Skip to content
Think Dirty - Shop Clean app icon#1in Ingredient Checking

Think Dirty - Shop Clean

Ingredient Checking · Free + IAP
S Tier
Best in class · #1 of 7
96
4.8★56.7K ratings
Free + IAPprice
26dsince update

What is Think Dirty?

Think Dirty is a health and fitness app that scans or searches skincare, cosmetic, hair care, personal care, household, baby and pet products. It returns ratings and ingredient analysis based on the listing's stated focus on health-related impact and chemical content. Premium features add personalized ingredient alerts, curated product lists and product comparison.

Pricing. Think Dirty - Shop Clean is free to download, with in-app purchases on the App Store.

Good for

  • Checking a skincare or makeup barcode while shopping in store
  • Flagging allergens or acne triggers before buying a product
  • Comparing similar products side by side before choosing one

Screenshots

1 / 8

Why this app is in S tier

Think Dirty scores 96 out of 100: rating 96, rating count 88, App Store search rank 99, update recency 100. The four parts are averaged with no weights, and S tier follows from that score within this list. The full explanation, as data.

Description

Think Dirty is your go-to skincare scanner, beauty product checker, and cosmetic ingredient analyzer - designed to help you decode labels and make safer choices. Loved by over 8 million users, our app makes it easy to learn about potentially toxic ingredients in your skin care, hair care, and cosmetic products. Use our barcode scanner, and Think Dirty instantly delivers easy-to-understand, trustworthy product ratings and ingredient analysis. Whether comparing products, checking for skin allergy triggers, or scanning items in-store, Think Dirty empowers you to shop smarter and live cleaner. Think Dirty is free to download with premium features for deeper product reviews and clean beauty human curated recommendations and verified scientific data, powered by AI. WHY THINK DIRTY? - Ingredient-Focused Ratings: Think Dirty® uniquely evaluates products based solely on their chemical content, not brand reputation or marketing claims. - No Greenwashing: We don't consider environmental or social factors that can artificially lower a product's toxicity rating - our focus is strictly on health-related impact. - Truly Independent: Think Dirty® remains unaffiliated with third parties, ensuring

Compare in Ingredient Checking

MeasureThink DirtyOnSkinOlive
TierSSA
Score96 / 10094 / 10086 / 100
Rating4.8 ★4.7 ★4.8 ★
Ratings56.7K33.4K40.2K
Latest ratings · 180d2.3 ★ · 20 reviews3.5 ★ · 20 reviews3.3 ★ · 20 reviews
Last update26d ago82d ago7d ago
PriceFree + IAPFree + IAPFree + IAP

Alternatives

See all 6 ›
  1. OnSkinFree + IAP · ★ 4.7S
  2. OliveFree + IAP · ★ 4.8A
  3. Nutrify AIFree download · ★ 4.7B

Questions about Think Dirty

Does the app rate products by brand or marketing claims?

The listing says ratings are based solely on chemical content, not brand reputation or marketing claims. It also says environmental and social factors are not considered in the toxicity rating.

Which features require premium?

The listing marks real-time beauty scanner, personalized ingredient preferences, and ingredient checker and alerts as available with Premium and All Access. Curated Safe Product Lists are listed as Premium only.

What if a product is not in the database?

Users can submit a UPC and use OCR to scan the barcode and ingredients label. Contributors receive a discount code and a notification once the product is added.

Is Think Dirty free?

Think Dirty is free to download, with in-app purchases.

What is Think Dirty good for?

Think Dirty is built for checking a skincare or makeup barcode while shopping in store, flagging allergens or acne triggers before buying a product, comparing similar products side by side before choosing one. It sits in the ingredient checking list on AppTierList.

Is Think Dirty worth it?

Think Dirty is S tier, ranked #1 of 7 ingredient checking apps with a score of 96 out of 100, from a 4.8 App Store rating across 56,733 ratings. That is the top of its list.

How does Think Dirty compare to OnSkin?

Think Dirty is S tier at 96; OnSkin is S tier at 94. Think Dirty ranks higher. Think Dirty is free to download, with in-app purchases, OnSkin is free to download, with in-app purchases.

How often is Think Dirty updated?

Think Dirty was updated 26 days ago, which counts in its favour.

Made Think Dirty?Claim the page for free: your own one-liner, a website link and the Verified mark.
Claim for Free

All the facts

List
Ingredient Checking
Tier
S (Best in class)
Score
96 / 100
Rank in list
#1 of 7
Ranking certainty
settled
Price
Free + IAP
App Store rating
4.8 out of 5
Number of ratings
56,733
Recent reviews
2.3 from 20 in the last 180 days
Current version
(26 days ago)
App Store data read
App Store category
Health & Fitness
Good for
Checking a skincare or makeup barcode while shopping in store, Flagging allergens or acne triggers before buying a product, Comparing similar products side by side before choosing one
Requires
iOS 16.0 or later
Size
61 MB
Age rating
4+
Languages
3
Developer pages
Website · Support · Privacy policy
Maker
unclaimed
As data
JSON · why it ranks here

Ranking refreshed · how it is computed