Source: https://daphnislabs.com/case-studies/perb

# Perb

One gym. Two connected experiences

Native apps for the people running a gym and the members training there, connected through a Node.js backend.

[Read the story](https://daphnislabs.com/case-studies/perb#story)

![Member home feed — original interface design](https://daphnislabs.com/images/projects/perb/member-feed.webp)

## The project

Gym teams needed to keep track of attendance, expiring memberships and outstanding balances. For members, the product had to make fitness content and daily routines easy to reach. These different tasks shaped the product’s structure.

### About these images

Manager images are original onboarding screens supplied with the project. Member screens are cropped from the original interface design board. These are historical design assets, not captures from a running app; example dates and values are not adoption or fitness results.

**Industry**

Fitness & gym management

**Our role**

Backend development Native mobile app development

**Technology**

Node.js Kotlin Android

**Reported adoption**

Approximately 100 gyms active simultaneously Around 200 members per gym Owner-reported figures for the engagement period

## Manager app

Original onboarding screens introduce the gym’s administration tools. The Android implementation also includes a dedicated attendance list.

![Manager member profiles — original onboarding screen](https://daphnislabs.com/images/projects/perb/manager-members.webp)

### Member profiles

Open a member record, update its photograph and access contact or chat actions.

![Manager memberships — original onboarding screen](https://daphnislabs.com/images/projects/perb/manager-memberships.webp)

### Memberships and payments

Choose a plan, enter a payment amount and method, and handle outstanding balances during renewal.

## Member app

The member app’s home feed brings fitness posts and exercise videos together, with comments on individual posts.

![Workout day selection — original interface design](https://daphnislabs.com/images/projects/perb/workout-days.webp)

### Plan the training week

The workout flow moves from exercise selection to choosing days, with a confirmation before copying a routine across the week.

![Meal entry and reminder — original interface design](https://daphnislabs.com/images/projects/perb/meal-reminder.webp)

### Set a meal reminder

Breakfast, snacks, lunch and dinner have their own entries, with a time field for the reminder.

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