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Construction DX · Made in Japan

Drawings, inspection, safety — on one iPad

Three apps by YSL Solution (Japan), built with Kajima, Toda, Takenaka and Nishimatsu. Not a tool that “can”, but one “the whole site can use”.

  • Works offline
  • No setup fee
  • AWS infrastructure
Drawings, inspection, safety — on one iPad
~16.700jobsites / month
~160.000user accounts
~950corporate contracts
17countries incl. Vietnam
Figures published by YSL Solution (Apr 2025).
Challenges

Familiar jobsite bottlenecks

📄

Building from old drawings

Unsure which is latest → rework.

✍️

Manual notes

Handwritten, retyped at night.

⏱️

Slow instructions

Found in the morning, received in the afternoon.

📷

Uncontrolled photos

Thousands of chat photos, no location.

🗂️

Inspection paperwork

Forms and albums done by hand.

🚗

Wasted trips

Back to the office for drawings.

Products

Three apps for three jobs

Each app has just 4 core features — anyone can use it after one session.

CheX
CheX
Drawings & construction

View, mark up, share, export drawings & photos

  • Latest drawings for everyone, even offline
  • Pin photos & notes on the drawing
  • Create forms & albums on site
LAXSY
LAXSY
Inspection & punch list

Enter, manage, share, export punch items

  • Log a defect in 2 taps
  • Pin colors show status
  • Auto-split by subcontractor
AQuick
AQuick
Safety & quality

Instant instructions on safety patrols

  • Send on the spot with photo & 30s voice
  • Red / yellow / green at a glance
  • Auto Excel/CSV reports
Results

Numbers from real projects

GC A · LAXSY
2 h → 5 min

Preparing punch lists for subcontractors.

Sub B · LAXSY
3 → 1 person

No printing or manual compiling — ≈ ₫1.4B saved.

Sub C · CheX
-50%

Measurement work halved by digitizing end-to-end.

Hochiki · CheX
-20~30%

Overtime on one project.

Sub D · CheX
No scaffolding

360° photo checks reduce accident risk.

GC C · AQuick
0 missed

Safety patrols via status-colored pins.

Pricing

Per project, per month

Server storage + per-user ID fee. No setup fee.

ProductServer / monthID / user / month
CheX5GB — 865.000 ₫519.000 ₫ → 260.000 ₫ (volume discount)
LAXSY1GB — 173.000 ₫1.730.000 ₫ (1–10 ID) · 1.211.000 ₫ (11+ ID)
AQuick1GB — 173.000 ₫104.000 ₫

VND prices at 173 ₫/¥ (08/2026), excl. VAT. Bundle all 3: AQuick free.

Onboarding

From first call to daily use

Survey

Discuss your site, pick what to digitize first.

Demo

Demo on your own project drawings.

Setup

Projects, permissions, drawings & masters.

Train & run

Training for managers, supervisors, subs.

FAQ

FAQ

Does it work without internet?

Yes. Pre-downloaded drawings work offline; sync when online.

Is Vietnamese supported?

LAXSY has Vietnamese; CheX JA/EN/ZH; AQuick JA/EN. Docs & support in Vietnamese.

How many devices per ID?

1 ID = 1 person, unlimited devices.

Minimum term?

From 1 month; scale storage and IDs anytime.

Contact

A demo on your own drawings

We reply within 1 business day to schedule a session.