For window manufacturers who still measure by hand
Replace the clipboard.
Keep the craft.
The mobile measurement app for joinery shops that outgrew Excel but can't justify €15,000 for Klaes. Built by a Lithuanian software studio. Now in private beta.
● 147 surveyors on the list · Early-bird €99/mo · locked for life
— 02 / Market The market reality
12.94M
Window units manufactured in Germany in 2025.
Src · VFF Marktstudie
5,880
Window-construction businesses in Germany still without proper mobile software.
Src · IBISWorld DE-23612
2025·02·13
The day iwindoor — the only free mobile measurement app — was removed from Google Play.
Src · Google Play Store archive
— 03 / Problem What you're choosing between
Three bad options, every single survey.
A five-to-fifteen-person shop measuring windows in 2026 is stuck picking the least-worst tool. None of them were built for the van.
The dead app.
iwindoor is gone from Google Play. Your team is relying on a 2018 APK from a sideload site, praying the next Android update doesn't kill it.
The enterprise tax.
Klaes, LogiKal and SchüCal start at €10,000+ and run on a Windows desktop. They don't even ship a real mobile app for the person holding the tape.
The clipboard cost.
A single re-make from a measurement typo costs £200–£800. Most shops re-make 3–8% of orders. That's the real price of paper.
— 04 / Product What Frametap does
Six things, done properly. Nothing else.
The goal isn't to replace your ERP. It's to replace the moment in the van where someone types numbers off a paper sketch into a spreadsheet and nobody catches the typo.
Designer in your pocket
Sketch any window: mullions, transoms, sliding panels, French doors, arched heads. Touch-first — the same fluency a draughtsman gets with a pencil, on a phone, in the rain.
One photo per window
The production team sees the brick reveal, the lintel, the existing trickle vent — exactly what the measurer saw. Photos attach to the measurement, not to an email someone forgot to forward.
Survey report PDF
Branded, signed, time-stamped. Sent to the office before you leave the site. No more "did you send me the measurements yet?" texts at 7 p.m.
Works offline. Always.
Measure in basements, attics, half-built construction sites. No bars, no problem. Everything syncs the moment you're back on Wi-Fi.
PVC, wood, aluminium
Material-aware fields: the right thermal break for aluminium, the right glazing bead for timber, the right reinforcement spec for PVC. Not the iwindoor compromise of "everything is white PVC."
GDPR-compliant cloud
Frankfurt data centre. No US transfer, no third-party sub-processors that can't survive a Schrems II audit. Your customer data and their addresses don't leave the EU.
— 05 / Compliance Regulations baked in, not bolted on
Built for the audit that's already coming.
EU CPR 2024/3110
Declaration of Performance & Conformity — in force from January 2026.
EPBD 2024/1275
EPBD recast — member-state GWP and U-value reporting from 2028.
UK FHS 2025
UK Future Homes Standard — real-world per-window U-value compliance.
Your customers will need to prove embodied carbon and U-value compliance from 2026. Spreadsheets won't survive the audit — Frametap is being built with these regulations as constraints, not afterthoughts.
— 06 / Comparison Where Frametap sits
Cheaper than enterprise. Better than free.
A direct comparison against the three things a five-to-fifteen-person shop is actually choosing between today.
| Frametap | iwindoor (delisted) | Klaes / LogiKal | Excel + clipboard | |
|---|---|---|---|---|
| Price / month | €99/mo | Free · abandoned | €10k+ up-front | — / your time |
| Mobile-first | Native iOS & Android | Android only · old APK | Windows desktop | Paper + retype |
| Cloud sync | EU · GDPR | Local only | Add-on module | |
| Per-window photos | Camera roll, lost | |||
| PVC + wood + aluminium | PVC only | |||
| Active development | Weekly | Abandoned | Annual major | |
| Multi-language | EN · DE · PL · LT | EN only | — | |
| Setup time | 4 minutes | 15 min | 2-day on-site | 0 / forever |
— 07 / Team Who's building this
Frametap is being built by djump.io — a Klaipėda-based software studio. We started after six months of fenestration market research: reverse-engineering the iwindoor APK, mapping the EU CPR 2024/3110 compliance roadmap, and interviewing window manufacturers across the UK, Germany and Poland.
Before Frametap we shipped the iwindoor-replacement measurement app for Decoline LTD, a UK PVC manufacturer — its most-requested feature, in production, on real sites. Frametap is that experience, rebuilt for every shop that never had a developer of their own.
— 08 / Waitlist Get the early-bird price
Be one of our first ten pilot factories.
Tell us the bare minimum and you're on the list. The optional fields help us prioritise which language and which material to ship first.
— 09 / FAQ For the record
Frametap is the mobile-first replacement for iwindoor, which was removed from Google Play in February 2025. It runs natively on iOS and Android, works offline, supports PVC, wood and aluminium, and syncs to a GDPR-compliant EU cloud — for €99/month instead of the €10,000+ desktop enterprise CAD packages.
Frametap starts at €99/month, locked for life for early-bird waitlist members. That's roughly 10–50× cheaper than Klaes, LogiKal or SchüCal, which start around €10,000 up-front and run only on Windows desktops.
The fastest path is a touch-first mobile app the surveyor uses on site: sketch each window, attach a photo, capture the material and glazing spec, then send a signed survey PDF to the office before leaving. Frametap is built specifically for this workflow, offline-first, so nothing is retyped off a paper sketch.
Frametap is in private beta now. Join the waitlist and we'll send an invite plus your locked-in early-bird price. Ten pilot factories get Pro free, for life.