Case study

Daily Effect: a training and diet app for personal trainers

Daily Effect trainers ran their clients through PDFs, messaging apps and spreadsheets, which stopped working as the community grew. We designed and built a Flutter training and diet app with a meal plan, training plan, measurements and community. We have been developing it since 2023.

4.9 from 1000+ reviewsGoogle PlayApp Store

120+

original recipes in the database

500+

exercises with instructional videos

Since 2023

ongoing partnership: development and maintenance

Together with the Daily Effect coaches, we moved work run on PDFs, messaging apps and spreadsheets into one mobile app: meal plan, training plan, progress tracking and a private community.

Product type
Mobile app
Market
Fitness and diet (B2C)
Year
2023 - w trakcie
Technologies
  • Flutter
  • Headless CMS
  • Node.js
  • Product Design
Key facts
  • Over 120 original recipes with calculated calorie counts
  • Over 500 exercises with instructional videos
  • A meal plan for the days ahead with a ready shopping list
  • A private community with challenges and competitions
  • Light and dark mode plus two colour variants
  • Working together since 2023, with the product in continuous development

We turned PDF plans, messages and spreadsheets into one app that tells you every day what to eat and which workout to do.

Daily Effect training and diet app on a phone during a workout

Goals

  • 01

    Everything in one place

    Replace files and several communication channels with an app where clients see the plan for the day straight away.

  • 02

    A personal approach at scale

    Keep diet and training tailored by the coaches as the number of clients grows.

  • 03

    Daily engagement

    Design a product that is simple to use every day and that people want to come back to.

Process

Empathize Define Ideate Design / Prototype & Delivery
  1. Product workshops
    Product workshops

    Workshops with the Daily Effect team and an analysis of existing plans, surveys and documents.

  2. Wireframing
    Wireframing

    Screen structure: daily plan, menu, workouts and habits.

  3. Rebranding
    Rebranding

    A refresh of the Daily Effect brand before the interface design.

  4. Hi-fi prototyping
    Hi-fi prototyping

    An interactive prototype to check navigation before development.

  5. Product design
    Product design

    An on-brand interface and simple navigation between the daily plan, menu, workouts and habits.

  6. Dev handoff and support
    Dev handoff and support

    A Flutter app with a design system built on variables and themes.

What we delivered

An app that guides clients through the whole day: from the meal plan, through the workout, to a progress summary.

  • Diet - a system that calculates daily calories and macronutrients, builds a meal plan from over 120 recipes and generates a shopping list.
  • Training - a plan matched to fitness level, several hundred workouts and over 500 exercises with instructional videos.
  • Progress - weekly weight and body measurements on charts, photo comparisons and points for daily activities.
  • Community - a private group with posts, comments, challenges and competitions, where the coaches answer questions.
  • Habits and knowledge - a habit calendar, morning messages from the coach, an evening reflection and educational videos.
  • Design system - components and themes: light and dark mode plus two colour variants that are easy to switch.

Challenge: clients managed in PDFs and spreadsheets

Daily Effect is the brand of coaches Marsi and Simonte, who have built a large, loyal community. They coached their clients with PDF plans, messages on messaging apps and spreadsheets.

As they grew, this model stopped being enough. The coaches picked meals and exercises individually, so the service couldn't scale quickly, and tracking progress was difficult. Clients wanted everything to hand on their phones.

The task was twofold: a product that is engaging and simple day to day, while keeping a personal coaching approach at scale.

Diet, recipe and shopping list screens in the Daily Effect app
Body, measurements and training plan screens

Solution: daily plan, diet and training in one app

The app answers one question: what do I need to do today to stick to the plan.

Diet and training are arranged automatically based on the goal and fitness level. Points for daily activities, the habit calendar and the private community reinforce consistency. The coaches see the discussions, answer questions and can adjust individual plans, so the personal contact with clients remains.

Design system and themes

We built the interface from components based on variables. As a result, the app works in light and dark mode and in two colour versions, new views are built from the same elements, and visual changes are made in one place.

Tiles with weight measurements and client progress photos
Community points ranking in the app dark theme

Results: one tool for trainers and their clients

The coaches guide their clients in one tool, and clients have their daily plan, progress and community on their phones.

We have been working together since 2023. Since launch, we have been adding new features and looking after maintenance, and the component-based design system shortens the time it takes to ship changes.

Design system components of the Daily Effect app

Written by Published Updated

„A great collaboration for over 2 years. The team is professional, punctual and genuinely committed to the development of the project. The app is polished and the communication is excellent. Highly recommended.”
Daily Effect Google review, translated from Polish · Full review

Clients coached through files and messages? That can become a product.

We start with a workshop where we agree the scope of the first version.

Let's talk