iOS App

Development for

Cognitive Skills Growing

Business Analysis services to



product value


positive user reviews on the App Store

4 months

for the complete product development cycle
Native iOS development
Mobile development

the client

A German-based company established in 2017 in Kerpen. The company is dedicated to creating educational mobile applications primarily targeting the U.S. and European markets.

Founders’ goals

During the COVID-19 pandemic, the surge in demand for educational games and related apps presented a unique opportunity. As a provider of e-learning apps, our client sought innovative ways to both engage their audience and boost revenue.
Upon conducting a thorough market analysis, the client decided to develop a mobile application for iOS and Android, with a focus on enhancing cognitive functions encompassing logic, memory, attention, language, and math. The app was intended for adult users.


Our client had a strong Android app development team, yet faced a substantial hurdle due to the absence of iOS experts.
So the Founder turned to Gilzor, motivated by the previous positive experience in collaboration with us. He requested us to develop an iOS version of educational product from scratch.
Solution Development

Mobile Application Development

Weekly, we introduced new features, presented them to the client, and collected feedback.
This iterative approach guaranteed that the final product was aligned with the client's vision and fulfilled the users' needs.
Within four months, our team successfully developed an iOS mobile application. It contains a range of engaging features, including puzzles, IQ games, quiz games, and challenging questions to test users' logic and creativity.
The product utilizes a monetization strategy that includes in-app advertising and three subscription-based plans.
Solution Development

The app functionality

Brain games

Puzzles, math exercises, tests, and mental games for cognitive training.

Custom workouts

Personalized daily workouts generated by the app according to user needs and skills.


Payment charged to the iTunes account upon purchase confirmation.


Efficient onboarding for a speedy introduction to app features.

Subscription management

Control and management over subscriptions within the app. There are 3 types of subscriptions available to users: 1 month, 6 months, and 12 months with a different set of games and types of training.


Data analytics via Facebook, Firebase, and Amplitude.

Performance comparison

Progress tracking and the possibility of comparing results with people in the same age group.

In-app advertising

The showcase of targeted ads for product monetization.
Tech stack

Tech stack




Facebook SDK
Amplitude SDK
Firebase SDK
IronSource SDK

Support of payment methods

Apple Pay
Solution Development

Quality Assurance

To test the product, we undertook manual testing. To streamline the process, we adopted an authentic QA approach:

our development team


tested all functions



tasks to a QA


It caused a

60% reduction

in testing and

debugging time.

Solution Development

Time & Human Resources





The app was published on the App Store on the first attempt. In a mere 2 months post-launch, the product showcased the following results:
100+ positive user reviews on the Apple Store
Occupied a previously unexplored market niche
Shown stable performance, with consistent response times and minimal downtime.