Mondiad VPN Campaign Case Study: 37% Lower CPA on iOS

Mondiad VPN Campaign Case Study: 37% Lower CPA on iOS

In this Mondiad VPN campaign case study, we break down how a media buyer running a VPN offer for US iOS users cut their cost per install by 37% — from $8 down to $5 — through a series of targeted optimisations.

Sometimes the difference between an average campaign and a high-performing one comes down to a few smart decisions.

Summary

• A media buyer ran a 2-month VPN install campaign targeting US mobile iOS users via In-Page Push. Starting CPA was ~$8/install.
• Performance improved by whitelisting top zones, automating rules to cut underperforming traffic, dropping weak creatives, excluding low-quality connections and browsers, and adding micro-bids for tighter cost control.
• CPA dropped to ~$5/install — a 37% improvement — volume and quality held steady throughout.

About the campaign

Our partner was an experienced media buyer running a VPN offer for users in the United States. To reach a mobile iOS audience, the campaign used the **In-Page Push** format.

The main goal was to maximise installs while keeping acquisition costs inside a profitable range. Trial and deposit were treated as secondary conversion priorities.

• Campaign duration April, May 2026
• Format: In-Page Push
• Vertical: VPN
• Targeting: United States, mobile iOS
• Bidding: CPM
• Initial budget: $200 daily
• Desired CPA: $5–$8 per install
• Conversion type: Install as the main goal; trial and deposit as secondary goals

On to optimisations

1. Identifying our best audience

The campaign started with a standard setup and an initial CPA of around $8 per install. To improve traffic quality, Mondiad built and applied a **whitelist of high-performing zones**, allowing more of the budget to be concentrated on sources that had already shown stronger conversion potential.

Mondiad optimizationi rules

At the same time, […]

Explore the full Mondiad case study and uncover the optimization tactics that drove these results, on our blog.