlimited message history on free plan
- Very affordable paid plans
- Familiar Slack-like interface
- Good video calling
✗ Pumble Cons
- Smaller integration ecosystem
- Less mature than Slack
- Limited automation features
The Verdict
Eraser is built for engineering teams and solution architects, with a focus on diagrams-as-code and ai-diagrams. Pumble targets small teams and startups and leads with channels and direct-messages.
On pricing, Pumble is the clear winner for budget-conscious users — starting at $2.49/mo compared to $10/mo for Eraser. That $7.51/mo difference adds up quickly for growing teams.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Feature-wise, Eraser offers broader built-in capabilities (7 features vs 6), while Pumble takes a more focused approach — which can mean a simpler, faster onboarding experience.
This is a genuinely close comparison. If you can, sign up for both free trials (where available) and run a one-week test with your actual team tasks before deciding.