--- title: "Q3 2023 Mobile Seller Trust Index: Top SSPs For Open Programmatic Ads" description: Pixalate released the Q3 2023 Mobile Seller Trust Indexes - the global seller quality ratings and rankings for programmatic ads sold on mobile apps. image: https://www.pixalate.com/hubfs/Blog_Media/Blog%20photos/Q3%202023%20Seller%20Trust%20Indexes%20-%20Mobile.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) [Seller Trust Index](https://www.pixalate.com/blog/topic/seller-trust-index) | [Company News](https://www.pixalate.com/blog/topic/company-news) | [Mobile](https://www.pixalate.com/blog/topic/mobile) | [Rankings](https://www.pixalate.com/blog/topic/rankings) | 2 min read # Pixalate Releases Q3 2023 Global Mobile Seller Trust Index: MobileFuse ranked No. 1 Supply Side Platform for Ad Supply Quality for the fourth consecutive quarter Written by [Pixalate](https://www.pixalate.com/blog/author/pixalate) Nov 28, 2023 12:00:00 PM *Admixer jumps to fourth place in Q3 2023 – the company’s first time in the top five mobile Supply Side Platforms (SSPs) on Pixalate’s Mobile Seller Trust Index * **LONDON, November 29, 2023 --** [Pixalate](https://www.pixalate.com/), the global market-leading ad fraud protection, privacy, and compliance analytics platform, today released the [Q3 2023 Mobile Seller Trust Indexes](https://ratings.pixalate.com/rankings/app/seller-trust-index/), the comprehensive global seller quality ratings and rankings for programmatic advertising sold on mobile apps available for download in the Google Play Store and Apple App Store. Pixalate’s Seller Trust Indexes are the worldwide standards in programmatic advertising quality ratings. The indexes evaluate and rank the quality and integrity of key sellers in the programmatic supply chain across channels, platforms, and devices. Mobile STI rankings are based on a variety of seller factors, including invalid traffic (IVT), reach, transparency, and more. Pixalate’s other indexes include the CTV Seller Trust Index for global Connected TV advertising and the Web Seller Trust Index for U.S. and International seller quality ratings based on desktop and mobile web advertising. See the full suite of [Pixalate’s Seller Trust Indexes](https://ratings.pixalate.com/rankings/app/seller-trust-index/). ## **The Top Supply Side Platforms (SSPs) for Global Programmatic Advertising Across Mobile Apps in Q3 2023** Here are the top five sellers of global programmatic mobile in-app advertising based on overall quality in Q3 2023: 1. MobileFuse LLC — Final Score: 92 (A) 2. VRTCAL — Final Score: 92 (A) 3. ironSource  — Final Score: 88 (A) 4. Admixer — Final Score: 88 (A) 5. OpenX — Final Score: 87 (A) MobileFuse has been No. 1 on the Mobile Seller Trust Index for four straight quarters, while OpenX has been in the top-five every quarter since Q1 2019.  [Visit Pixalate’s Mobile Seller Trust Index](https://ratings.pixalate.com/rankings/app/seller-trust-index/) to view the full rankings (48 SSPs ranked in Q3 2023). **About Pixalate** Pixalate is a global market-leading ad fraud protection, privacy, and compliance analytics platform. Pixalate works 24/7 to guard your reputation and grow your media value by offering the only system of coordinated solutions across display, app, video, and CTV for the detection and elimination of ad fraud. Pixalate is an MRC-accredited service for the detection and filtration of sophisticated invalid traffic (SIVT) across desktop and mobile web, mobile in-app, and CTV advertising. [www.pixalate.com](https://www.pixalate.com) **Disclaimer** The content of this press release, and the Seller Trust Indexes (collectively, the "Indexes"), reflect Pixalate's opinions with respect to factors that Pixalate believes may be useful to the digital media industry. As cited in the Indexes, the ratings and rankings in the Indexes are based on a number of metrics and Pixalate's opinions regarding the relative performance of each seller 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 the globe, in the U.S., and in North America, EMEA, APAC, and LATAM, respectively. 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 [← Q3 2023 Global Connected TV (CTV) Seller Trust Index: OpenX, FreeWheel, Magnite, Index Exchange Earn ‘A’ Grades Across Roku, Amazon Fire TV & Samsung For Open Programmatic Ad Supply Quality Rankings](https://www.pixalate.com/blog/q3-2023-global-ctv-seller-trust-index) [** ](https://www.pixalate.com/blog) Next Story [Pixalate’s Q3 2023 Web Seller Trust Index: Yahoo Ranked No. 1 Global Supply-Side Platform for Open Programmatic Advertising Quality →](https://www.pixalate.com/blog/q3-2023-global-web-seller-trust-index) ## You May Also Like These Stories on Seller Trust Index [![](https://www.pixalate.com/hubfs/Blog%20Media/2026%20Covers%20and%20Images/OpenEPG%20index%20image.png) ](https://www.pixalate.com/blog/pixalate-unveils-openepg-index-monthly-rankings-of-top-100-streaming-tv-shows-based-on-open-programmatic-ctv-ad-spend-consumer-reach-across-small-large-screens) [Seller Trust Index](https://www.pixalate.com/blog/topic/seller-trust-index) ### [Pixalate Unveils OpenEPG™ Index: Monthly Rankings of Top 100 Streaming TV Shows Based on Open Programmatic CTV Ad Spend & Consumer Reach Across Small & Large Screens; 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Google AdExchange Top-Ranked 'Direct' Seller in the US](https://www.pixalate.com/blog/pixalate-releases-q1-2026-mobile-seller-trust-index-2.0) Jun 12, 2026 9:00:00 AM | 5 min read ** ### 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) ![pixalate-logo-red-small](https://www.pixalate.com/hs-fs/hubfs/2018NewTemplate/pixalate-logo-red-small.png?width=208&name=pixalate-logo-red-small.png "pixalate-logo-red-small") ** 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) Products [Analytics](https://www.pixalate.com/products/analytics) [Blocking](https://www.pixalate.com/products/blocking) [Media Rating Terminal](https://www.pixalate.com/products/mrt) [Publisher Trust Indexes](https://www.pixalate.com/rankings/?group=app&reportId=publisherTrustIndex) [Seller Trust Indexes](https://www.pixalate.com/rankings/?group=app&reportId=publisherTrustIndex) [IoT Device Rankings](https://www.pixalate.com/rankings/?group=app&reportId=iotDeviceReach) Resources [Blog](https://blog.pixalate.com/) [Press](https://www.pixalate.com/press) [Careers](https://www.pixalate.com/jobs) [Team](https://info.pixalate.com/pixalate-leadership-team) Contact Email [** sales@pixalate.com ](mailto:sales@pixalate.com) [** privacy@pixalate.com ](mailto:privacy@pixalate.com) US: [** +1 888 749 2528 ](tel:+1%20888%20749%202528) EU: [** +44 (0)800 011 2050 ](tel:+44%20(0)800%20011%202050) Slack: [Join ATSAPI Slack Channel ](https://atsapi-pixalate.slack.com/join/shared_invite/zt-10dtow5cj-OEtlNr5yzJkrZMQUqcEEow#/shared-invite/email) Offices Global Offices US 1775 Greensboro Station Place, Suite 425, McLean, VA 22102 UK 20 North Audley Street London, W1K 6WE, United Kingdom EU 10 Earlsfort Terrace Dublin 2, D02 T380, Ireland Singapore 10 Anson Road, #22-02 International Plaza, Singapore 079903 [![facebook](https://www.pixalate.com/hubfs/footer/icons/facebook.png) ](https://www.facebook.com/pixalate) [![x](https://www.pixalate.com/hubfs/footer/icons/twitter-x.png) ](https://twitter.com/pixalateinc) [![linkedin](https://www.pixalate.com/hubfs/footer/icons/linkedin.png) ](https://www.linkedin.com/company/pixalate) ![wechat](https://www.pixalate.com/hubfs/footer/icons/wechat.png) [![slack](https://www.pixalate.com/hubfs/footer/icons/slack.png) ](https://atsapi-pixalate.slack.com/join/shared_invite/zt-10dtow5cj-OEtlNr5yzJkrZMQUqcEEow#/shared-invite/email) [Terms of Use](https://www.pixalate.com/terms) [Privacy Policy](https://www.pixalate.com/privacypolicy) [GDPR Compliance](https://www.pixalate.com/gdpr) Disclaimer Copyright © 2025 Pixalate [Back to top **](https://www.pixalate.com/blog/q3-2023-global-mobile-seller-trust-index#) # Disclaimer Disclaimer: The content of this page reflects Pixalate’s opinions with respect to the factors that Pixalate believes can be useful to the digital media industry. 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