The EU billing alternative to Assembly and Copilot
Run your productized agency on branded client portals and subscription plans, and bill through your own Moneybird, Mollie or Stripe account. iDEAL, Bancontact and VAT invoicing are built in.
No card required · Bills through your own Mollie or Moneybird
Assembly (the all-in-one client portal formerly known as Copilot) is a polished platform for client-facing businesses: branded portals, a built-in CRM, contracts, invoicing and messaging. Doorst.app covers the productized-agency core, branded portals, recurring plans and a delivery board, with one decisive difference: you choose the billing rails. Assembly collects through Stripe, Square or PayPal. Doorst.app lets you bill through your own Moneybird administration, Mollie or Stripe account, so invoices land in your books with VAT handled and iDEAL and Bancontact built in. If your bookkeeping lives in Moneybird and your clients pay with iDEAL, Doorst.app is built for you.
Doorst.app and Assembly, honestly compared
| Capability | Doorst.app | Assembly |
|---|---|---|
| Branded client portals | ||
| Subscription and recurring plans | ||
| Delivery board (Kanban) per client | Via apps | |
| Bills through your own Moneybird administration | ||
| Choose your billing provider | Moneybird, Mollie or Stripe | Stripe, Square or PayPal |
| iDEAL and Bancontact | Native | Via Stripe |
| Automatic SEPA collection | Coming soon | Via Stripe |
| VAT-ready EU invoicing | Stripe tax | |
| Contract e-signature | ||
| Built-in CRM and contacts | ||
| Starting price | From 15 euro per month | From 39 dollar per month |
The difference is where the money goes
Native Moneybird bookkeeping
Doorst.app creates and sends invoices straight from your own Moneybird administration. Assembly has no Moneybird integration, so its payments live in Stripe, Square or PayPal and your bookkeeping stays a separate job.
Booked, not just collected
With Moneybird, every payment is booked into your accounting the moment a client pays. Assembly collects through Stripe, Square or PayPal and leaves the bookkeeping to you, so you still export and reconcile into your accounts at month end.
European by default
iDEAL, Bancontact and VAT-friendly invoicing are the defaults, not methods you configure inside a US-first payment processor. Every invoice goes out of your own administration with a payment link on it.
Where Assembly might fit you better
No tool wins on everything. Here is where Assembly is ahead today, so you can choose with eyes open.
- Assembly ships built-in contract e-signature as a core portal pillar. Doorst.app focuses on billing and delivery and does not ship e-signature today.
- Assembly includes a built-in CRM with a contacts database and pipeline. Doorst.app keeps client records lighter and focused on delivery and billing.
- Assembly carries SOC 2 Type II on every plan and offers a HIPAA-compliant tier. Doorst.app is younger and does not offer those certifications yet.
- Assembly is a mature all-in-one with an app and embed ecosystem. Doorst.app is younger, more focused and leads on native EU billing.
Frequently asked questions
Yes. Both run client work on a branded portal with subscription plans and invoicing. The difference is billing. Doorst.app charges through your own Moneybird administration, Mollie or Stripe account, so invoices land in your books with VAT handled, on the provider you choose.
The Copilot client portal rebranded to Assembly and now lives at assembly.com. If you are comparing Copilot and Assembly, they are the same product under a new name.
Assembly collects payments through Stripe, Square or PayPal and leaves your bookkeeping separate. Doorst.app lets you pick the provider: your own Moneybird administration, Mollie or Stripe account. The payment is booked into your accounting the moment a client pays, with iDEAL, Bancontact and VAT invoicing built in.
Assembly processes payments through Stripe, Square or PayPal, so European methods like iDEAL and SEPA depend on your Stripe setup rather than being native to the tool. Doorst.app has iDEAL and Bancontact built in through Mollie and Moneybird, so your clients pay the way they already do. Automatic SEPA collection is on our roadmap, not shipped today.
Assembly ships built-in contract e-signature, a CRM and SOC 2 Type II on every plan today. Doorst.app is younger and leads on native EU billing. If native Moneybird invoicing and iDEAL matter most, Doorst.app is the better fit.
Bill the European way this week
Spin up your workspace, connect Moneybird or Mollie and invite your first client. Free to try.