Mobile app pros and opportunities: - Integration into phone calendar, contacts, etc. - Integration into share/intent features offered by platform - Offline c

Mobile app pros and opportunities: - Integration into phone calendar, contacts, etc. - Integration into share/intent features offered by platform - Offline capability - Homescreen presence Website pros and opportunities: - Public linkability, shareability of events, schedules, homepage (... in all likelihood you have a conference website anyway) - No need to develop for different platforms - No need for user to download an app The drawbacks are implies by contrasting with the other.