Canonical: https://www.strataigize.com/tools/acquisition-comparison/ Description: Compare cost per install and new payer, separate media from other costs, and check cohort maturity. Free tool with a reproducible synthetic trial example. [Home](https://www.strataigize.com/) / [Free tools](https://www.strataigize.com/tools/) / Acquisition comparison App acquisition comparison # Cheaper installs can cost more per payer. Compare two campaigns using the same definition of a new payer and the same time to convert. [Compare your numbers](https://www.strataigize.com/tools/acquisition-comparison/#comparison) [Explore the synthetic cohort](https://www.strataigize.com/tools/acquisition-comparison/#cohort-example) Free · No email required · Calculations stay in your browser ## What does one new payer cost? Use unique people from each install cohort. Count their first payment within the selected number of days after install. Exclude returning subscribers and repeat payments. ## Give every trial the same time to convert. This separate example contains 200 invented trials in two cohorts. A starts October 1; B starts October 20. Each has 100 trials. Forty in each eventually pay within 14 days in the fixture. Move the observation cutoff. Future trial starts and future payments stay excluded until that date. “Fully observed” means the full 14-day window has passed, not that every possible future payment is known. At October 22, 50 of 200 starts have paid, or 25%. Of the 100 trials with a full 14 days, 40 paid within that window, or 40%. The difference reflects population and time, not measured improvement. [Use the Measurement Atlas](https://www.strataigize.com/resources/subscription-measurement-atlas/) to check the grouping rules in a vendor report. This worksheet uses its own fixed-window method and does not reproduce any vendor dashboard. - [Download the synthetic CSV](https://www.strataigize.com/downloads/subscription-cohort-example.csv) - [Reproduce with Python](https://www.strataigize.com/downloads/subscription-cohort-example.py) - [Read the method and limits](https://www.strataigize.com/downloads/subscription-cohort-example.md) ### Synthetic trial worksheet Observation cutoff, 00:00 UTC Fixed 14-day window. Payments exactly at day 14 count. All started trials, paid by cutoff 25%50 paid / 200 starts Fully observed trials, paid within 14 days 40%40 paid / 100 eligible starts Trials still short of the full window 100 Invented events after October 22 illustrate later calculations. They are not predictions. Refunds, retries, variable trial lengths and resubscriptions are outside this fixture. ## Keep the assumptions with the result. The CSV records your dates, currency, window, matching confirmation and maturity status alongside the arithmetic. Inputs and results are not saved by this tool or sent with its download. Download a copy before leaving the page. The site's normal consent-controlled analytics still apply. The synthetic acquisition example extends our [install and payer cost guide](https://www.strataigize.com/insights/understanding-the-costs-of-mobile-app-install-and-event-based-campaigns/). Campaign A has 5,000 installs and 50 new payers; B has 2,000 and 100. A costs less per install, while B costs less per payer. Changing B to 40 payers reverses the payer-cost comparison. For your own data, record the attribution click/view windows, reporting source and refund rule beside the CSV. Those settings cannot be inferred from aggregate counts. This AI-assisted tool provides arithmetic and a teaching example, not a causal experiment, forecast or automated spending recommendation. Buying help with measurement or acquisition? See our [app marketing scope](https://www.strataigize.com/services/mobile-app-marketing/) and use the [agency RFP](https://www.strataigize.com/resources/app-marketing-agency-rfp/) to compare proposals. You can use the full worksheet without contacting us.