# Culprit: Skincare Diary — Find the product to suspect

> Find the product to suspect (iPhone/iPad app by Vassiliy Shmigirilov.)

- Source: https://appshunter.io/ios/app/culprit-skincare-diary/id6783813841 (this page in markdown: same URL + `.md`)
- Developer: [Vassiliy Shmigirilov](https://appshunter.io/developer/1896660058)
- Category: Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 2 MB
- Languages: American English
- Released: 2026-06-30
- Data updated: 2026-07-23
- User reviews in markdown: https://appshunter.io/ios/app/culprit-skincare-diary/id6783813841/reviews.md

## What is Culprit?

Broke out and can't tell which product did it? Culprit answers one question, on your own data: which product on your shelf is the culprit?

Nothing you log ever leaves your iPhone — no cloud, no account, no face-scan AI. Every product, every skin note, every optional photo stays on your device and is read entirely on-device. Culprit's privacy label reads Data Not Collected — the thing the cloud skin-scan apps can't say.

HOW IT WORKS
You log your shelf — the skincare products you actually own and use — and keep a simple AM/PM routine. A 20-second daily note captures how your skin reacted: clear, a little reactive, or a breakout, with an optional photo for your eyes only. Culprit stays quiet for about a week while it gathers signal. After that, its on-device engine names the product to suspect — for example: "Niacinamide serum appeared on 4 of your 5 most reactive days." It is a correlation from your own logs, an observation, never a diagnosis.

Culprit is a calm, cosmetic product-reaction tracker — not a medical app. It points at a product, never at a condition, and is not a substitute for a dermatologist.

WHAT YOU GET FREE
- Your shelf of products and a simple AM/PM routine
- The 20-second daily skin-reaction note, with an optional on-device photo
- Your day-by-day log, kept privately on your iPhone

WHAT PREMIUM UNLOCKS
- The full ranked suspect read — every suspect beyond your first, ordered by how strongly it tracks your breakouts
- The pattern detail behind each suspect, so you can read the correlation for yourself
- Your full reaction history as it builds

Calm by design: no streaks, no badges, no before/after pressure, no glow-up hype. Culprit runs fully offline — no Wi-Fi needed except Apple's StoreKit for subscriptions. No third-party analytics. No sign-in. No server.

SUBSCRIPTION TERMS
Culprit offers an annual plan at $29.99/year with a 7-day free trial, a weekly plan at $4.99/week, and a one-time lifetime purchase at $49.99.
- Payment is charged to your Apple Account at confirmation of purchase.
- Subscriptions automatically renew (auto-renew) unless you cancel at least 24 hours before the end of the period.
- Your Apple Account is charged for renewal within 24 hours before the end of the current period.
- Manage or cancel anytime in Settings → Apple ID → Subscriptions.
- Any unused portion of a free trial is forfeited when you purchase a subscription.

Privacy Policy: https://hadgerapps.github.io/culprit/privacy/
Terms of Use (EULA): https://hadgerapps.github.io/culprit/terms/

From Hadger. Support, privacy, and terms at https://hadgerapps.github.io/culprit/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Culprit Annual | $29.99 | per year |
| Culprit Weekly | $4.99 | per 7 days |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Culprit Lifetime | $49.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-06-30

No release notes.

## More apps by Vassiliy Shmigirilov

- [Soft Day: kind journal](https://appshunter.io/ios/app/soft-day-kind-journal/id6769456388)
- [Pith Voice: AI Diary Journal](https://appshunter.io/ios/app/pith-voice-ai-diary-journal/id6770544476)
- [Cushion: safe to spend](https://appshunter.io/ios/app/cushion-safe-to-spend/id6777035082)
- [Morsel: Food & Feeling](https://appshunter.io/ios/app/morsel-food-and-feeling/id6779900084)
- [Ruse: Daily Brain Puzzle](https://appshunter.io/ios/app/ruse-daily-brain-puzzle/id6785173718)

All apps by Vassiliy Shmigirilov: https://appshunter.io/developer/1896660058

## Related topics

[culprit](https://appshunter.io/ios/topics/culprit)

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*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 2026-07-23.*