Comparison

PsoriasisCalc vs DermLite

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

PsoriasisCalc

Features
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Psoriasis Calc is a practical and complete tool for any doctor who deals with psoriasis patients (dermatologists, rheumatologists, general practitioners, etc.). Psoriasis Calc: · Facilitates the use of severity scales in psoriasis. · It takes advantage of the simplicity and the speed provided by smartphones to allow the user to introduce the needed data. · Provides information to the physician to determine the existing comorbilities in psoriatic patients. Texts are presented in both, English and Spanish. This application includes the following calculators: * BSA: The percentage of skin surface affected by psoriasis. The calculation is performed for each affected part of the body, by direct estimation or using the rule of the palm (1 patient palm, including palm and fingers represents 1% of his/her body surface). * PASI: This is a classic scale assessment of the severity of psoriasis developed in 1978. Its values range from 0 to 72. The severity calculation is performed separately: the head including neck, trunk, the upper limbs and lower limbs including the buttocks. It includes the automatic calculation of PASI 50, PASI 75 and PASI 90, useful to define the treatment end point and efficacy. * NAPSI: The signs of psoriasis disease in the nail bed and/or nail matrix are easily registered in a four quadrant scheme of each nail. PsoriasisCalc calculates the NAPSI index. * COMORBIDITIES: This functionality is designed to facilitate the detection of the most common comorbidities of patients with psoriasis. It is based on the study performed by the Spanish Group for the Study of Psoriasis which, after conducting an exhaustive synthesis of the literature so far, proposed a practical decisión algorithm. It will be to the discretion of the physician the interpretation of the conclusions provided by PsoriasisCalc, based on each particular patient clinical context. No allusion is made to drug treatments, which are the sole decision of the practitioner in charge.

About

DermLite

This app transforms your iPhone into a professional dermoscopy camera for documenting and monitoring skin lesions. It allows for precise lesion mapping, side-by-side image comparison, and secure storage of medical images, ensuring reliable follow-ups.

Highlights
  • Capture dermoscopic and clinical images
  • Overlay previous images for comparison
  • Control dermoscopy lighting modes
  • Add and manage DermLite devices
  • Map lesions on clinical overview photos
  • Secure storage for medical images
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Designed for DermLite. Built for Real Clinical Workflows. The DermLite app helps you document, locate, and monitor lesions and body regions over time — all in one consistent workflow. Capture dermoscopic and clinical images, precisely map lesions on clinical overview photos, and return for easy, accurate follow-ups with consistent imaging and side-by-side comparison. Longitudinal documentation and decision-making become fast, reliable, and repeatable. Capture. Compare. Follow Up. Turn your iPhone into a calibrated, professional dermoscopy camera. • Capture dermoscopic and clinical images • Easily switch between iPhone cameras, including the telephoto camera • Overlay previous images to support consistent, reproducible follow-up photography With a Bluetooth-enabled DermLite: • Control dermoscopy lighting modes directly from the app • Multi-Shot: Capture multiple dermoscopic images in different lighting modes, including polarized and non-polarized, with a single press of the shutter button Calibrated for your DermLite device Purpose-built for DermLite dermatoscopes, the app automatically calibrates camera behavior to your specific DermLite model — whether Bluetooth-enabled or not. The result is accurate, consistent, and truly comparable images over time and across DermLite models. • Add and manage your DermLite dermatoscopes in the app • Automatic camera calibration per DermLite model • Wirelessly connect to and control compatible Bluetooth-enabled DermLite devices Stay Organized. By Lesion. Designed around how you actually work: • Quickly add basic patient information or create completely anonymous or semi-anonymous patients (using your own patient IDs) • Capture and manage multiple dermoscopic images of the same lesion or body region over time • Compare images side by side and track lesion evolution • Place dermoscopic images on clinical overview photos using lesion markers • Assign anatomical localization using a 2D body map • Simple, fast, and intuitive workflows for both short and long-term follow-ups Secure by Design Dermatology images deserve their own secure space — separate from personal photos. • Import dermatology images while keeping medical data out of your private photo library • Automatic backup to Hub, FotoFinder’s secure cloud platform (storage plans apply) Hub online portal access (subscription required): • Access your data from any browser • Create and share patient reports • Review, organize, and manage cases efficiently Optional AI Support An optional second opinion — always under your control. Use FotoFinder AIMEE*, an EU MDR-compliant, clinically validated AI service providing risk scores and decision support: • Obtain an AI Score for any suitable dermoscopic image with a single tap, within seconds • Supports reflection and self-assessment while keeping clinical responsibility where it belongs – with you Important Regulatory Information • FotoFinder AI is not FDA-cleared for use in the United States and not Health Canada–approved for use in Canada. In these regions, FotoFinder AI may be used for research purposes only and is not intended for clinical diagnostics or clinical decision-making in patient care. • Restriction: Intended for use by medical professionals in a medical environment. Not intended for lay use.

Screenshots

PsoriasisCalc4 screens
DermLite4 screens

Verdict

The call

The clearest difference is update cadence: DermLite at every 3 weeks against PsoriasisCalc's every 16 months. DermLite also leads on iOS requirement (15.6 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

PsoriasisCalc ships an update every 16 months, DermLite every 3 weeks. The most recent releases landed on October 16, 2026 and October 6, 2026 respectively.

Scorecard2 real differences · 6 level
PsoriasisCalc versus DermLite: the parameters behind the verdict, then further details
ParameterPsoriasisCalcDermLite
PriceFreeFree
Positive reviews—0.0% of reviews
Update frequencyEvery 16 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.615.6 — better
Further details — not scored
Size10 MB637 MB
Age rating17+17+
DeveloperAlejandro EscarioFotoFinder Systems GmbH

In-app purchases

None

PsoriasisCalc

No in-app purchases

None

DermLite

No in-app purchases

Questions

Is PsoriasisCalc free?
PsoriasisCalc is free to download, with no in-app purchases.
Is DermLite free?
DermLite is free to download, with no in-app purchases.
Do PsoriasisCalc or DermLite have ads?
Neither PsoriasisCalc nor DermLite shows ads.
Which is updated more often, PsoriasisCalc or DermLite?
PsoriasisCalc ships an update every 16 months, and DermLite every 3 weeks. Most recently, PsoriasisCalc was updated on October 16, 2026 and DermLite on October 6, 2026.

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