--- title: Hulu maintained the lead in the CTV Publisher Trust Indexes; discovery+ debuting on the podium in October 2021 description: In this blog, you will find insights about the top 10 Roku and Amazon Fire TV apps with the highest ad quality in October 2021 in North America. image: https://www.pixalate.com/hubfs/Top%2010%20Apps%20PTI%20Graphic%20Blog%20Template.png --- [![pixalate-full-logo](https://www.pixalate.com/hs-fs/hubfs/Pixalate_Logos/pixalate-full-logo.jpg?width=150&height=60&name=pixalate-full-logo.jpg "pixalate-full-logo")](https://www.pixalate.com) Search **Menu** ** ** ![](https://www.pixalate.com/hubfs/Blog_Media/Blog%20photos/pixalate-blog-bg.png) [CTV](https://www.pixalate.com/blog/topic/ctv) | [Rankings](https://www.pixalate.com/blog/topic/rankings) | 2 min read # Hulu maintained the lead in the CTV Publisher Trust Indexes; discovery+ debuting on the podium in October 2021 [![Piotr Boiwka](https://www.pixalate.com/hubfs/T04HJ6UKU-U020R2VVALF-e2a0de641049-512.jpg)](https://www.pixalate.com/blog/author/piotr-boiwka) Written by [Piotr Boiwka](https://www.pixalate.com/blog/author/piotr-boiwka) Dec 1, 2021 12:30:00 PM ![Top 10 Apps PTI Graphic Blog Template](https://www.pixalate.com/hs-fs/hubfs/Top%2010%20Apps%20PTI%20Graphic%20Blog%20Template.png?width=646&name=Top%2010%20Apps%20PTI%20Graphic%20Blog%20Template.png) ![Top Google Play Store PTI October 2021](https://www.pixalate.com/hs-fs/hubfs/Top%20Google%20Play%20Store%20PTI%20October%202021.png?width=646&name=Top%20Google%20Play%20Store%20PTI%20October%202021.png) [Hulu](https://ratings.pixalate.com/insight/ctv/2285/NA/roku?country=GLOBAL&month=202110#app-traffic-overlap) has remained the leader of both Pixalate’s [CTV](https://www.pixalate.com/global-connected-tv-ad-supply-chain-trends-report-h1-2021) Publisher Trust Indexes in October 2021 in North America. The app performed remarkably across all measured metrics, particularly in [Amazon Fire TV](https://ratings.pixalate.com/rankings/ctv/publisher-trust-index/firetv/GLOBAL/NA/GLOBAL/20211001) ranking, where [Hulu](https://ratings.pixalate.com/insight/ctv/2285/NA/roku?country=GLOBAL&month=202110) scored over 90 across all categories. It is also worth highlighting that [Hulu](https://ratings.pixalate.com/insight/ctv/2285/NA/roku?country=GLOBAL&month=202110#app-traffic-overlap) has maintained a low risk of potential [Invalid Traffic](https://www.pixalate.com/publisher-trust-index-methodology) ([IVT](https://www.pixalate.com/blog/ad-fraud-rates-ctv-h1-2021)) and ID Spoofing and is the firm leader of estimated ad spend among all CTV apps on both [Roku](https://ratings.pixalate.com/rankings/ctv/publisher-trust-index/roku/GLOBAL/NA/GLOBAL/20211001) and [Amazon Fire TV](https://www.pixalate.com/blog/amazon-fire-tv-growth-h1-2021) platforms. However, [Hulu](https://ratings.pixalate.com/insight/ctv/B00F4A1GN6/NA/firetv?country=GLOBAL&month=202110) is not the only quality [CTV](https://www.pixalate.com/blog/ctv-ad-spend-north-america-trends) app. Behind the leader, there is fierce competition among apps aiming to dethrone [Hulu](https://ratings.pixalate.com/insight/ctv/B00F4A1GN6/NA/firetv?country=GLOBAL&month=202110). [discovery+](https://ratings.pixalate.com/insight/ctv/B08F8XQLQZ/NA/firetv?country=GLOBAL&month=202110#app-brand-safety) is one of them, frequently appearing in the top 10 of the [Roku](https://ratings.pixalate.com/rankings/ctv/publisher-trust-index/roku/GLOBAL/NA/GLOBAL/20211001) ranking of the best quality apps for advertisers. In addition, the app has the [largest](https://www.pixalate.com/blog/public-companies-pti-october-2021) estimated reach among all apps present in the [Amazon Fire TV](https://ratings.pixalate.com/rankings/ctv/publisher-trust-index/firetv/GLOBAL/NA/GLOBAL/20211001) store, being close to 27 million users per month. [discovery+](https://ratings.pixalate.com/insight/ctv/B08F8XQLQZ/NA/firetv?country=GLOBAL&month=202110#app-brand-safety) also performed well across all measured metrics, including high scores in the IVT and Engagement categories. Moreover, [discovery+](https://ratings.pixalate.com/insight/ctv/B08F8XQLQZ/NA/firetv?country=GLOBAL&month=202110#app-developer-overview) indicated low description risks potentially harmful to Brand Safety. ##### **There are more quality CTV apps for advertisers** [SlingTV](https://ratings.pixalate.com/insight/ctv/46041/NA/roku?country=GLOBAL&month=202110#app-brand-safety) is one of them. The app obtained two top 5 spots in October, including [maintaining](https://www.pixalate.com/blog/pti-ctv-na-september-2021) the runner-up position in the [Roku](https://ratings.pixalate.com/rankings/ctv/publisher-trust-index/roku/GLOBAL/NA/GLOBAL/20211001) ranking. [SlingTV](https://ratings.pixalate.com/insight/ctv/46041/NA/roku?country=GLOBAL&month=202110#app-brand-safety) scored impressively across all measured metrics, including a 95 score in the Ad Density category. The channel aggregator also indicated low general risk scores both globally and in North America. **[![Learn More](https://no-cache.hubspot.com/cta/default/2364596/08021cf0-6a60-4298-af7e-cb3ae745e6cd.png)](https://cta-redirect.hubspot.com/cta/redirect/2364596/08021cf0-6a60-4298-af7e-cb3ae745e6cd)** **Disclaimer  ** *The content of this blog, and the Publisher Trust Indexes (collectively, the “Indexes”), reflect Pixalate’s opinions with respect to factors that Pixalate believes may be useful to the digital media industry. The Indexes examine programmatic advertising activity on mobile apps and Connected TV (CTV) apps (collectively, the “apps”). As cited in the Indexes and referenced in the Indexes’ key findings reproduced herein, the ratings and rankings in the Indexes are based on a number of metrics (e.g., “Brand Safety”) and Pixalate’s opinions regarding the relative performance of each app publisher with respect to the metrics. The data is derived from buy-side, predominantly open auction, programmatic advertising transactions, as measured by Pixalate. The Indexes examine global advertising activity across North America, EMEA, APAC, and LATAM, respectively, as well as programmatic advertising activity within discrete app categories. Any insights shared are grounded in Pixalate’s proprietary technology and analytics, which Pixalate is continuously evaluating and updating. Any references to outside sources in the Indexes and herein should not be construed as endorsements. Pixalate’s opinions are just that, opinions, which means that they are neither facts nor guarantees; and neither this press release nor the Indexes are intended to impugn the standing or reputation of any person, entity or app.* ### Search Blog Search ### Follow Pixalate ### Subscribe to our blog *By entering your email address and clicking Subscribe, you are agreeing to our [Terms of Use ](https://www.pixalate.com/terms)and [Privacy Policy.](https://www.pixalate.com/privacypolicy) Previous Story [← Status Quo broken in North America - Spotify and Photo Collage led the way in Mobile Publisher Trust Indexes in October](https://www.pixalate.com/blog/top-10-mobile-apps-advertising-october-2021) [** ](https://www.pixalate.com/blog) Next Story [Programmatic CTV ad spend in EMEA doubled last year →](https://www.pixalate.com/blog/ctv-ad-spend-emea-trends) ## You May Also Like These Stories on CTV [![](https://www.pixalate.com/hubfs/Blog%20Media/2026%20Covers%20and%20Images/OpenEPG%20landing%20page%20hero%20image.png) ](https://www.pixalate.com/blog/pixalate-launches-openepg-1.0-analytics-to-bring-linear-tv-grade-measurement-verification-to-open-programmatic-ctv) [Mobile](https://www.pixalate.com/blog/topic/mobile) ### [Pixalate Launches OpenEPG™ 1.0 Analytics to Bring Linear TV-Grade Measurement & Verification to Open Programmatic CTV; 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