| Price from | $15/mo | $199/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 5 | 4 |
| Spec score · Survey And Form Builders | 8.5 (#11) | 8.2 (#15) |
| API | REST API access is included in the listed Free, Starter, Pro, and Business plans. | Ona provides a REST-based API with no stated call limit, but reserves the right to temporarily rate limit unusually high usage. |
| Integrations | The integration directory lists Airtable, HubSpot, Notion, Stripe, Google Sheets, Salesforce, Slack, and other app connections. | Ona Apps support Google Sheets, RapidPro, TextIt, Tableau, and Tableau Hyper; Ona says they are included with select paid plans. |
| Product | Fillout is a platform for creating forms, surveys and quizzes, including forms used in internal and external business workflows. | Ona Data is a mobile data collection platform for field data collection and real-time monitoring. |
| Security | Fillout says it is SOC II compliant and encrypts data in transit with TLS 1.2 and at rest with AES, with daily encrypted backups. | Ona's security page says server-client connections use TLS/HTTPS and databases and backups are encrypted at rest using AES-256. |
| Support | The site advertises 24/5 support, and the Enterprise plan includes dedicated support. | Ona says its multilingual support team spans 14 time zones and offers premium options for guaranteed one-day or weekend support. |
