Congressio vs Symposio
Congressio
congressio.netSymposio
symposio.frSide by side
| Figure | Congressio | Symposio |
|---|---|---|
| Price from | $40.83/mo | — |
| Free plan | Yes | — |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | — |
| Plans published | 6 | 3 |
| Spec score · Event Abstract Management Software | 9.0 (#3) | 6.5 (#29) |
| Payments | Congressio supports tiered ticket sales through Stripe, with discount codes, add-ons, VAT invoices and refunds. | The Standard plan lists PayPal, Systempay or bank transfer as payment methods. |
| Peer review | Organizers can auto-assign reviewers, enforce deadlines and use conflict-of-interest detection. | The peer review system supports multiple evaluation levels, reviewer assignments, automatic scoring and ranking, and acceptance or rejection notifications. |
| Purpose | Congressio brings conference submissions, peer review, decisions, scheduling and attendee registration into one platform. | Symposio is an all-in-one solution for organisers of scientific conferences and symposia, with tools for registrations, abstract submissions and programme scheduling. |
| Support | The contact page says support normally replies within one business day and prioritizes urgent requests during live events. | Support varies by plan: Standard technical support, personalised technical support with Premium, and priority technical support with Custom. |
Plans
Congressio
- FreeFree
- Standard$49 a month
- Professional$149 a month
- Standard$490 a year
- Professional$1,490 a year
- EnterprisePriced on request
Symposio
- StandardPriced on request
- PremiumPriced on request
- CustomPriced on request
In their own words
Congressio
Congressio brings conference submissions, peer review, decisions, scheduling, and attendee registration into one platform. Its drag-and-drop form builder supports conditional logic, uploads, and co-author invitations, while review tools include automatic reviewer assignment, deadlines, conflict-of-interest detection, and double-blind review. Organizers can publish a public program with attendee agendas and iCal or PDF exports. Ticket sales through Stripe support tiers, discounts, add-ons, VAT invoices, and refunds. QR passes can be stored in Apple and Google Wallet and scanned at check-in, with zones controlled by ticket tier or capacity. Virtual-event tools include live and on-demand streaming, recordings, e-posters, Q&A, and polls. Congressio also describes ORCID, institutional single sign-on, API keys, and webhooks for integrations. It says data is kept in the European Union and card details are handled by Stripe. The free plan allows one active event, 100 submissions, and three team seats. Standard costs $49 a month; a 14-day trial is listed.