The field app that turns a smartphone photo into admissible legal evidence. Qualified eIDAS timestamping, tamper-proof geolocation, bailiff certificate in under 90 seconds - used every day by CEE installers, site managers, property managers and insurance experts.
CEE obligated & delegated parties Certified Bailiffs eIDAS · RFC 3161 CEE authorized representatives GDPR · Hosted in France CEE obligated & delegated parties Certified Bailiffs eIDAS · RFC 3161 CEE authorized representatives GDPR · Hosted in France CEE obligated & delegated parties Certified Bailiffs eIDAS · RFC 3161 CEE authorized representatives GDPR · Hosted in France CEE obligated & delegated parties Certified Bailiffs eIDAS · RFC 3161 CEE authorized representatives GDPR · Hosted in France CEE obligated & delegated parties Certified Bailiffs eIDAS · RFC 3161 CEE authorized representatives GDPR · Hosted in France CEE obligated & delegated parties Certified Bailiffs eIDAS · RFC 3161 CEE authorized representatives GDPR · Hosted in France
Industries
Four field trades. One single app.
ConstApp adapts capture, forms and certificates to the precise requirements of each sector. Where a generic tool leaves you improvising, ours gets you compliant on the first try.
With 25 years of applied cryptography experience within the Fidealis group, ConstApp is your certified evidence. Every record passes through four technical layers before being deemed probative - qualified eIDAS timestamping, SHA-256 hashing, anti-spoofing geolocation, blockchain anchoring. Every layer is evidentiary.
Qualified RFC 3161 timestamp token compliant with the eIDAS standard, obtained via a qualified trust service provider. Compliant with EU Regulation No. 910/2014, articles 41 and 42.
SHA-256 hash + RSA signature
256-bit cryptographic fingerprint. Changing even a single bit verifiably breaks the seal.
Anti-spoofing geolocation
GPS + Wi-Fi + cell-tower triangulation. Any inconsistency between sources triggers an alert. Accuracy of ±2 to 5 m in urban areas.
How it works
From photo to locked file, in 90 seconds.
Available on iOS & Android. One field action, four automatic guarantees. No training required.
CEE subsidy, rental deposit, insurance claim, construction dispute: the outcome of every file depends on the quality of your evidence. With a timestamped, geolocated ConstApp record, you secure every file from the very first photo - for the price of a single record.
CEE subsidy secured
Geolocated, timestamped photo: your file passes review on the first try.
Enforceable inspection report
A timestamped, signed inspection report with proof of precedence: your record stands as evidence.
Claim under control
Timestamped at the source: the date and origin of the claim are reliably established.
Winning construction dispute
Admissible evidence: your site records carry full weight before the court.
An interface stripped down to the essentials. Templates pre-configured for your sector. Capture in three taps. Built for the field, from basements to rooftops in full sun. Available on iOS and Android, for phones and tablets.
iOS 15+ Android 9+ AES-256 encrypted Anti-spoof GPS Hosted in France
Water damage · kitchenParis 15th · 04/22/2026 · 08:31
⏳ Under review
ConstApp Service
Remote Visual Inspection (RVI)
When an on-site visit isn't necessary, remote visual inspection lets you conduct a visual review over secure video call. The beneficiary or policyholder films the installation live: every capture is qualified-eIDAS timestamped and geolocated, for evidence with the same probative value as an on-site record.
✓ Guided video call, no app installation required for the client
Certificate generatedSame probative value as an on-site visit
2001
The Fidealis ecosystem
Twenty-five years of making the case
ConstApp is the culmination of 25 years of digital evidence within the Fidealis group, the French pioneer of digital evidence since 2001. Seven brands, one sovereign infrastructure, close to 2 million sealed records. Reliability is built over time, year after year.
Qualified eIDAS timestamping
Qualified electronic timestamping compliant with the eIDAS standard and RFC 3161, obtained via a qualified trust service provider, guaranteeing an enforceable, certain date.
Triple certification
Qualified timestamping + RSA-PSS 4096 signature + blockchain anchoring. Three independent layers so your evidence outlives us, even if we were to disappear.
International recognition
Fidealis evidence presented internationally, built on the Fidealis ecosystem since 2001, recognized for its technical reliability.
Installers, site managers, property managers: they use ConstApp every day to secure their files. Just real numbers and concrete results.
★★★★★
"Before ConstApp, I was losing subsidy files over non-compliant photos. Now my files pass review and the app pays for itself fast. That's it."
JM
Jean-Michel B.Certified installer
★★★★★
"We use it on every site. Snag-list sign-off now takes minutes instead of hours, and our records hold up in disputes."
SG
Stéphane G.Site manager
★★★★★
"Not a single move-out dispute before a judge since we switched to ConstApp. Tenants see the bailiff certificate and sign without argument. Essential for rental management."
MP
Marie P.Property manager
Three building blocks · one single platform
In the field. At the office. Under your brand.
ConstApp comes together in three interlocking pieces: the mobile app for your field staff, the simple dashboard for your managers, and the white-label infrastructure for your partners. Each usable on its own. All three connected in real time.
01 · Mobile app
One app per trade, ready to use.
Templates pre-configured by sector. Three taps are enough to produce an evidentiary record. Anti-spoof GPS, joint signature. Your teams pick it up in under 90 seconds.
iOS & Android - phone + tablet
4 trade templates CEE / Construction / Real estate / Claims
AES-256 encryption - secure capture
3 taps per enforceable record
02 · Online management
A dashboard so simple you forget it's there.
Three clicks to see your team's activity, filter by file, export for the authorized representative. No training, no consulting firm, no half-day onboarding. Your managers master it in 5 minutes.
Real-time view by team, sector, status
Anomaly alerts quality & compliance
Exports CSV, ZIP, API transmission
Roles & permissions granular
03 · White label
Your logo, your URL, our engine.
For CEE delegated bodies, installer network leaders, multi-office property management firms, insurance companies, multi-site mid-caps: deploy ConstApp under your own brand, your own style guide, connected to your information system. Our evidentiary infrastructure, your visible identity.
A CEE delegated body aggregating 200 installers, a property group managing 5,000 units across six offices, an insurer looking to equip its network of field experts: ConstApp deploys white-label across your organization. Your app on the stores, your dashboard on your subdomain, your business workflows, our cryptographic engine running underneath. Many networks already operate this way.
iOS & Android app under your brand - published on the app stores
White-label management dashboard - dedicated subdomain, full style guide, custom business roles
REST API + signed webhooks connected to your CRM, ERP, document management or business platform, with support from our team
Volume-based per-file pricing from €4.50 excl. tax, quoted based on volume
Uptime commitments contractually defined in the service agreement
The evidentiary infrastructure, your visible identity.
Networks already run ConstApp white-label. CEE delegated bodies, property groups, mutual insurers, multi-site mid-caps - all benefit from the same qualified eIDAS timestamping, under their own brand, with their own URL.
App stores
Apple App Store, Google Play - your choice.
Dedicated subdomain
app.yournetwork.com - your full style guide.
Signed REST API
OpenAPI 3.1, signed webhooks, SDKs in 4 languages.
Contractual uptime
Service commitments defined in the contract.
CEE delegated bodies Property groups Mutual insurers Construction network leaders
FAQ
Frequently asked questions
Every ConstApp record is timestamped with qualified eIDAS technology, via a qualified trust service provider, and registered in real time with a partner bailiff practice. It constitutes evidence with strong probative value: an enforceable certain date, guaranteed integrity, and a presumption of reliability under the eIDAS regulation (EU No. 910/2014). Your records are admissible before French and European courts.
Yes - it's actually the core of the product for the energy retrofit sector. ConstApp records comply with the requirements of standardized operation sheets BAR-TH-101, BAR-EN-102, BAR-TH-137, BAR-TH-143, BAR-TH-148. The combination of timestamping and geolocation constitutes admissible evidence for after-the-fact audits. Our records are already accepted by the market's leading authorized representatives and delegated bodies.
ConstApp is billed per file, with no monthly subscription: Basic €5.20, Installer €4.50, Partner €4.20, Delegated €3.00 per file (excl. tax), depending on profile and volume. One-time activation fee of €49 excl. tax, optional photo packs. Full details on the Pricing page.
No. ConstApp works on a per-file basis, with no monthly subscription: a one-time activation fee of €49 excl. tax, then each file billed at your profile's rate. You only pay for what you use.
Three methods, independent of us. (1) Download the technical PDF certificate: it contains the SHA-256 hash and the RFC 3161 token; the openssl ts -verify command is enough. (2) Recompute the SHA-256 hash of the original file with any tool and compare. (3) Check the blockchain anchor via the public explorer. None of these checks queries us: your evidence remains valid even if we were to shut down tomorrow.
Yes, strictly. ISO 27001 data centers at OVHcloud Roubaix and Outscale Paris. Replication, backup and disaster recovery all remain on French territory. Fully European or self-hosted stack, outside the scope of the US Cloud Act (AWS, Azure, GCP), including for ancillary components (transactional emails, monitoring, logs). GDPR, ISO 27001 and NF Z42-013 compliant.
Yes. ConstApp integrates via native connectors (Zapier, Make, n8n and 1,800+ connectors) and a complete OpenAPI 3.1 REST API, with signed webhooks and official JavaScript / Python / PHP / Java SDKs. Compatible with the CEE business CRMs FastCRM, Pixel and Qhare, with Salesforce, HubSpot, Odoo, SAP, Guidewire, Solera, with the Monday.com API, and more broadly with any private or proprietary CRM able to consume a REST API or a webhook. For specific needs, our Customer Success team puts you in touch with your software vendor or a partner integrator.
