Before comparingWhat each one asks of you before it's any use
Romi runs on a subscription: a seven-day free trial, with no charge and cancelable before it ends, then €4.99 a month or €39.99 a year, that's €3.33 a month. There's no permanent free plan, and the subscription requires an account.
Popotam is free with no strings attached and has no sign-up at all: a meal plan opens with a secret link that acts as a key, and the email address is optional. The trade-off needs saying: lose that link without having left an address, and you lose your meal plan.
A word on what we know, and what we don't. Romi's public site is an app rendered in the browser, and its presentation pages come down to one sentence: “Romi prépare tes repas de la semaine et ta liste de courses selon ton budget et tes préférences” (Romi preps your weekly meals and your grocery list based on your budget and preferences). Its pricing and privacy policy, on the other hand, are precise, and that's where everything stated here comes from. The rest, like sorting the list by aisle, diets or the number of people, isn't announced anywhere: so the table below shows it as “not verified” rather than assuming.
One last difference, about the publisher, because you can read it in both privacy policies. Romi is published by a company based in the Ajman Free Zone, in the United Arab Emirates, and announces its database in the European Union (Supabase). Popotam is published in France and hosted by Scaleway, in France.