A lightweight alternative to Addo Sign
Addo Sign is a capable, established Danish e-signing product with a broad feature set. But breadth has a cost: more to configure, more to learn, more to pay attention to. If your team mainly needs one thing done well - eIDAS-compliant signing with MitID at a transparent flat price - a lighter tool may fit better. That is Kaddye.
Why teams pick Kaddye
- Nothing to configure. Sign up, upload a PDF, send. From sign-up to signed document in about three minutes - no setup project, no training.
- Two prices, nothing hidden. 30 kr. per case file with no subscription, or 130 kr./month unlimited. Every signing method (SES and AES) included on both - no credits to manage, no method surcharges.
- MitID and MitID Erhverv. Danish signers verify identity with their national eID, producing an advanced electronic signature that is uniquely linked to them and tamper-evident.
- EU-only data residency. Documents and metadata stored exclusively in Amsterdam and Frankfurt, with a full audit trail on every case file and evidence exportable forever.
When Addo Sign is the better choice
- You need pre-built integrations with the systems your business already runs on.
- You need identity methods beyond MitID for AES signing across multiple countries.
- You have complex, multi-step approval workflows that a larger platform models out of the box.
Same eIDAS rules, same legal effect
An advanced electronic signature is defined by eIDAS - not by the logo on the platform. Kaddye AES documents are sealed with a qualified certificate from a trust service provider on the EU Trusted Lists using PAdES with PAdES-LTA archive timestamps, keeping them verifiable for years. More detail in SES vs AES: what’s the difference?
Frequently asked questions
Is Kaddye legally equivalent to Addo Sign?
Yes. eIDAS defines what makes an electronic signature valid - the requirements apply to the signature itself, not the vendor. Kaddye AES documents are created with MitID verification, sealed with a qualified certificate from a trust service provider on the EU Trusted Lists using PAdES, and the seal is verifiable by anyone against those lists.
What does switching cost?
Nothing up front. There is no onboarding fee and no commitment: pay 30 kr. per case file as you go, or 130 kr./month for unlimited case files. Documents already signed elsewhere remain valid - signed PDFs carry their signatures and timestamps inside the file.
How is pricing structured compared to credit-based models?
Kaddye has two plans, both with every signing method included: Pay as you go (buy case files from 30 kr. when you need them, volume discounts available) and Pro (130 kr./month, unlimited case files). There are no signature-method surcharges and nothing expires.
Which signing methods does Kaddye support?
Advanced electronic signatures (AES) with MitID and MitID Erhverv, and simple electronic signatures (SES) where signers draw, type, or upload a signature - useful for signers without Danish eID, anywhere in the world.
Send your first document today
No commitment, no sales call: get started and pay as you go from 30 kr. Weighing other options too? See our honest comparisons with Penneo and DocuSign.