Fourteen publicly documented case studies from Pinterest, Twitter, Starbucks, Tinder, Uber, Spotify, Alibaba, Trivago, BMW, Forbes, OYO, Lancôme and Flipkart — every metric is sourced and linked.
Pinterest rebuilt their mobile web as a PWA after realising only 1% of mobile users were logging in. The new installable web app tripled time spent and grew core engagements by 60%.
"Time spent on the new mobile web is up by 40%, while logins are up 370%, and ad click-throughs are up 50%."
— Addy Osmani / Zack Argyle, Pinterest engineering
Twitter Lite shipped as a PWA in 2017 to reach users on flaky 2G/3G connections. It became the default mobile web experience worldwide and cut bounce rate by 20%, all from a 600 KB initial download.
"Twitter Lite is now the fastest, least expensive, and most reliable way to use Twitter."
— Nicolas Gallagher, Engineering Lead — Twitter
Starbucks built their order-ahead experience as a PWA that’s 99.84% smaller than their iOS app (233 KB vs 148 MB). Customers can browse the menu, customize orders, and check out — even offline.
"The PWA doubled the number of web users who place orders each day."
— Formidable Labs / Starbucks engineering
Tinder Online launched as a PWA so users in emerging markets with low-storage Android phones could swipe without installing 100 MB. Login → swipe time dropped from 11.91s on native to 4.69s on PWA, with longer sessions and more messages sent.
"Tinder Online has reduced load times by 90%, all while delivering a top-class experience."
— Addy Osmani — Google Chrome team
m.uber.com is a PWA designed for low-end Android devices. The booking experience fits in under 50 KB gzipped, so riders in any market can request a car on any browser, on any network.
"Designed as an alternative to the native client, m.uber is a PWA that delivers a comparable booking experience for riders on low-end devices."
— Uber Engineering blog
After Apple’s App Store fee dispute, Spotify shifted heavy investment into open.spotify.com as an installable PWA. Users now install Spotify directly from the browser on desktop and Android — no app store, no 30% cut.
"The web player is now indistinguishable from our native desktop app for most listeners."
— Spotify product team, public statements
Alibaba rebuilt their mobile web as a PWA so first-time visitors could shop without downloading their 100 MB native app. Conversions on iOS jumped 14% and Android 30%, with users actively re-engaging from the home screen icon.
"Users now spend 74% more time per session on the new mobile web compared with the previous version."
— Alibaba mobile engineering
Trivago shipped a PWA to capture users on flaky hotel-lobby Wi-Fi. Add-to-home-screen visitors converted to hotel offers 97% more than browser-only visitors, and engagement jumped 150% across the funnel.
"Adding to the home screen translated into a 97% increase in click-outs to hotel offers."
— Trivago engineering
BMW rebuilt bmw.com as a PWA. Site-to-dealer click-throughs jumped 49%, mobile traffic to bmw.com grew 50%, and page-to-page transitions became four times faster on average.
"The new bmw.com is fast, looks visually stunning, and provides a great experience."
— Jens Monsees, VP digital — BMW
Forbes redesigned their reader-facing site as a PWA after realising the mobile site was their dominant traffic source. Load time dropped from 3-12s to ~0.8s, and impressions per session grew 10% with ad viewability up 20%.
"Mobile web users went from a frustrating experience to one that’s nearly instant."
— Salah Zalatimo, SVP product — Forbes
OYO’s Lite PWA is just 1 MB and built for tier-2/3 India where storage and bandwidth are scarce. The PWA loads in 1.5s on 2G, and converts three times better than their native app for first-time bookers.
"OYO Lite was built to give every Indian a world-class booking experience, no matter their device."
— Anil Goel, CTO — OYO
L’Oréal’s Lancôme brand rebuilt their mobile site as a PWA. Page load dropped 84%, sessions on iOS rose 53%, and conversions grew 17% — paying off the entire PWA investment within months.
"The PWA delivered a 17% increase in conversions and a 53% rise in mobile sessions on iOS."
— Lancôme digital team
Flipkart Lite was one of the earliest production PWAs. Time spent per session tripled to 3.5 minutes, and the install-from-browser flow drove 40% higher re-engagement than the mobile web alone.
"Flipkart Lite delivered a 70% greater conversion rate than the mobile web experience."
— Flipkart engineering