Source-backed analysis12
Review basis
Research-based review: the AppDuo Editorial Team compiled it from official pages, documentation, app stores, press and user feedback, without hands-on testing. Every claim links to a source with the date it was checked.
12 reference sourcesInformation updated Nov 11, 2026
How we review
Phia Review
Free fashion price-comparison app and extension that auto-applies coupons
By AppDuo Editorial Team · Fact-checked
- iOS
- Browser extension
- Web
On this page
Decide at a glance
Our verdict
Phia suits frequent online fashion shoppers who want free price comparison across new and resale items. Privacy and trust are the catch: an earlier extension uploaded page content to its servers, and in 2026 Phia admitted claiming affiliate commissions on sales it did not refer.
Best for: Online fashion shoppers who compare new and resale prices
Skip it if: Anyone unwilling to let an extension read their browsing history
Pros
- Free, with an iOS app and a Chrome extension
- Compares prices across 220,000+ sites, including resale (per the vendor)
- Auto-applies coupons, sends price-drop alerts, points redeemable for gift cards
Cons
- Admitted affiliate misattribution in 2026 and was suspended by Impact.com; Bloomberg reports the founders knew since December 2025
- An earlier extension uploaded copies of page HTML; the current version still logs URLs
All pros and cons · Who is it for?
More pros
- Rated 4.76/5 on the App Store from about 22,800 ratings
More cons
- English-only interface; no Android app
Best for
- iPhone users who want a quick price check inside Safari
Skip it if
- Android users: there is no Android app
Experience & key features
Phia is an AI shopping tool, mostly for fashion, offered as an iOS app and a Chrome extension. Its website says it compares prices across 220,000+ sites. TechCrunch reports it launched in April 2025, was co-founded by Phoebe Gates and Sophia Kianni, and pitches itself as "Google Flights for fashion".
According to the App Store listing, users tap "Should I Buy This?" in Safari to see whether a price is fair and find cheaper options across retail and resale. The app also applies coupons at checkout, sends price-drop alerts and awards points redeemable for gift cards. Other features include shopping from screenshots and Phia Stylist, which generates outfit images from photos users choose.
The app is free with no paid tier. Phia earns affiliate commissions: its Chrome Web Store listing says it may earn a commission when users buy through its links, and the website invites brands to feature products in feeds and collections. Compared with Honey or Rakuten, Phia is narrower (mostly fashion) but adds resale listings.
Two episodes are worth knowing before installing. In November 2025 Fortune reported that an earlier extension version uploaded copies of opened pages' HTML; Phia removed the feature. In July 2026 Bloomberg and researcher Ben Edelman reported the extension claimed commissions on sales Phia did not refer. Phia acknowledged "misattributions", called it a bug and is reversing transactions with partners; Impact.com suspended its account. In August 2026 Bloomberg, citing internal messages, reported the co-founders had known since December 2025.
Screenshots
Plans & pricing
Prices last verified Nov 11, 2026
Phia
PersonalFree
Free iOS app and Chrome extension. Phia earns commissions from retailers through affiliate programs.
- Free plan limits
- All features listed on the website and App Store are free; no paid tier was found.
- Free trial
- No free trial
Cancellation & refunds
Not applicable: the app is free and has no paid plan.
Privacy
Phia's privacy policy (updated 4 Nov 2026) says it collects account details, photos users choose for virtual try-on and Phia Stylist, chat history, activity on its services (URLs viewed, mouse movements, keystrokes), information about other shopping sites users visit (which may include page content) and possibly the browser extensions installed. Photos are sent to third-party AI models (e.g. Google Gemini, OpenAI GPT); Phia says it does not use them to train AI. Connecting Gmail is optional and read-only. The extension's Chrome Web Store listing declares that it handles web history and website content. In 2025, security researchers found an earlier extension version uploading copies of page HTML to Phia's servers (see controversies).
Phia alternatives
Controversies & incidents
Issues documented by the press, regulators, courts or the vendor itself. Every item is sourced; unproven claims are labelled as allegations. Last researched: Nov 11, 2026
- High impactConfirmedEthics ·
Affiliate commissions claimed on sales Phia did not refer ("cookie stuffing")
Per Bloomberg, Ben Edelman and Capital One Shopping, the extension set affiliate cookies to claim commissions on sales referred by others. Phia acknowledged misattributions, removed the features and is reversing transactions; Impact.com suspended Phia.
Read the full account
Per Engadget's summary, investigations by Edelman, Bloomberg and Capital One Shopping found the extension silently loaded a Phia affiliate link in a second tab after a merchant visit, which could override other publishers' referrals; the feature dated from December 2025. TechCrunch (10 July 2026) reported Impact.com suspended Phia. On 12 August 2026 Bloomberg (republished by Fortune), citing internal Slack messages, reported that Phoebe Gates and Sophia Kianni pushed these features and knew of the problem from December 2025, although Phia said in July it had learned of it "within the last 24 hours". Bloomberg also reported a Phia data scientist estimated such cookies accounted for about 51% of merchandise value Phia claimed in June 2026; Phia called that analysis inaccurate. Average daily revenue fell from about $80,000 to $10,000–28,000 after the features were disabled. No regulator or court action against Phia was found.
Vendor response
In July 2026 Phia told Bloomberg a recent release had caused "misattributions" for a subset of users and was resolved. In August 2026 Phia said all features causing misattributions were removed on 7 July 2026, that it is reviewing every transaction, has begun issuing reversals to brand partners and is hiring a head of compliance.
Sources:Fortune / Bloomberg (2026-08-12)TechCrunch (2026-07-10)Engadget (2026-07-11)
- Medium impactResolvedPrivacy ·
Chrome extension uploaded copies of page HTML to Phia's servers
Per Fortune, researchers found an earlier extension version captured copies of most pages users opened, including non-shopping pages. Phia removed the feature; it now logs URLs only.
Read the full account
Fortune reported that researcher Maahir Sharma found a function, "logCompleteHTMLtoGCS", in the extension's code that sent page HTML even when users were not on shopping sites; three independent researchers replicated the findings. Expert Nick Nikiforakis said that because users sign in with Gmail or Apple, Phia could link browsing history to real identities. NowSecure (19 Nov 2025) analysed the iOS Safari extension and found it logged URLs including a banking login URL, and that the app disables App Transport Security; NowSecure said it is unclear whether this was intentional. Per Fortune, Phia did not notify users or confirm what happened to data already sent.
Vendor response
Phia told Fortune all versions logged data "in an aggregate and anonymous way" to discover new retail websites, adding: "Phia currently only logs URLs. Phia has never in the past, or at present stored this data."
Frequently asked questions
Is Phia free?
Yes. The iOS app and Chrome extension are free and the website lists no paid plan. Phia earns money from affiliate commissions.
Does Phia have an Android app?
No. The website offers only an iOS app and a Chrome extension.
Does Phia collect browsing history?
Yes. Its policy says it collects URLs viewed and information about shopping sites users visit. Phia told Fortune it currently only logs URLs and does not store that data.
What was Phia's affiliate commission issue?
In July 2026 Bloomberg reported that Phia's extension set affiliate cookies without users clicking Phia links, earning commissions on sales referred by others. Phia called it a bug, removed the features on 7 July 2026 and says it is reversing misattributed transactions. The reports describe retailers and other referrers as the parties harmed.
Does Phia support Vietnamese?
No. Both the App Store and Chrome Web Store list English only.
Review evidence & sources12
Scores
- Ease of use
- 7.5
- Features
- 7.5
- Value for money
- 7.0
- Performance
- 6.5
- Support
- 6.0
- Privacy & security
- 4.5
Why this score
One-tap price check in Safari or Chrome, but the interface is English-only and there is no Android app.
Why this score
Price comparison, coupons, price alerts, rewards, screenshot search and virtual try-on (per the App Store and Phia's policy); fashion only.
Why this score
Free; Phia lives on affiliate commissions. Its 2026 admission of misattributed commissions and the Impact.com suspension undercut trust in that very model.
Why this score
No reliable independent measurement of speed or comparison accuracy was found; the score leans on App Store and Chrome Web Store user ratings.
Why this score
A contact page and FAQ exist; no published response time or chat support was found.
Why this score
The policy allows broad collection: URLs, mouse movements, keystrokes, shopping-page content, photos sent to third-party AI. An earlier extension uploaded page HTML, and per Fortune Phia did not notify users.
What users say
- App Store (US)4.8/5 · 22,799
- Chrome Web Store4.9/5 · 185
Sources
- Vendor-providedPhia official websiteNov 11, 2026
- Vendor-providedPhia privacy policy (updated 4/11/2026)Nov 11, 2026
- storePhia on the App StoreNov 11, 2026
- pressTechCrunch (2025-09-20)Nov 11, 2026
- pressFortune (2025-11-15)Nov 11, 2026
- pressNowSecure analysis (2025-11-19)Nov 11, 2026
- pressEngadget (2026-07-11)Nov 11, 2026
- pressThe Fashion Law (2026-07-13)Nov 11, 2026
- pressMezha (2026-07-11, citing Bloomberg)Nov 11, 2026
- storePhia on the Chrome Web StoreNov 11, 2026
- pressTechCrunch (2026-07-10)Nov 11, 2026
- pressFortune / Bloomberg (2026-08-12)Nov 11, 2026
Specs & compatibility
- Developer
- Phia Holdings, Inc.
- Headquarters
- United States
- Launched
- 2025
- Category
- Shopping
Capabilities
- AI features
- Mobile app
- Integrations
Platforms
- iOS
- Browser extension
- Web
Interface languages
- English
Integrations
- Safari (iOS)
- Google Chrome
- Gmail
Support
- Help center
Change history
- Update.Privacy policy updated to cover virtual try-on and Phia Stylist.
- Update.Bloomberg (republished by Fortune) cites internal messages saying the co-founders knew since December 2025; Phia begins reversing partner transactions.
- Update.Bloomberg reports Phia claimed affiliate commissions it did not earn; Phia calls it a bug and Impact.com suspends it.
Full change history (7)
- Feature.The feature behind the affiliate misattribution rolls out, per Edelman and Bloomberg (via Engadget).
- Update.Fortune reports researchers found the Chrome extension uploading page HTML; Phia removes the feature.
- Company.$8M seed round led by Kleiner Perkins announced; about 500,000 users, per TechCrunch.
- Launch.Phia launches, per TechCrunch.
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