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Notes from the systems we run
How we build and ship the products under Solutions, written by the team that builds them. Real features, real trade-offs, no filler.
11 Sept 2026 · 3 min read
MamaPapa is live on iOS and Android
MamaPapa is now available on both iOS and Android, with the App Store release completing the rollout on May 20, 2026. Here's how getting to both platforms actually went.
11 Sept 2026 · 3 min read
How MamaPapa's AI storybooks actually got built
MamaPapa's AI-illustrated storybook feature generated its first story on March 29, 2026, turning a family's own photos into a personalized children's story. Here's how the pipeline behind it works.
11 Sept 2026 · 3 min read
Adventures: choose-your-own-path storybooks starring your own family
MamaPapa's Adventures, branching storybooks with a family's own people cast as characters, launched August 29, 2026. The story tree is hand-authored; the illustrations aren't.
11 Sept 2026 · 3 min read
DreamShots: AI image generation without betting the feature on one vendor
MamaPapa's DreamShots feature is built on a swappable generation backend, curated presets instead of open prompts, and automated anatomy checks before anything reaches a user.
9 Sept 2026 · 3 min read
Integrating five brokers behind one interface
Kyngly talks to Alpaca, Coinbase, Trading 212, Interactive Brokers, and EODHD through a single internal contract, so adding a broker means writing one adapter.
5 Sept 2026 · 2 min read
Letting grandparents contribute photos without their own paid plan
In MamaPapa, storage for a shared album is billed to whoever owns the album, not whoever uploads to it, so family can contribute without needing to pay.
27 Aug 2026 · 3 min read
When one signature needs to cover several documents at once
Signedy reworked deliveries into multi-document envelopes signed as a single legal transaction, a change significant enough to break its own API.
18 Aug 2026 · 3 min read
Letting families download everything, without melting the server
MamaPapa's full photo export streams a ZIP of original-quality files directly to the user instead of buffering it all in memory, with rate limits that protect the system without punishing the user.
5 Aug 2026 · 3 min read
Freezing a quote the moment it's accepted
When a customer accepts a Welkent quote, the exact content they saw is frozen as tamper-evident, append-only evidence, so it can never silently change afterward.
30 Jul 2026 · 3 min read
From a photographed receipt to an accurate VAT return
Welkent computes a business's momsangivelse from real recorded purchase VAT instead of an estimate, starting from a photo of the receipt.
18 Jul 2026 · 3 min read
Automating the part of running a trade business nobody enjoys
Welkent's rykkerflows chase unpaid invoices on a fixed schedule, with four safety rules that matter more than the reminders themselves.
3 Jul 2026 · 3 min read
Billing per delivery, enforced in exactly one place
Signedy runs on a prepaid token model, and every path that can send a delivery goes through the same enforcement point rather than duplicating billing checks.
25 Jun 2026 · 3 min read
Flows: what happens after a document gets signed
Signedy's Flows engine turns 'send it, then remember to follow up' into an automatic pipeline of SFTP, webhook, and email steps.
12 Jun 2026 · 3 min read
One subscription, three payment platforms
How MamaPapa unified Stripe, Apple, and Google billing behind a single subscription model, and why switching providers has to actively cancel the old one.
1 Jun 2026 · 2 min read
Why MitID signing is off by default
Welkent's MitID e-signing is staff-gated rather than available to every account by default, enforced in both the UI and the API.
22 May 2026 · 3 min read
Generating the API client instead of hand-writing it
Paytical generates its type-safe frontend API client directly from the backend's contract, so the two can never quietly drift apart.
5 May 2026 · 3 min read
Making a React app visible to bots that don't run JavaScript
MamaPapa's marketing pages are a client-rendered React app, which most AI crawlers can't see into. Prerendering closes that gap.
20 Apr 2026 · 2 min read
Mapping thousands of plants to the rooms they actually live in
FloraFever's plant catalog and floor-plan feature ties care reminders to where a plant actually sits in a home, not just which species it is.
2 Apr 2026 · 3 min read
Proving who signed, without storing a CPR number
Signedy verifies signer identity through MitID without ever storing the underlying CPR number, keeping a verified token instead.
12 Mar 2026 · 2 min read
Why plant identification runs on two different systems
FloraFever splits plant identification into a purpose-built botanical model for species ID and a self-hosted general model for everything else, instead of asking one system to do both.
18 Feb 2026 · 3 min read
One platform, thirteen trades: Welkent's module marketplace
Instead of building a separate tool per trade, Welkent ships a shared platform with trade-specific modules a company can turn on, plus a free-form quote builder for everything else.
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