# 4n6 Tools Pro — Pocket forensic calculators > Pocket forensic calculators (iPhone/iPad app by Jan Sikuta.) - Source: https://appshunter.io/ios/app/4n6-tools-pro/id6785259219 (this page in markdown: same URL + `.md`) - Developer: [Jan Sikuta](https://appshunter.io/developer/6782549504) - Category: Medical, Education - Price: $99.99 - Age rating: 12+ - Requires: iOS 17.0 · 13 MB - Languages: English, Slovak - Released: 2026-07-04 - Data updated: 2026-10-11 ## What is 4n6 Tools Pro? 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 • Slovak and English 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. ## Is 4n6 Tools Pro safe? Not enough ratings yet to assess 4n6 Tools Pro. ## Is 4n6 Tools Pro legit? 4n6 Tools Pro has limited verification signals. The AppsHunter Legitimacy Score for 4n6 Tools Pro is 55 out of 100 points across 7 verification signals from App Store and developer data. ## Version history (last 5 releases) ### 5.2 — 2026-09-30 A complete redesign — new interface and an in-depth revision of the methods against the primary literature. • Method revision: Henssge 95 % intervals by cooling phase, Mallach time windows for post-mortem changes (Henssge & Madea 2004), rigor re-establishment up to 20 h, the Glaister equation for comparison • Entomology: species-specific developmental threshold (Lucilia, Calliphora, Protophormia), thermal sum for L. sericata, custom ADD for other species • Ethanol: Widmark balance with resorption deficit, individualised r after Seidl, blood : breath ratio with the physiological mean, blood-from-vitreous estimate after Jones & Holmgren • PAL: 67 substances with updated reference levels (Schulz 2020; Molina & Hargrove 2018) — new: pregabalin, buprenorphine, lithium, methanol, ethylene glycol, cyanide and more • PAL: post-mortem femoral blood reference values (median, 90th and 97.5th percentile from 122,000 autopsies, Ketola & Ojanperä 2019) shown next to the clinical ranges • Odontology and anthropology: Kvaal, Prince & Ubelaker and Suchey-Brooks per the originals, tibia measurement guidance, Traub index alongside glucose alone • DVI per the INTERPOL DVI Guide 2023; bloodstains and burns with corrected thresholds • Case backup and restore: all cases and reports into a single file (Files, iCloud Drive, AirDrop) and back on another device • Text size can follow the system (Dynamic Type); localised system dialogs Also since version 4.1: • New tools: Burns (Lund–Browder, Baux), CO-Hb with vitality assessment, DVI, and Case & Report with a shared export • Blood-alcohol curve with an uncertainty band, time of sobriety and breath conversion • Post-mortem changes: corneal clouding, the late post-mortem period with Casper's rule, a graphic timeline • Desmin IHC aligned with the published methodology • LiDAR measurement in Fotograme3ka and weight estimation • The report is recalculated when switching SK/EN — the export is always single-language • Light, dark and system appearance; a selectable app icon • Links to littlEye AI and aPrehliadky ### 4.1 — 2026-08-07 Added and improved features Updated Age Ratings Responses about Social Media ### 4.0 — 2026-07-22 ## Version 4.0 Enhancements: * Improved PMI:** Enhanced post-mortem interval estimation at crime/death scenes (with on-site calculation) and during autopsies. * Calculation of blood ethanol concentration from consumed alcohol, timing, alcoholemic curves, and recalculations (bilance and back calculations). * New Tiles:** Introduced colorimetry, weight (volumetric), counting and quantification, and LittleEye AI (training) tiles. * Photogrammetry & LiDAR:** Fixed and improved photogrammetry, with LiDAR integration in the Pro version. * Advanced Alcohol Calculations:** Enhanced expert-mode alcohol calculations. * Expanded Databases:** Added drug, medication, and PAL databases, along with substance concentration conversion. * Forensika.eu collaboration:** Prepared for collaboration with forensika.eu. ### 3.0 — 2026-07-16 - significant update enhances photogrammetry, odontology, and immunohistochemistry (including ischemic changes with structural protein desmin) - fixes addresses language translation issues ### 1.0.1 — 2026-07-04 No release notes. ## More apps by Jan Sikuta - [Breathune](https://appshunter.io/ios/app/breathune/id6782549502) - [4n6 Tools Lite](https://appshunter.io/ios/app/4n6-tools-lite/id6783425913) - [Mosquiter](https://appshunter.io/ios/app/mosquiter/id6786154086) - [Lite Breathune](https://appshunter.io/ios/app/lite-breathune/id6786838686) - [Colorime3ka](https://appshunter.io/ios/app/colorime3ka/id6793206733) All apps by Jan Sikuta: https://appshunter.io/developer/6782549504 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-11.*