Side by side
Bool vs REI3
Both stand on no-code app builders. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APIiPhoneLinux+1
Choose Bool if you want to create and publish web apps from prompts, with built-in data storage, hosting, collaboration, and access controls. Paid plans include private projects and custom domains from $20/mo. Look elsewhere if you need a mobile app.
Visit Bool Free plan AndroidAPIiPhone+4
REI3 combines application building, deployment choices, integrations, and access controls in one platform. Its free offering provides a starting point, while Professional tiers add a concurrent-user licensing model and defined support response time.
Visit REI3The facts
| Bool | REI3 | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | No | Not published |
| Runs on | API, iPhone, Linux, Web | Android, API, iPhone, Linux, Self-hosted, Web, Windows |
| Lowest paid plan | Plus: $20 a month | REI3 Professional: €3.50 per user a month |
| Plans published | 5 | 7 |
| Maker | Not published | REI3 |
| Website | bool.com | rei3.de |
| On no-code app builders | #33 of 177 | #37 of 177 |
Bool: what it does well
- Build web apps from plain-language prompts with a live preview.
- Apps include a database, file storage, sign-in, and hosting.
- Invite collaborators and restore saved checkpoints.
- Choose link, workplace, or named-person access for published apps.
- Connect Linear, Notion, GitHub, and other tools to the chat agent.
What to know first
- Free workspaces have a five-credit rolling 24-hour limit.
- Free plan allows up to five deployed Bools and five bool.so subdomains.
- Mobile apps are not available.
- Prompts and relevant project context are sent to third-party AI providers.
REI3: what it does well
- Graphical Builder defines data, interfaces, and access
- Supports on-premise and cloud hosting
- Includes workflows, schedulers, and notifications
- Offers encryption and multi-factor authentication
- Free plan has no user limit
What to know first
- Built on web technologies rather than native applications
- Free support is best-effort contact-form support
- Professional licensing uses concurrent users