How Ecomdy drove 1M+ installs for PDF Reader on TikTok Ads

In today’s competitive app landscape, success on TikTok Ads requires more than just creative videos; it demands data-driven strategies, precise audience targeting, and continuous optimization. This case study explores how Ecomdy Global Gaming, a leading TikTok agency in Vietnam, helped the PDF Reader app achieve outstanding results through a well-planned and expertly executed TikTok Ads campaign.

1. About the client - PDF Reader

PDF Reader is an Android app that allows users to view, scan, and manage PDF files easily. Targeting markets across LATAM, SEA, and MENA, the app sought to expand its user base through TikTok: one of the fastest-growing ad platforms for mobile apps.

However, the brand initially faced several challenges:

• No in-house creative or optimization team for TikTok Ads

• Limited experience in scaling campaigns internationally

• Need for high-quality ad creatives that resonate with diverse audiences

To address these issues, PDF Reader partnered with Ecomdy Global Gaming - TikTok’s official agency partner specializing in gaming and mobile apps.

2. Challenges

Before working with Ecomdy, the app team struggled to:

• Identify the right audience segments for different regions

• Maintain cost efficiency while scaling ad spend

• Produce localized ad videos optimized for TikTok trends

They needed an expert partner who could combine creative production, performance optimization, and data insights into one seamless solution.

3. Ecomdy’s strategy & solutions

Ecomdy Global Gaming implemented a full-stack TikTok advertising solution for the client, including:

Tailored market research

Ecomdy’s team conducted in-depth research across LATAM, SEA, and MENA to analyze user behaviors, app download trends, and ad content preferences.

This data allowed the team to identify high-performing audience clusters and craft localized creatives that appealed to each region.

Well-structured campaign planning

A detailed campaign architecture was designed to optimize for both performance and scalability. The structure focused on testing multiple creatives, refining audience targeting, and gradually increasing budget allocation to top-performing ad sets.

Video production by Ecomdy & TikTok One

Video is at the heart of TikTok’s success. Ecomdy collaborated with TikTok One and Pody.ai, TikTok’s creative partner network, to produce thumb-stopping ad videos featuring real-use scenarios of the PDF Reader app. Each creative emphasized usability, speed, and everyday convenience - key factors that resonate with mobile users.

Weekly 1-on-1 performance reviews

To ensure consistent results, Ecomdy held weekly performance reviews with the client. This allowed both teams to discuss data insights, creative feedback, and upcoming optimization opportunities — ensuring continuous growth and transparency.

4. Results

The partnership delivered remarkable outcomes within the campaign period:

• 196% ROAS, equivalent to a 32% growth compared to previous performance

• 1,037,079 installs generated at an impressive eCPI of $0.08

• $100,000 ad budget efficiently managed and optimized

• Expanded visibility across three international markets (LATAM, SEA, and MENA)

These numbers highlight not only the success of the campaign but also the scalability and cost-efficiency achievable through Ecomdy’s TikTok expertise.

5. Key takeaways

The campaign’s success demonstrates several critical lessons for mobile advertisers:

• Creative Localization Matters: Ads that reflect local culture and user habits drive stronger engagement and conversions.

• Data-Driven Decisions Win: Constant monitoring, A/B testing, and performance reviews lead to smarter budget allocation and higher ROAS.

• Collaborative Partnerships Boost Efficiency: The close collaboration between Ecomdy, TikTok One, and the client allowed for fast iteration and real-time optimization.

• TikTok Ads Work for Non-Gaming Apps Too: While gaming apps dominate the platform, this campaign proves that utility apps like PDF Reader can also thrive on TikTok with the right strategy.

6. Why choose Ecomdy Global Gaming

As an official TikTok agency partner, Ecomdy Global Gaming has deep expertise in user acquisition for mobile games and apps. Our team offers end-to-end support, including:

• Ad account provisioning

• Market and creative research

• Policy and compliance training

• Creative production and campaign management

• Weekly optimization and reporting

Whether you’re a startup app or a global gaming publisher, Ecomdy helps you scale effectively on TikTok with measurable ROI and sustainable growth.

Through a combination of creative storytelling, data-driven optimization, and close collaboration, Ecomdy Global Gaming helped PDF Reader achieve over 1 million installs and a 196% ROAS on TikTok Ads.

This case study proves that with the right partner, even utility apps can scale globally and cost-efficiently through TikTok’s powerful ad ecosystem.

Ready to grow your app with TikTok Ads? Visit Ecomdy Media or contact our team to explore customized solutions for your app’s growth.