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. On the App Store and Google Play.
● Free tier, no card · Works offline · Your data stays in the EU
— 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
EU data centre in Paris. 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 | Free tier · Pro €29/mo | Free · abandoned | €10k+ up-front | — / your time |
| Mobile-first | Android + iOS | 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 / Download Available now
Measure your next window with the phone in your pocket.
Frametap is on the App Store and Google Play today. Install it, sketch a window on site and send the survey PDF before you get back in the van.
Free tier, no card · Pro is €29/month or €290/year for the whole shop, with 14 days free to try it
— 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 Android and iOS, works offline, supports PVC, wood and aluminium, and syncs to a GDPR-compliant EU cloud. It has a free tier, and Pro is €29 a month per shop, against the €10,000+ desktop enterprise CAD packages.
Frametap has a free tier that needs no card, and Pro at €29 per month or €290 per year — per shop, not per surveyor, with 14 days free to try it. That is roughly 30–100× 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.
Now. Frametap is live on the App Store and on Google Play. The free tier needs no card, and every new shop gets 14 days of Pro.