Updated August 23, 2026
"Debate app" covers at least four different products: party games, argument-mapping tools, civic consultation platforms, and daily debate apps. They serve different people at different moments. Here is the map.
| App | What it is | Who for | Platform |
|---|---|---|---|
| Period. | One question a day put to the whole world: blind vote, debate, then a numbered verdict with gaps by country, gender and age. | Anyone who wants a daily ritual and wants to see where their opinion sits. | iOS, Android |
| Kialo | Argument mapping: pros and cons organised into a tree, every branch open to discussion. | Teachers, students, anyone breaking down complex reasoning. | Web |
| Cap Collectif | Participation and structured debate platform, with expert face-offs and a moderated framework. | Institutions, local governments, organisations running a consultation. | Web |
| Debatium | Party game: hundreds of debate prompts, several game modes, for two players or more. | A group in the same room, at a party. | Mobile |
| OpinionGame | Party game mixing debates, truth or dare, questions and challenges. | A group in the same room, at a party. | iOS |
| Apol | Debate against AI characters that push back on whatever topic you bring. | Anyone practising argumentation alone. | Mobile |
If you want a daily ritual rather than a tool, if you want to know what the world actually thinks about a specific question — not just the five people at your party — and if you want to see the gaps between countries, genders and generations, that is what Period. does and the others do not.
Period. is a debate and opinion app. It is unrelated to menstrual cycle tracking apps, which share a similar name.
Get Period.