# Hadalog: Skin Condition Log — Tomorrow's skin, known today > Tomorrow's skin, known today (iPhone/iPad app by YANGLI CHEN.) - Source: https://appshunter.io/ios/app/hadalog-skin-condition-log/id6793892712 (this page in markdown: same URL + `.md`) - Developer: [YANGLI CHEN](https://appshunter.io/developer/1886058795) - Category: Health & Fitness, Lifestyle - Price: Free with in-app purchases - Age rating: 12+ - Requires: iOS 26.0 · 8 MB - Languages: American English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, Canadian French, German (Germany) and 23 more - Released: 2026-07-26 - Data updated: 2026-08-17 - User reviews in markdown: https://appshunter.io/ios/app/hadalog-skin-condition-log/id6793892712/reviews.md ## What is Hadalog? Hadalog makes "why is my skin different today?" visible as an overlap of weather and daily habits. No camera, no photos of your face. ■ How it works Tap through three questions — tightness, oiliness, unsettledness — on a five-point scale. It takes about fifteen seconds. If you own a moisture meter, you can enter its readings instead. Weather (humidity, temperature, UV, wind) and Health (sleep, steps, water, cycle) are gathered automatically for the items you allow, and treated as that day's inputs. In the evening, one tap tells the app how it actually went, and the forecast moves closer to your own patterns. After fourteen days of records, it switches from general patterns to your own. Optional tags let you note what you saw — breakouts, redness, itchiness, dark spots, dullness. Register the products you use and you can later compare your average index on the days you used them against the days you did not. You can also record and check back from Apple Watch, and put today's index on a complication. ■ Free features ・Today's skin condition index ・Today's care suggestions ・Daily entries and records (unlimited) ・Product log ・Evening check-back ・Calendar and 7-day trend ■ With full access (one-time purchase) ・Tomorrow's forecast and suggestions ・Long-range trends, factor correlations, cycle phase ・Products and your index ・PDF export ・Local backup ■ Your data Your records and Health data never leave your device, and no account is needed. Only when fetching the weather is your location sent to Apple. Full access is a one-time purchase. It is not a subscription — buy it once and it stays. Recording and today's index are free and unlimited. Hadalog is a self-tracking app. It is not a substitute for medical diagnosis or care. If something concerns you and persists, please consult a dermatologist. ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | ハダログ フルアクセス | $9.99 | one-time | ## Version history (last 3 releases) ### 1.2 — 2026-08-13 ・Try every full access feature for 7 days after you install ・What you noticed (breakouts, redness, itchiness, dark spots, dullness) now shapes the day's suggestions too ・Note when you started using a product ・Undo a deletion of a record or a product ・Backups now include your area, notification times and Health choices Fixes ・When no area was set, the app said "Couldn't get the weather. Check your connection" — which was not the reason — and offered no way to set one. You can now reach both current location and area from there ・With no weather or Health data at all, the app still said "Nothing special needed today". It now says when there is nothing to go on ・Swiping the entry sheet down discarded your input without asking. It now asks ・Secondary text was too faint to read comfortably in bright light. It is darker now ・Cycle-phase trends and factor relationships now show how many days they are based on. Phases with fewer than 3 days are not shown ・The self-check showed "Average" even when nothing was selected. It now says "Not selected" ・Settings had a different background from the other tabs. Fixed ・At the largest text size, the wording for the index level was cut off. Fixed ### 1.1 — 2026-08-03 ・Log the products you use, and compare your average index on the days you used them against the days you did not (logging is free) ・Tag what you noticed — breakouts, redness, itchiness, dark spots, dullness ・See your average on past days whose weather was like tomorrow's ・Enter the three-question self-check straight from Apple Watch ・Change the notification times Fixes ・Answering the evening check-back was not actually feeding your own patterns into the forecast. Fixed ・On devices set to the Hijri or Buddhist calendar, the history calendar showed no record marks. Fixed ・Permission dialogs and the Home Screen app name appeared in Japanese in every language. Now localised ・Backups did not include your learned patterns, so restoring reset them. They are now included ・Purchase and restore results were sometimes not shown. They are now ・Chart and calendar bands were distinguished by colour alone. They now differ in shape too ### 1.0 — 2026-07-26 No release notes. ## More apps by YANGLI CHEN - [Trero: Workout Log & Goals](https://appshunter.io/ios/app/trero-workout-log-and-goals/id6760746164) - [PrintSummary: School Handouts](https://appshunter.io/ios/app/printsummary-school-handouts/id6761879860) - [SaunaFlow: Sauna & Cold Timer](https://appshunter.io/ios/app/saunaflow-sauna-and-cold-timer/id6761906547) - [IeKan: Family Home Care](https://appshunter.io/ios/app/iekan-family-home-care/id6764244913) - [TsukiLift - Cycle & Strength](https://appshunter.io/ios/app/tsukilift-cycle-and-strength/id6767084251) - [CareHours: Caregiver Wages](https://appshunter.io/ios/app/carehours-caregiver-wages/id6769304063) All apps by YANGLI CHEN: https://appshunter.io/developer/1886058795 --- *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 2026-08-17.*