Paid user acquisition for a mobile app is its own discipline, and the reason is measurement. The install is easy to buy and nearly meaningless on its own, the event that matters happens days or weeks later inside the app, and the platforms that report on performance are frequently the platforms selling the media. On top of that, the attribution ground has shifted repeatedly as both major mobile operating systems tightened what advertisers can see. An agency that has not worked through that will report installs, declare success and burn a budget. This page covers what the work consists of, how it is priced, and the questions that reveal whether a candidate has actually run apps.
Installs are not the goal and cost per install is not the metric
Buying installs cheaply is trivially easy and almost always the wrong objective. Incentivised traffic, low quality networks and broad audience expansion will all deliver a low cost per install and a cohort that never opens the app twice. The metric that matters is the value of a cohort measured at a fixed horizon, day seven and day thirty retention, and revenue or qualified action per install, compared against what you paid for that cohort. Ask any candidate which in app event they optimise toward and why, and ask what they would do in the first month if the volume of that event is too low for the platforms to learn from, which is the normal situation for a new app. A serious answer involves a staged approach, optimising toward an earlier proxy event first and moving deeper as volume allows. An answer about cost per install is a red flag.
Attribution, privacy and who holds the measurement
Mobile attribution now depends on a mix of platform provided frameworks, aggregated and delayed reporting, and a mobile measurement partner that sits between the ad networks and your app. Which measurement partner you use, who owns that contract, and how the postback configuration is set up are decisions with long consequences, and they should sit with you rather than with the agency. Ask a candidate which measurement partners they have implemented, how they handle the difference between what a network self reports and what the measurement partner attributes, and how they treat the aggregated privacy preserving reporting on iOS. Also ask what consent and disclosure they expect you to implement in the app itself, since data collection through an app carries obligations the Federal Trade Commission has written guidance about, and the developer, not the agency, carries them.
How the fee is structured and what it should include
Most app agencies charge either a percentage of media spend or a flat retainer, and the same misalignment applies as everywhere else: percentage of spend rewards spending more. Ask specifically whether creative production is inside the fee. In app advertising it is the largest recurring workload, because creative fatigue on the major channels is measured in weeks and a serious programme needs a steady supply of new video and playable variants. An agency that includes a fixed number of creative concepts per month, and says how many, is easier to hold to account than one that offers unlimited creative in the abstract. Separately, confirm who owns the finished creative and the source project files, whether music and stock licences transfer, and whether the ad accounts sit in your company's business manager rather than the agency's.
Where paid acquisition sits next to everything else
Paid media is one lever among several and it is the one that stops working the day you stop paying. Store listing optimisation, the title, subtitle, screenshots, description and the ratings and reviews that decide conversion from store visit to install, changes the effective cost of every install you buy and costs comparatively little. So does the onboarding flow, since a paid install that fails to activate is money spent on a churned user. This is why app marketing services are usually bought as a package rather than as media alone: an agency running acquisition without any influence over store conversion or first session experience is optimising the top of a leaking funnel. Ask candidates what they would change about your store listing before they spend anything, and whether they will measure store page conversion rate as a first class metric alongside cost per action.
Questions people ask about app advertising agency
What budget makes an app agency worth hiring?
The break point is usually where creative volume and channel count exceed what one internal person can produce and manage, rather than a specific spend figure. Below that, a competent operator with a good measurement setup will do fine. Ask candidates for the smallest account they currently run and what the fee is on it, and compare that fee against the cost of the internal hire it replaces.
Should we use the ad networks' own reported numbers?
Use them for optimisation inside each network and use a neutral measurement partner for allocation across networks. Self attributing networks each claim credit under their own rules and the totals will exceed reality when added up. Agreeing the single source of truth in advance, in writing, prevents the most common and most tedious argument in this discipline.
How long before a paid acquisition programme stabilises?
Expect several weeks per channel for the platforms to gather enough event data to optimise, plus the length of your retention window before a cohort can be judged. That usually means the first honest read on quality is somewhere in month two or three, not month one. Budget for a learning period explicitly rather than judging week one performance.
Who should own the creative produced for our campaigns?
You should, including editable source files, and the transfer should be written into the contract rather than assumed. Ask specifically about licences for music, stock footage and any voice talent, since those are frequently limited to a term or a channel and are the most common reason a company cannot legally keep running its best performing ad after a relationship ends.