Otus gives you two ways to measure each site. Cookieless mode stores nothing in your visitors' browsers, so in most EU countries you don't need a cookie banner for analytics. Full tracking mode adds returning visitors and attribution across visits for everyone who says yes to cookies, and keeps counting everyone who doesn't.
Recognise visitors who come back, so you can see retention and loyalty over time.
Follow the path from a first visit to a sign-up or purchase days later, and credit the campaign that started it.
Anyone who declines is counted anonymously, the same way as in cookieless mode. Rather not? Only load Otus after a yes.
Full tracking mode only stores a first-party cookie and a visitor ID in the browser after a visitor says yes, and only on your own domain. No third-party cookies and no tracking across sites. This mode needs a consent banner. Otus doesn't include one, but works with any consent banner that supports Google Consent Mode.
The choice mostly comes down to one question: do you need to recognise visitors who come back, or follow them across visits to a sale? If you do, choose full tracking. If not, cookieless mode gives you everything else without a cookie banner.
| Feature | Cookieless | Full tracking |
|---|---|---|
| Stored in the browser | Nothing | A first-party cookie and a visitor ID, after a yes |
| Cookie banner for analytics | Not needed in most EU countries | Needed |
| Visitors counted | Everyone | Everyone; those who say no are counted anonymously |
| Returning visitors | No | Yes, for visitors who said yes |
| Attribution across visits | Within one visit | Across visits, for visitors who said yes |
| Conversion forwarding | Within the same visit | Within each ad platform's conversion window |
Add Otus to your site in under five minutes and get your first weekly summary within a week.