IsoCalc: Isotretinoin Tracker
Dose in mg/kg, photos, alerts
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Know exactly where your isotretinoin treatment stands: cumulative dose in mg/kg, expected end date, skin photo diary and reminders.
IsoCalc keeps your isotretinoin treatment under control. Enter your weight, daily dose and the goal set by your doctor, and the app does the math every day.
YOUR TREATMENT AT A GLANCE
• Cumulative dose so far in mg and mg/kg, with a clear progress ring
• Daily dose per kilogram of body weight
• Remaining dose, days left and the expected end date
• Goal as a cumulative dose (for example 120 to 150 mg/kg) or as a number of months
• Earlier dosing periods and previous courses count towards the total
PHOTO DIARY
Take progress photos of your skin and see how it changes over the weeks.
REMINDERS
Never miss a dose, a blood test or a dermatologist visit. Daily, weekly, monthly and more.
ISOCALC PREMIUM
• No ads
• PDF report for your doctor with all doses and dates
• Before and after photo comparison
SAFE AND SYNCED
Sign in with Apple, Google or email. Your data syncs securely and you can delete your account and all data anytime in the app.
IsoCalc does not give medical advice and does not replace your doctor. The dose and length of treatment are always decided by your doctor.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://dmnsz.app/isocalc/privacy
IsoCalc 4.0 is a complete rebuild: new clean design, more precise dose math (decimal weight, exact pounds), photo diary, reminders, a PDF report for your doctor and account deletion. Facebook sign-in was removed: use Forgot password with the same email.
The developer, Damian Szejnoch, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Linked to You
The following data may be collected and linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Damian Szejnoch
- Size
- 14.7 MB
- Category
- Medical
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
English and 11 more
- English, Dutch, French, German, Italian, Japanese, Korean, Polish, Portuguese, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Contains
Advertising
Health or Wellness Topics
- In-App Purchases
Yes
- Premium Account $0.99
- Premium Account $1.99
- Copyright
- © 2026 dmnsz