[Explore other case studies](https://firebase.google.com/case-studies) [View more solutions](https://firebase.google.com/solutions) ![Mobills logo](https://firebase.google.com/static/images/appmakers/mobills.png)

##### Mobills increases subscriptions by 15% with Firebase Remote Config

![Phone device frame](https://firebase.google.com/static/images/usecases/device_frame_vertical.png) ![Mobills logo](https://firebase.google.com/static/images/usecases/mobills_screenshot.png)

*** ** * ** ***

##### Introduction

In 2013, two tech students from Brazil founded
[Mobills](https://www.mobills.com.br/), an easy-to-use personal
[finance app](https://play.google.com/store/apps/details?id=br.com.gerenciadorfinanceiro.controller)
that helps users control their expenses. Mobills makes it easy to
create budgets, record transactions, and track spending and
balances on the go. With more than 8 million downloads, Mobills
lets users manage over 1.5 million credit cards and tracks
purchases from more than 300 million companies and counting.

*** ** * ** ***

##### Challenge

When the team at Mobills wanted to increase their subscription
and registration conversion rates, they looked for ways to
improve their app. They identified two areas of opportunity: a
long, single-page registration form and a potentially unclear
CTA.

To see if spreading out the registration form over multiple
screens would increase conversions, they built a new version to
test against the original. They also tested the original
subscription CTA, "Assinar agora" ("Subscribe now"), against a
new version, "Seja premium" ("Become premium").
![Phone device frame](https://firebase.google.com/static/images/usecases/device_frame_vertical.png) ![Mobills logo](https://firebase.google.com/static/images/usecases/mobills_screenshot.png)

*** ** * ** ***

##### Solution

Using [Firebase A/B Testing](https://firebase.google.com/products/ab-testing)
and [Remote Config](https://firebase.google.com/products/remote-config),
the Mobills team was able to roll out the experiment to a
small set of users without republishing their app. Remote
Config allowed them to update the CTA and UI variants
dynamically, while A/B Testing gave them timely insights into
the results.

The experiments were a success. The new, multi-step
registration form led to a 2% higher conversion rate than the
original, while the new CTA increased subscriptions by a
whopping 15%.
After sharing the results with the rest of the company,
Mobills now empowers each staff member to run their own A/B
tests. Recently, they successfully used A/B testing to
optimize their checkout UI. Using Firebase, Mobills says they
can find solutions faster and keep improving their app's
performance.

*** ** * ** ***

Results

15% increase in subscriptions

2% increase in registrations
![Mobills logo](https://firebase.google.com/static/images/appmakers/mobills.png)
"Firebase has empowered our entire team to be more creative, because now we have a way to confidently and safely test our big ideas. It makes testing so easy that anyone on the team can run their own experiments."


- Igor Ronner, Head of Product, Mobills
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