🏗️ Trades · Crack experts

The crack expertise report software for building experts and forensic surveyors

Onatys Doc is the app that turns your tablet or smartphone into a crack expertise writing tool. Dedicated templates for natural-disaster drought claims, clay shrinkage-swelling, amicable and judicial expertise. Annotated photos directly on-site, voice dictation, evolution tracking of cracks, mapping on plans — for conclusions that hold up against insurance, in court and with clients.

Drought & clay-swelling templates ready
Annotated photos & on-site dictation
Compliant amicable & judicial expertise
Your daily challenges

We understand the rigor your trade demands

Crack expertise allows no approximation. Onatys Doc was built to give you the documentary precision your principals expect.

Measurements to retake 6 months later

Comparing today a crack measured 6 months ago across 3 photos taken from different angles: impossible. Onatys Doc ties measurements, photos and reference points to each visit, for an unambiguous evolution tracking.

Photos without context

A crack photo without a reference, scale or location on the plan has no probative value. Our editor lets you annotate each shot directly: ruler, arrows, markers, and pin them to the building plan.

Reports that take 4 hours

Synthesizing 60 photos, 20 measurements and 3 visits into a contradictory report takes evenings. With a structured template that fills in during the visit, the report is ready as you leave — and stays consistent across expertises.

Conclusions to defend

Against the insurance company, in a contradictory expertise meeting or in court, your conclusions must rest on traceable, time-stamped evidence. Onatys Doc records every action, every photo, every measurement, with geolocation and time.

The ready-to-use template

A crack expertise template designed with field experts

A framework structured by sections, compliant with amicable and judicial expertise practices. You adapt it to your branding and methodology, and create variants per typology (drought, ground movement, water damage…).

Sections included in the template

  • Identification of property, client and intervening parties
  • Building specifications (year, structure, foundations, soil)
  • Crack mapping on plan or aerial photo
  • Detailed measurements: width, length, depth, orientation
  • Characterization: structural / superficial, active / passive
  • Overall photos, zoomed photos with ruler and markers
  • Hypotheses on origin (drought, claim, ageing…)
  • Evolution diagnostic with installed monitors and gauges
  • Costed recommendations and remediation plan
  • Conclusion, signatures and visit history
Concrete benefits

Why crack experts choose Onatys Doc

Tracked millimetric precision

Capture width, length, depth of each crack, with a photo of the measurement attached. The history is preserved visit after visit, exportable to a synthesis table.

Annotated photo for expertise reports

Touch annotation directly on the photo: scale ruler, arrows, measurement markers, circled zones, comments. Each shot becomes self-supporting evidence, readable by an insurer, a judge or the client. Indispensable for a professional crack expertise report.

On-site voice dictation

Dictate your observations out loud during the visit, the text transcribes into the right section of the expertise report. No more going back to the office to write up: on-site dictation cuts crack expertise report production time by 3.

Drought & clay-swelling templates

Templates dedicated to drought-rehydration natural-disaster claims and clay shrinkage-swelling: clay zoning, period covered by the disaster decree, oriented crack photos, motivated conclusion for the insurance company.

Mapping on plans

Pin each crack directly on the building plan or a façade photo. The client instantly visualizes the extent of the disorder, your conclusions become self-evident.

Chronological evolution tracking

A crack measured at T0, T+3 months, T+6 months: the evolution shows as a graph. Ideal for concluding on the active or stabilized nature of a disorder, or to demonstrate post-drought reactivation.

Geolocation & timestamping

Each photo, each measurement is timestamped to the second and geolocated. Your reports stand up to any challenge on the date or location of the observation — a decisive asset for the forensic building expert.

Amicable & judicial compliance

Mandatory mentions (parties, statements, contradictory, motivated conclusion) built into the template. Your reports comply with insurance company standards and professional forensic surveyor practices.

Use cases

6 pre-formatted report types

The base template covers the main services of crack experts, from one-off diagnostic to multi-year evolution tracking.

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Pre-purchase expertise

For buyer, agency or notary: diagnostic of cracks before signing, hypotheses on origin, cost estimate of repairs and impact on property value.

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Drought disaster claim report

Template dedicated to drought-rehydration natural-disaster claims and clay shrinkage-swelling: period covered by the disaster decree, clay zoning, oriented crack photos, motivated conclusion for the insurance company — the most rigorous drought template on the market.

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Forensic building expertise

Mission ordered by a judge or requested by counsel: framework respecting procedural rules, parties' statements, contradictory, court-defensible conclusion. The forensic building expert software that secures your reports.

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Multi-visit evolution tracking

Installation of monitors and gauges, readings at T0, T+3, T+6, T+12 months. Automatic evolution graph, conclusion on the active or stabilized nature of the disorder — useful to demonstrate post-drought reactivation in clay-swelling claims.

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Post-claim structural diagnostic

Settlement, slippage, earthquake, impact: characterization of the damage, structural risk assessment, safety and repair recommendations.

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Co-property audit

Status of cracks on common areas, global mapping, prioritized and costed action plan, report presentable to the general assembly.

Frequently asked questions

Software and templates for crack expertise reports

Everything building experts and forensic surveyors ask before choosing their tool.

Onatys Doc is the crack expertise report software designed for building experts, forensic surveyors and diagnostic firms. It offers structured templates (drought claims, clay shrinkage-swelling, amicable and judicial expertise), lets you take and annotate photos on-site, dictate your observations out loud, and export the final report as PDF or Word — from your smartphone, tablet or computer.
Yes. Onatys Doc provides several pre-built templates designed by experienced building experts: drought claim template, clay shrinkage-swelling template, amicable insurance expertise template, judicial expertise template, evolution tracking template. Each template is duplicable, editable and adaptable to your branding.
Such a report must prove the link between observed disorders and the drought-rehydration period recognized by the natural-disaster decree. With Onatys Doc, start from the dedicated template: it includes clay zoning identification, the relevant disaster period reminder, fields for measurements (width, length, depth), placeholder slots for oriented crack photos, and a motivated conclusion section addressed to the insurance company.
Clay shrinkage-swelling refers to the dimensional variation of clay soils based on water content: they shrink during drought and swell in wet periods. This creates differential movements that crack buildings on these soils. It is the leading cause of natural-disaster claims in France. Onatys Doc includes a dedicated crack expertise template aligned with insurance company expectations, with clay zoning reminder and oriented photos.
Yes. Onatys Doc offers on-site voice dictation: dictate your observations out loud during the visit, the text transcribes into the right section of the report. A major time saver for experts running multiple visits — the report is almost finished as you leave the site, no more evening typing at the office.
Absolutely. The forensic expertise template includes mandatory mentions (parties, mission, parties' statements, contradictory principle, motivated conclusion), aligned with civil court practice and forensic surveyor associations. Each photo is timestamped to the second and geolocated, with cryptographic fingerprint of the original file — your reports stand up to any court challenge.
Onatys Doc lets you annotate a photo directly on the touchscreen: place a scale ruler, add arrows, circle a zone, write a comment, indicate a measurement. The annotated photo is attached to its section, timestamped and geolocated. It is the key element of a crack expertise report: an annotated photo speaks louder than any text in front of an insurer or a judge.

Are you a crack expert?

Join the beta program now and get early access to the crack expertise template (drought claims, clay shrinkage-swelling, judicial expertise), plus personalized support to adapt it to your methodology. 3 free months of the Pro plan at official launch.

Request the cracks template Talk to the team