That's for the cloud offer, but you can also download Odoo.
We are mostly open source (https://github.com/odoo/odoo) but have an open core business model for on premise installations with a bit more features in Odoo Enterprise.
The offer is explained here: https://odoo.com/pricing (although I am not sure this page is clear; we are still thinking about how to improve it)
From there it looks like one needs to pay a base cost of €20,- / month / user before selecting apps. Then, the calculator doesn’t make me have the first app for free. What’s more, I can’t select accounting (€20,- / month) without also selecting invoicing (€10,- / month). So if I’d want an install with only accounting, instead of it being for free, it looks like it costs at least €50/month?
No, it's really free. Since the first user.
> Also, since the apps have different prices, will it be > the cheapest or the most expensive app that comes for free?
You always start with one app, this one is free and also it dependencies. So, whatever you start with, it's free. (e.g. you get accounting+invoicing for free)
But if you want one app more (e.g. inventory), then you have to pay for all apps / users. It's not "one app free", it's a "free for one app" plan.
But if you want expense management as well, you will have to pay for everything. (use vendor bills which are in accounting app, instead of expenses, so that you stay in the free plan)
Thanks, for the feedback, we really need to improve the pricing page...
Also, since the apps have different prices, will it be the cheapest or the most expensive app that comes for free? The former seems the most logical but it could lead to some unintended consequences. Like, I could be mainly interested in accounting (with its dependent invoicing module, the two of them together costing €30/month). I could get this for free. Say I‘d be interested in adding the expenses module as an upsell. After all, it’s only €10/month. And it has no dependencies. But if the cheapest modules is for free, the €10 upsell would actually cost me €30/month, and would be much less attractive.
- full API: https://www.odoo.com/documentation/9.0/api_integration.html - direct integration with 24.000 banks for statements - for non supported banks, has it supports bank formats, including cmat.053 in germany - automate payments with SEPA (in Europe, or checks in U.S.) - automate invoicing and follow-ups of payment by email or regular mail (docsaway integration) - it supports Germany (SKR04)
It's 100% free, unlimited users on the cloud: https://www.odoo.com/page/accounting
Odoo Community is open source: it includes most accounting features but not the payments and bank interfaces.
disclaimer: I am the founder of Odoo