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Chall app

A web-based platform designed to make personal growth simple, structured, and engaging

My role:
product designer
Fields:
B2C, lifestyle
Year:
2025
ConceptFlowsDesign systemResearch

about product

Challenge App is a personal growth platform that helps people build sustainable habits through structured challenges.

The first MVP version focuses on validating key user needs and testing engagement patterns before scaling with more advanced features and business integrations

current pains

Through early research, we identified recurring pain points users face with existing habit-tracking tools:

  • Low motivation to maintain daily routines
  • Difficulty tracking progress across multiple goals
  • Overly complex or uninspiring productivity apps

Goals

  • Simplify the process of setting and maintaining habits
  • Provide clear insights into personal growth and consistency

Key screens

Below are the core screens that illustrate the main user flows and design principles behind the first MVP version

User story 1

A new user discovers the app while searching for a challenge-tracking service. Their goal is to quickly explore the features and determine whether the app fits their needs

Watch the user flow 1

User story 2

The user already knows they want to use this app — they came through a recommendation. Upon entering, they want to sign up right away and create a well-planned challenge

Watch the user flow 2

User story 3

The user already has two active challenges and one completed. They want to delete one active challenge due to changed circumstances and restart the completed one

Watch the user flow 3

User story 1

A new user discovers the app while searching for a challenge-tracking service. Their goal is to quickly explore the features and determine whether the app fits their needs

Watch the user flow 1

User story 2

The user already knows they want to use this app — they came through a recommendation. Upon entering, they want to sign up right away and create a well-planned challenge

Watch the user flow 2

User story 3

The user already has two active challenges and one completed. They want to delete one active challenge due to changed circumstances and restart the completed one

Watch the user flow 3

Logo

The logo reflects the idea of balanced emotional design: it feels engaging and human without being overloaded with graphic details.It sets a friendly, motivating tone that aligns with the app’s focus on personal growth and everyday progress

color system

Main colors

Color name

HEX code

green

#82f48f

light green

#c9f5bd

dark green

#3bcd5f

blue

#3c64d9

sky blue

#d1e1ff

mid blue

#75a0fc

black

white

Additional colors

Color name

HEX code

dark gray

#7d89a3

mid gray

#a7b2c9

cold gray

#c9d3e8

gray

#dde5f6

light gray

#f3f7ff

error

#e91b55

Typography

Font family: Inter

Titles

Type

Weight

Size

Line height

H1

bold

60 px

110%

H2

bold

40 px

110%

H3

bold

24 px

130%

H4

semibold

18 px

130%

Body

Type

Weight

Size

Line height

P1

regular

35 px

130%

P2

regular

20 px

140%

P3

regular

18 px

140%

P4

regular

13 px

150%

Components

Custom task planner

With custom tasks in days

Progress view in challenge

Statuses of days

Today

Done for the day

Missed day

Day in edit

Day with tasks

Future day

Buttons

Add tasks in all days

Delete all tasks

States of challenge preview

Pop-up, day settings

Calendar input

Elements

Pop-up, create account

Inputs

Today's day simple

Today's day with tasks

Today's day complete

Today's day free

Buttons

Primary

Hover

Disabled

Secondary

Hover

Disabled

Ghost

Hover

Disabled

Competitive Analysis

Category

Competitor

Type

Key Features

UX Observations

Strengths

Weaknesses

Habit & Challenge Apps
Fabulous
Direct
Web + mobile; guided routines, science-based habit system
Highly immersive storytelling UX
Emotional design, smooth onboarding
Limited flexibility, early paywall, long and complex onboarding
Habitica
Direct
Web + mobile; gamified habit tracking, quests
Engaging for gamers but dense UI
Fun, social mechanics
Overloaded interface
Everyday.app
Direct
Web + mobile; simple streak tracker
Calm and intuitive visuals
Clear progress visualization
Over-simplified experience, no customization for challenges, lacks social and motivational depth
Productivity Tools
Notion
Indirect
Web-first workspace, templates, habit dashboards
High flexibility, cognitive load
Full control over customization
Manual setup, not motivating
Todoist
Indirect
Web + mobile; recurring goals, integrations
Elegant, minimalist UX
Reliable, cross-platform
No gamification or emotion
Trello
Indirect
Web + mobile; Kanban boards, cards, lists, Power-Ups
Very intuitive for beginners; drag-and-drop board structure
Fast to adopt, low entry barrier
Limited depth for complex workflows, may require add-on

Category

Competitor

Type

Key Features

UX Observations

Strengths

Weaknesses

Habit & Challenge Apps
Fabulous
Direct
Web + mobile; guided routines, science-based habit system
Highly immersive storytelling UX
Emotional design, smooth onboarding
Limited flexibility, early paywall, long and complex onboarding
Habitica
Direct
Web + mobile; gamified habit tracking, quests
Engaging for gamers but dense UI
Fun, social mechanics
Overloaded interface
Everyday.app
Direct
Web + mobile; simple streak tracker
Calm and intuitive visuals
Clear progress visualization
Over-simplified experience, no customization for challenges, lacks social and motivational depth
Productivity Tools
Notion
Indirect
Web-first workspace, templates, habit dashboards
High flexibility, cognitive load
Full control over customization
Manual setup, not motivating
Todoist
Indirect
Web + mobile; recurring goals, integrations
Elegant, minimalist UX
Reliable, cross-platform
No gamification or emotion
Trello
Indirect
Web + mobile; Kanban boards, cards, lists, Power-Ups
Very intuitive for beginners; drag-and-drop board structure
Fast to adopt, low entry barrier
Limited depth for complex workflows, may require add-on

Interviews

We conducted six in-depth interviews to understand what helps people stay consistent with habits. Participants highlighted the need for simplicity, flexibility, and clear progress tracking — areas where existing tools often fall short

Respondents
Age:
25-40
Gender:
50% male, 50% female
Count:
6 people
Quote 1
“Most apps feel too strict — I want to adjust challenges to my own pace”
Quote 2
“I lose motivation when I can’t clearly see my progress”
Quote 3
“I don’t need tons of stats — I just want small, visible wins every day”
Quote 4
“It’s frustrating when apps assume everyone’s goals are the same — I need more flexibility”
Quote 5
“Current tools are too complicated to keep using”

HYPOTHESES

Based on the research findings, the first MVP aims to test the following hypotheses:

A simple and friendly interface improves user engagement and reduces friction in daily use
Flexible challenge setup — users should be able to customize tasks and frequency, not just follow daily routines
Goal input and motivational phrase generation can increase commitment and make the experience more personalized as the product scales
Progress rewards will help sustain motivation over time
Smart notifications will encourage consistency and positive reinforcement