What to Prepare Before Buying Traffic for a Mobile App: A Practical Team Checklist

Partner material: this article was prepared in collaboration with CrazyFB Shop.

The good news is that you do not need a huge setup with dozens of tools before your first campaign.

You mainly need clear answers to a few basic questions.

Where does the user go after clicking the ad?

What will they see?

What do you want them to do?

How will the team know whether the campaign worked?

And what happens if something goes wrong?

If those answers are clear, launching traffic becomes much easier.

First, make sure the app is actually ready for more users

This sounds obvious, but teams sometimes start advertising too early.

The app has passed review.

It is live on the App Store.

Everyone wants to get the first real users as quickly as possible.

Then traffic starts coming in and the team discovers that registration sometimes freezes, one button does not work properly on a certain iOS version, or users do not know what to do after making a purchase.

Organic users may arrive slowly enough that these issues stay hidden.

Paid advertising speeds everything up.

The good things and the bad things.

If 2,000 people arrive in a day instead of 20, a small issue can become a serious one very quickly.

Before spending money on traffic, go through the full new-user journey several times yourself.

Not as a developer.

Not as a marketer.

As someone who first heard about the app five minutes ago.

Start with the ad and follow the user all the way through

Do not test only separate parts of the journey.

Test the whole thing.

Imagine a normal user experience.

Someone sees your ad on Instagram.

They tap it.

Open the App Store.

Look at the app page.

Install the app.

Launch it.

Create an account.

Try the main feature.

Reach the trial or payment step.

That is the journey the team needs to test.

Ideally more than once.

If different ads make different promises, test each one separately.

For example, the ad says:

“Try it free for 7 days.”

After installing the app, the user should quickly understand how to get those seven free days.

If they instead land on a normal payment screen with no mention of the offer, the ad and the product are already telling two different stories.

Your App Store page is part of the advertising

Some teams spend a week polishing an ad video and twenty minutes on the App Store page.

But that page is exactly where many users go after clicking.

The name.

The icon.

The screenshots.

The description.

The reviews.

The video, if there is one.

All of these continue the conversation that started in the ad.

If the ad promises one thing while the App Store page looks like it belongs to a different product, some users will leave before installing anything.

There is a very simple test.

Show the page to someone who knows nothing about the app.

Give them 10–15 seconds.

Then ask:

“What do you think this app does?”

If the answer is completely different from what the team expected, you have already found something worth fixing.

Check where the app is actually available

This is especially important when launching a new GEO.

The team prepares advertising for a new country.

Creatives are ready.

The campaign launches.

Only then does someone discover that the app is not available there.

This is easy to avoid.

Before launching a new market, open App Store Connect and check the country directly.

Do not rely on memory.

Do not assume it must already be enabled.

Take one minute and verify it.

Localization is more than translating the description

If you advertise in several countries, language needs to be checked throughout the entire user journey.

For example:

the ad is in Polish;

the App Store page is in Polish;

the app opens and half of the menu is in English;

the registration email arrives in another language;

then the push notification is Polish again.

Technically, everything works.

But the product feels unfinished.

Before buying traffic in a new GEO, check the whole sequence:

the ad;

App Store;

first launch;

registration;

system messages;

email;

push notifications;

payment;

support.

The user does not see these as separate departments inside your company.

To them, it is all one product.

Decide in advance what counts as a good result

One of the most important things before buying traffic is agreeing on what the team actually wants.

Not in general terms.

Specifically.

For example:

we do not only want an install — we want a registration.

Or:

we want the user to start a trial.

Or:

we want the first purchase.

Or:

we want the user to come back the next day.

Without this, it is very easy to judge campaigns by impressive but unimportant numbers.

One campaign may bring installs at $0.70.

Another may bring them at $1.50.

The first campaign looks much better.

Then the team looks deeper.

Only one out of every hundred users from the cheaper traffic buys a subscription.

Ten out of every hundred users from the more expensive traffic do.

Now the result looks completely different.

The real campaign goal has to connect advertising with what happens inside the app.

Do not try to measure everything

Once teams understand that installs are not enough, they sometimes go too far in the other direction.

They set up 50 events.

Track every button tap.

Build huge reports.

Then nobody looks at them.

At the beginning, choose a few actions that actually matter.

For example:

install → registration → trial → purchase.

Another app may use:

install → create project → complete first task → return next day.

The exact journey does not matter as much as understanding why each event is being measured.

If nobody knows why you are tracking a specific button, you probably do not need it yet.

Set up analytics before spending serious money

There is a painful but common scenario.

The campaign launches.

A few thousand dollars are spent in a week.

Installs come in.

Registrations seem to be happening too.

Then the team finally decides to analyze the results properly.

That is when they discover that several important events were never tracked.

Those missing historical events cannot be recreated.

So the order should be simple:

measurement first;

serious budget second.

You do not need perfect analytics from day one.

But the main actions should already be tracked before the first meaningful test.

Do not expect every number to match perfectly

Especially on iOS.

Modern mobile advertising works with privacy restrictions, which means different platforms can report slightly different numbers.

For a normal product team, the practical lesson is simple.

Do not panic if Meta reports 980 installs while another analytics platform reports 940.

The bigger question is what the full picture looks like.

How much did you spend?

How many users arrived?

How many registered?

How many completed the important action?

How many paid?

Does the whole chain make financial sense?

Those questions matter much more than forcing every dashboard to show the exact same number.

Understand the economics, even roughly

Before launching ads, you should have some idea of how much you can afford to pay for a user.

You do not need an advanced financial model.

Start with something simple.

The subscription costs $10.

After fees and other direct costs, the project receives around $7.

The average user stays for three months.

That gives roughly $21 in revenue after those direct costs.

This does not mean you can safely pay $20 for every new user.

You still have:

development;

support;

taxes;

tools;

salaries;

other costs.

But at least you have a starting point.

If a customer is worth $10 over their entire lifetime and it costs $30 to acquire them, you already know there is a problem.

Without this basic understanding, a team can easily fall into a strange situation:

the campaign is growing;

installs are increasing;

the charts look great;

but the business is losing more money every week.

Set a test budget before you launch

Another useful question is:

How much are we willing to spend on learning?

The first campaigns are rarely perfect.

The team is testing:

creatives;

audiences;

countries;

offers;

the App Store page;

pricing.

Some of the money will almost certainly be spent discovering what does not work.

Treat that as a test budget from the beginning.

Then an unsuccessful first campaign does not automatically mean “advertising does not work.”

You paid for information.

The real problem is paying for the same bad result again and again without learning anything from it.

Decide when a test should stop

This is more useful than it sounds.

Once a campaign is running, it becomes psychologically difficult to stop it.

You start thinking:

just a little longer;

one more day;

another $100;

maybe the algorithm will improve.

Sometimes a campaign really does need more time.

But decisions become easier if the rules were agreed before launch.

For example:

if a certain amount is spent and there are zero registrations, check the full user journey;

if users register but nobody starts a trial, look at the product experience;

if users start trials but nobody pays, review the offer or the product;

if acquisition cost is several times higher than the acceptable level, do not scale simply because installs are coming in.

You do not need a rigid mathematical system.

You mainly need to know when the team should stop spending and start investigating.

Prepare several creatives, not one “perfect” one

A team can spend a very long time making one ad video.

Everyone discusses it.

Moves the text around.

Changes the music.

Reworks the first two seconds ten times.

Finally, it launches.

It does not work.

Now the whole creative test is basically over.

It is usually better to start with several different ideas.

They do not all need to be expensive videos.

One creative can show the problem.

Another can show the product.

A third can focus on the result.

A fourth can show a clear use case.

That way, you are testing the message, not only the design.

Sometimes a simple creative made in one hour beats the polished video that took two weeks to approve.

Your ad should promise what the app actually delivers

This sounds obvious.

But this is exactly where teams sometimes make the offer sound a little better than reality.

For example:

“Get the result in 5 minutes.”

Then the user installs the app and has to register, complete a profile, confirm email, choose settings, and spend twenty minutes before seeing the promised result.

The ad brought the user in.

But the expectation has already been broken.

That user may still count as a successful install in your reports.

Then they delete the app.

Good advertising does not only attract attention.

It attracts people with the right expectation.

Check the first few minutes inside the app

The first few minutes matter even more for paid traffic.

The user did not spend a month researching your brand.

They saw the ad twenty seconds ago.

Their interest is still weak.

A long or confusing onboarding process can kill that interest very quickly.

Open the app as a new user and check:

is it obvious what to do;

can the user see the main value quickly;

are you asking too many questions immediately;

do you really need all that information right now;

is it clear why the app needs notifications, location, or another permission.

Every extra step should have a reason.

Do not ask for too much too early

Imagine a user has barely opened the app and is already asked to:

create an account;

enter their name;

provide a phone number;

add a date of birth;

choose a city;

enable notifications;

select interests;

add a bank card.

Each request may make sense on its own.

Together, they start to feel like a form.

Some information can often be requested later.

After the user already understands why the product is useful.

Test registration on real devices

A developer simulator is one thing.

A normal user’s phone is another.

Before sending meaningful traffic to the app, test at least a few real devices and iOS versions.

Especially the main steps:

installation;

first launch;

registration;

password recovery;

purchase;

returning to the app later.

You do not need to buy twenty iPhones.

But testing everything only on one developer device is risky too.

Check every link separately

This is a very simple issue that can ruin an entire campaign.

The ad contains the wrong link.

The button goes to an old page.

The deep link opens the app, but on the wrong screen.

A country uses the wrong localization.

The user lands on a 404 page.

Before launch, click every advertising link yourself.

On a phone.

Then continue through the journey.

It takes a few minutes.

If you use several GEOs, do not mix them into one result

Users in the US, Poland, and Brazil are not one audience just because they install the same app.

They may have different:

advertising costs;

languages;

purchasing power;

habits;

subscription prices;

competitors;

reactions to creatives.

At the beginning, it is more useful to understand each market separately.

Otherwise, one country with very cheap installs may make the total numbers look great while another market is responsible for almost all of the revenue.

Check the product from the target region

If your website, prices, offers, or product experience change depending on the country, test them from the relevant GEO.

This is where regional connections or mobile proxies may be useful.

But the same rule applies:

do not add another tool simply because it exists.

If everything is identical in every country, you may not need a separate regional connection at all.

If the product genuinely changes by region, the test becomes much more useful.

Organize advertising access before the team grows

Do not wait until five people are working on the campaign.

Decide in advance:

who controls Business Manager;

who owns the ad account;

who can manage the Page;

who adds new team members;

who handles payments;

who has full access.

Important assets should remain under the project’s control, while contractors receive only the access they need.

That way, changing an advertising specialist does not turn into a week of recovering accounts and permissions.

Check your Facebook Page and Instagram account

Even if Facebook is not a major content channel for the project, an empty business page can look strange.

At minimum, have:

a proper name;

a logo;

a description;

a link;

current information.

The same applies to Instagram.

Users sometimes open the profile after seeing an ad just to answer one question:

“Is this a real, active product?”

You do not need to post every day.

But the page should not look abandoned.

Sort out advertising payments before launch

The campaign finally starts working.

The team decides to scale it.

A few hours later, the payment fails.

The ads stop.

Now everyone is trying to find the person who knows which card is connected.

It is better to answer these questions earlier.

Who controls the payment method?

What is the limit?

Who receives alerts if something goes wrong?

What happens if the primary payment method is temporarily unavailable?

This is one of the boring parts of preparation.

Boring things become very interesting the moment they stop working.

Have one person looking at the full picture

In a small team, this may be the founder.

In a larger one, it may be the marketing lead or product manager.

The important thing is that at least one person looks at the whole chain:

advertising → install → registration → product usage → money.

The media buyer sees ads.

The developer sees the app.

The analyst sees data.

Support sees user complaints.

If nobody connects these pieces, every team can believe everything is fine.

For example:

the ads show a good CPI;

developers see no technical issues;

but support receives dozens of messages saying:

“I cannot figure out how to start the trial.”

That information may be more valuable than a beautiful advertising report.

Be ready for more support requests

If traffic grows five times, user questions may grow too.

Check:

where users can contact you;

whether support is easy to find;

who answers;

which languages are supported;

how long responses usually take;

whether common questions already have clear answers.

This is especially important for apps where users are paying money.

After payment, people become much less patient with:

“Your request will be reviewed within seven business days.”

Do not scale only because installs are coming in

One good day does not mean you have found a reliable acquisition channel.

Look at what users do next.

Do they come back?

Do they buy?

Do they cancel?

Do they use the app?

Are there refunds?

Sometimes the campaign has genuinely found a strong audience.

Sometimes it has only found people who like clicking attractive ads.

Those are not the same thing.

Look at user quality after launch

On day one, teams usually watch:

impressions;

clicks;

CTR;

CPI.

A few days later, the questions should change.

How many users registered?

How many reached the key action?

How many stayed?

How many paid?

A week later:

who came back;

who cancelled;

which GEO performed better;

which creative brought the most active users.

This is where advertising starts connecting with the actual product.

Do not be afraid to switch off what does not work

Teams sometimes become emotionally attached to an idea.

Especially after spending a lot of time on it.

“This video has to work.”

“This market is huge.”

“Our competitors advertise there.”

“Let’s give it a little more budget.”

But the campaign does not know how many hours went into the creative.

If the data repeatedly shows that an idea is not working, it is fine to switch it off.

That is not failure.

That is a normal test result.

You just learned where not to spend the next part of the budget.

Write down what you learned after each test

This sounds boring, but it can become more valuable than many tools.

After a test, write a short summary.

For example:

What we tested: Germany, three videos.

What worked: video #2 had the most expensive click but the strongest registration rate.

What did not work: video #1 generated many installs but almost nobody started a trial.

What we test next: two versions of video #2 plus a new App Store page.

After six months, the team starts building its own knowledge base.

Not a blog article.

Not somebody else’s advice.

Real data from your own product.

That eventually becomes one of the most valuable assets for future launches.

Final checklist before buying traffic

If you need a quick final check before launch, use this shorter list.

Product
— the app works;
— major issues are fixed;
— onboarding is clear;
— registration has been tested;
— purchase or subscription works.

App Store
— the app is available in the target countries;
— the description is up to date;
— screenshots match the current product;
— localization has been checked;
— the ad and the App Store page tell the same story.

Analytics
— key events are tracked;
— the team knows what counts as a conversion;
— everyone knows where to check results;
— advertising can be connected to actions inside the app.

Advertising
— several creatives are ready;
— all links have been checked;
— the first GEOs are selected;
— a test budget is defined;
— the team knows when a bad test should be stopped.

Infrastructure
— the ad account is under project control;
— access is organized;
— Facebook Page and Instagram are ready;
— payment methods have been checked;
— GEO connections or other working tools are ready if needed.

Team
— someone owns advertising;
— someone owns analytics;
— someone monitors payments;
— someone checks the product;
— someone answers users.

If the team can comfortably say “yes” to most of these points, you are ready to launch.