A million downloads don't mean a thing if you're still bleeding money. It feels like a win until you realize most of those users don't actually convert—they install, tap around, and then leave. This is where app CRO (conversion rate optimization) kicks in by removing any friction between apps users discovering your app in the store and making a purchase once they're inside the app. Simply calculate conversions ÷ total visitors × 100 to understand exactly where your money's walking out the door. Pay attention to app store assets, onboarding, paywalls, checkout flows, and in-app messaging. These are the common user drop-offs that, when streamlined, improve a costly chokepoint where users bail in your app funnel.
Here's what drives the problem home:
- Downloads ≠ revenue. Land thousands of installs but your MRR stays flat? Those users aren't converting.
- Friction compounds. Each step from discovery to purchase is a chance to lose someone—and most apps don't measure it.
- The leaks are fixable. CRO isn't magic — it's figuring out where people bail and fixing it, one test at a time.
It's honest, and that's why the formula works - you'll find your onboarding might be bleeding 40% of new users, or your paywall converts at 2% when it should be 5%. Once you have the numbers, you can plot a course for which funnel stage to fix first.
Akanksha Barma, App CRO growth specialist explains that she cared about CRO for mobile apps because there were some apps that had good downloads and cracked distribution, but weren't generating a lot of MRR because of a leaky bucket. - Akanksha Barma, App CRO growth specialist.
This is where having the right specialist goes a long way.
Mobile app CRO is an area of expertise for four agencies. Conversion Rate Store specializes in in-app monetization experiments, such as testing paywalls, subscriptions, and ARPU. We’ve seen them produce results like a 46.9% conversion lift on a subscription upgrade screen. Meanwhile, Moburst is a leader when it comes to app store creative testing and Custom Product Pages, running as many as 35 unique variants for one app. Admiral Media, another mobile app growth agency, tests paywalls and app store listings, but also onboarding. They then rank tests by impact and ease of implementation. Netpeak USA does everything from app store creative testing to sequences of push notifications, personalized paywalls, and in-app tutorials. Two other mobile app CRO agencies worth noting are Conversion and NinjaPromo. They may be helpful if you’re also running early-stage UX analyses or user research alongside an app’s funnel experiments.
Conversion Rate Store
These experiments primarily focus on the screens where users actually hand over money to the app. It could be their paywall, upgrade page, or checkout screen. Take the golf app SwingU, for example. They ran experiments that helped them increase subscription upgrade conversion rate by 46.9% and raised average revenue per user by 49.41%. For apps that have an IAP or subscription model and are looking for someone keen on fine-tuning monetization or upgrade mechanics, this would be their line of expertise.
Moburst
Focuses on CRO from an app store optimization perspective and experiments with in-app and app store skills - copy, screenshots, videos, icons, colors. The "big" play is creating Custom Product Pages (CPPs) that cater to various user segments, with a maximum of 35 pages per app. If you want to associate the quality of your organic app store installs with your app store conversion, or are considering revamping your app listing, Moburst is a potential choice.
Admiral Media
These folks are crazy about ruthless prioritization. Look for the biggest single drop off in your funnel. Test that first. When it comes to prioritizing their experiments by onboarding screens, store listings, and paywalls, they rank tests by how much impact they expect them to have and how difficult they are to ship. First are low effort but could have meaningful impact. This keeps them from wasting their time on low probability opportunities.
They do full funnel work—from app store creatives to onboarding tutorials, push reminders, and personalized paywalls. Their expertise is well-suited for an app that wants one shop to handle the entire journey from install to first purchase.
Conversion and NinjaPromo
I'm bringing these up because you should know them. They're not pure-play CRO agencies though. Conversion focuses on behavioral research, collaborative product experimentation, and UX and conversion testing. NinjaPromo focuses on mobile app, in-app, and onboarding experience, in-app navigation and usability, and app-user retention and engagement. Neither one is pure CRO, but if you're still figuring out your core flow, that's actually fine—they pair well with conversion work.
The right pick depends on where your funnel breaks first. Which we'll dig into next.
Associating the right CRO partner very much depends on where your funnel breaks down. If you're spending a lot of money to get someone's initial subscription or paywall conversion, then you'll want to choose someone who's very obsessed with in-app monetization, like the Conversion Rate Store or Netpeak USA -- they'll stress-test every point from the initial offer all the way down to checkout. Are you doing paid user acquisition? I'd point you toward Conversion or Admiral Media which are going to tie your acquisition campaigns directly to downstream funnel experimentation so you can see who you're actually spending money on that's clicking and converting. Is your funnel breaking down when it comes to app store visibility? RadASO or Moburst specialize in creative iteration and other high-scale ASO-led testing. And are you just starting your app journey and mapping out your onboarding flow? I'd suggest NinjaPromo -- their strength is in UX analysis before you get into heavy A/B testing. Most founders go the opposite direction. They'll hire the agency, then map out their funnel. But if you don't know where your biggest drop-off really lies before picking a partner, you'll potentially pay for expertise you don't even need yet.
Q: Need end-to-end in-app CRO (paywalls, subscriptions, ARPU)?
Conversion Rate Store or Netpeak USA. These teams will dig into the paywall and the subscription funnel, ARPU, the stuff that actually makes you money.
Q: Is app store conversion and ASO-led testing a priority?
Moburst and RadASO. They offer creative testing at scale and also specialize in store listing optimization, where small design and copy changes can help increase install conversion.
Q: Running paid UA and want funnel experiments tied to acquisition?
Admiral Media or Conversion. Either solution will connect your ad spend to downstream behavior, so you won't just be buying installs, but the right installs.
Q: In the early stages and looking for analysis of your onboarding process / UX before investing heavily in tests?
NinjaPromo. They audit your onboarding process and bring friction to light before you spend time on structured experiments.
First, figure out which stage is leaking the most conversions. That clarity can make the hiring decision much more straightforward rather than a total guess.
A few things that make a rock solid testing strategy include: basing subject hypotheses on a well-thought-out theory based on past experience and solid insights into user behavior, testing one variant at a time so you can actually prove which change moved the needle, prioritizing tests based on their potential impact vs. time needed to set up, and running tests for at least 7 days to understand how users behave across the entire week and as weekends can hugely impact behavior. Nail these and you'll spend less time on low-signal experiments, ship experiments faster, and feel confident that the changes impact overall conversions.
Start every test with a hypothesis based on observation. Per Moburst, this means looking at the places you see high levels of user drop-off, review comments that point to friction, or friction spots in session replay analysis–not just guessing. While this sounds like common sense, it's not. When left to their own devices, most teams will start testing copy and colors without a real understanding of what's causing friction. This is the difference between testing things that feel smart and testing things that actually are.
Here's how the best teams structure their testing workflow:
- Isolate one structural change so causality stays clean—you'll actually know what moved the needle and you can do it again
- Prioritize by impact × ease—high-leverage, low-effort tests ship first
- Run for at least 7 days to capture weekend behavior variance
"Low effort, high impact for the app developers, making it a win win" — Akanksha Barma, App CRO growth specialist describes helping app developers setup A/B tests the right way while leveraging different monetization levers
It'll take shipping the easy, high-impact ones first—and they'll ship quickly before the heavier lifts even launch. That momentum compounds and sets you up in a great spot to tackle the bigger revenue leaks. That's where most teams leave money on the table — with paywalls.
You might be putting off your paywall because it feels like a blatant ask, but 52% of paid conversions happen during onboarding. The founders also make the mistake of launching a paywall with no psychological setup. A transitional screen with the right animation can increase conversions despite adding an extra step. When introduced too soon, generic pricing can cost you revenue because day-one users will be more willing to pay than day-thirty users. And one thing most apps skip on, but shouldn't, is a trust signal. A money-back guarantee banner on mobile increased conversion rate by 24% and ARPU by nearly 30%.
Problem: It can feel aggressive to show the paywall too early.
"One common myth is that showing paywall at the end of onboarding is too aggressive or not a good practice. That's opposite what the data says for paid conversions. 52% of the conversions happen during the onboarding journey" — Akanksha Barma, App CRO growth specialist
Solution: Send it immediately after they have experienced your core value. Day zero conversion events help reduce churn, especially for mid- to high-tier pricing.
Problem: The paywall hits without any context or signals that a free trial is initiated.
"Akanksha Barma, App CRO growth specialist found it surprising that adding a transition screen right before the paywall with a toggle animation to indicate 3 day free trial has been enabled for the user led to higher trial conversions, since it added an unnecessary extra step for the user but had opposite results — Akanksha Barma, App CRO growth specialist"
Here's the solution: Put up a transition screen where the toggle animates on and users are no longer seeing "paywall" but instead are seeing "free trial." Conversions go up.
Problem: You're charging customers the same price.
Solution: Offer a free trial or entry level pricing tier to someone on day 1, and show premium options to someone who's hooked on day 30. From there, adjust your price and offering to fit the customer's tenure.
Problem: There is no sign of any trust near the CTA.
Solution: On a golf app, a money-back guarantee banner lifted conversion rate by 24% and nearly 30% in ARPU. It's a revenue multiplier hiding in plain sight.
Primarily, you have two tracks: quick wins that can ship fast and with little to no development costs, and longer term bets that take more time to get a high volume of users but can shift your funnel. Quick wins include things like touchups to an app store icon, sequencing of screenshots, or metadata refreshes that produce measurable results within weeks. On the other end of the spectrum are things like restructures to onboarding, paywall redesigns, or personalization engines that take a longer time to get a significant volume of users but can significantly increase revenue.
Before launching either, map your conversion funnel and identify the largest single drop-off in the funnel. One major leak will cost far more than 10 optimizations could recover.
Quick Wins
- App store icon and screenshots — Conduct A/B tests for the messaging and visual hierarchy
- Metadata and keywords — Refresh without a code change, since app store algorithms constantly change
Long-Term Bets
- Onboarding restructure — High impact but requires weeks to get enough data for measurement
- Paywall redesign and pricing — Powerful but needs statistic significance to be measurable
- Personalization engine — Longer to build and measure
Here's the thing: most app owners chase features while their paywall strategy falls apart. Fixing the foundation first accelerates product-market fit way faster than shipping new functionality.
While app owners often have product feature ideas and positioning, they seem to have poor strategy when it comes to paywall pricing and placement. Helping them understand the right foundation can likely help them get product market fit — Akanksha Barma, App CRO growth specialist
Plug all your leaks. Then gain scale. That's where the right partner makes all the difference.
After completing your funnel map, and identifying where your conversions are dropping off, the next step is to decide who is going to fix the funnel — you (or your team), or a third party. The results you get from agencies versus in-house teams early on are pretty markedly different. While in-house teams are developing the infrastructure for CRO experiments, agencies have tested frameworks and have seen patterns across apps. This means that if you're building the infrastructure necessary to experiment on conversions, you can expect to hit ROI faster through an agency. An agency will effectively cut the learning curve. They have already run the tests you're about to run, on apps that look like yours. The tradeoffs here are pretty real. Yes: agencies cost money, upfront. But, spending months building internal experience can end up costing you both dollars and time (which you don't have). You also need the infrastructure to be able to run experiments and a dedicated experiment analyst. If you're pulling in 50+ downloads per app daily, and your monthly recurring revenue (MRR) seems to not be correlated — there's likely friction going on. This is when deep-dive CRO audits really come in handy — and this is what Appmaxxing does. We zoom out and look at the whole user journey, to identify leaks in revenue and narrow down where friction is being created and killing your conversions. It's worth noting that you're not just choosing a "good" or "bad" option here — you're choosing to have more control or speed.
Mobile CRO companies follow a repeatable 3-step process: they audit analytics and session recordings for drop-off points, create an impact-ease prioritized backlog of tests and edits, and run iterative tests (one change at a time). An early main driver for app revenue could be app store creatives, resolving which might yield some early wins within weeks. However, for real revenue movement, you'll generally see CRO work take 3-6 months.
Here's what I see happen in practice.
Step 1: The audit. An agency analyzes your analytics, session recordings, and store data. You're not guessing where users are bailing — you're watching them bail. ``
Step 2: Build your test plan. Admiral Media says to rank your test ideas based on confidence level, ease of implementation, and expected impact. Then, run easy-to-run, high-impact tests first. Only test one variable at a time.
Step 3: Run the tests. Iterative testing with clean measurement windows. No guesswork.
Keep in mind the timeline. For example, in Moburst's case study, they display that app store creative changes can see movement within weeks. Anything else, 3 to 6 months.
Admiral Media's program saw +66% paid installs, +32% purchases, and +42% net cohort revenue in its 15 months.
You're paying for a repeatable process that finds the leak — not guesswork.