4n6 Tools Pro
27 forensic medicine tools
$99.99 · Designed for iPad. Not verified for macOS.
27 forensic medicine tools: time of death, toxicology, identification, DVI. Now in 7 languages. Entirely on device, offline, no subscription.
4n6 Tools Pro is a suite of professional calculators and tools for forensic
medicine, intended for forensic pathologists, medical examiners, experts and
medical students.
TIME OF DEATH AND THANATOLOGY
• Henssge nomogram — PMI from rectal temperature, separate equations for cool
and warm environments, a corrective-factor assistant, direct date and time of
death
• Post-mortem changes — livor, rigor by muscle group, corneal clouding, the
late post-mortem period with Casper's rule; a graphic timeline of the windows
with their intersection
• Vitreous potassium — four published methods plus hypoxanthine as an
independent check
• Forensic entomology — developmental stages with illustrations, the ADD
method, thermal summation from daily temperatures with microclimate correction
TOXICOLOGY
• Ethanol — interpretation of concentrations, Widmark, back-calculation to the
time of the event, a blood-alcohol curve with an uncertainty band, time of
sobriety, breath conversion
• Drug reference — 67 substances with therapeutic, toxic and lethal ranges, plus post-mortem femoral blood percentiles from 122,000 autopsies
• CO-Hb — carboxyhaemoglobin interpretation and assessment of vitality in fire
TRAUMA AND CARDIAC PATHOLOGY
• Burns — TBSA per Lund and Browder, the Baux score and its revision
• BSA and predicted heart weight; age estimation from aortic circumferences
IDENTIFICATION AND ANTHROPOLOGY
• DVI — structured per the INTERPOL DVI Guide, primary and secondary
identifiers, identification categories
• Odontology — dental chart, AM/PM comparison, six age-estimation methods
• Blood groups and stains — AB0/Rh inheritance, angle of impact, presumptive
tests
• Stature from long bones, sex and age of the skeleton, foetal age from the
femur, BMI, volumetric weight estimate
MICROSCOPY AND IMAGE ANALYSIS
• Counting of cells and structures with semi-automatic detection
• Desmin IHC — CPA quantification following a published methodology
• Colorimeter — objective colour naming with grey-card calibration
• Fotograme3ka — lengths, angles and areas from a photograph; native
distance measurement on LiDAR-equipped devices
• littlEye AI — the author's stand-alone app for AI assessment of histology
slides (27 organs, an atlas of 100+ diagnoses, on-device model training):
https://apps.apple.com/app/littleye-ai/id6799417580
BUILT FOR EXPERT PRACTICE
• Every result carries a range or a caveat; an impossible input returns an
explanation, not a number
• Source citations with every method
• Case and report — enter the case data once; the tools hand their results to
a shared export
• Seven languages — Slovak, English, Czech, German, Italian, French and Ukrainian — including recalculated results; adjustable text size including Dynamic Type,
light, dark and system appearance
• All calculations run on the device; the app requires no internet connection
and transmits no data
ABOUT THE PRICE
The price is not arbitrary. The app is built for the examining physician and the forensic expert, and its content is extensive: 27 tools, 67 substances with reference levels, methods revised against the primary literature and cited with every result. After VAT and the App Store commission, roughly 57 % of each purchase reaches the developer - a single forensic physician who builds, maintains and updates the app in his own time. One-time purchase: no subscription, no ads, no data collection.
The app is a professional aid. Values are orientational and do not replace
medical judgement; the final assessment belongs to a qualified expert.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• New languages: Czech, German, Italian, French and Ukrainian — the whole interface, results and the case report. On first launch the app follows the phone language; it can be changed at any time with the language button in the header or in Settings.
• The LiDAR measuring screen now follows the selected app language.
• Minor fixes and refinements.
The developer, Jan Sikuta, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Jan Sikuta
- Size
- 14.9 MB
- Category
- Medical
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
English and 6 more
- English, Czech, French, German, Italian, Slovak, Ukrainian
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
- Copyright
- © Ján Šikuta, 2026
