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Case Study · Consumer Apps & Productivity Consumer Apps / Productivity
Hellory – smart reminder app for busy lives that keeps important moments on track
A cross-platform reminder and notification app that helps users stay on top of bills, tasks, events and life moments – with recurring reminders, templates and secure, reliable delivery.
Product type
Smart reminder & notification app
Platforms
Flutter mobile app (Android & iOS)
Region
India (global consumer audience)
Engagement
Concept → UX → Mobile app + API
Key outcome
Unified reminder experience for busy users
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Hellory – Smart Reminder App for Busy Lives India (remote-first collaboration)
About the client & context
About the client
When the client approached us with the Hellory Reminder project, they had a clear vision: create a personal assistant that would help users stay on top of their busy lives by providing seamless, flexible reminders across channels.
The goal was to build an intelligent reminder application that went beyond one-off alarms. Hellory needed to handle recurring reminders, flexible schedules, and different categories such as bills, events, habits and to-dos. At the same time, the team wanted a delightful mobile experience that felt approachable and trustworthy, especially for users who rely on the app for important life events. QalbIT partnered with the founders to turn this vision into a production-ready cross-platform mobile app backed by a secure API.
Consumer Apps / Productivity India (remote-first collaboration)
The challenge
The challenge
Before Hellory
Most users in the target audience juggled multiple reminder tools – phone alarms, simple to-do apps and ad-hoc notes. None of these provided a unified, context-aware reminder experience. The founders wanted Hellory to become a “single place to remember everything” without overwhelming users with complex settings.
This is often the point where generic tools and makeshift processes start to slow down growth. Our first step is to map the real-world workflows and understand where time is lost, where mistakes happen and what is blocking the team from scaling with confidence.
Goals & success criteria
Project goals & success criteria
Clear goals upfront help us make intentional trade-offs during UX and engineering, and define what “successful launch” actually means for the client team.
Business goals
Why the project matters to the businessLaunch Hellory as a flagship consumer app that clearly communicates its “smart reminder for busy lives” positioning.
Win early adopters through a polished, reliable mobile experience that encourages daily use and positive reviews.
Create a foundation for future monetisation models such as premium templates, categories or shared reminder spaces.
Collect anonymised product analytics to inform future roadmap decisions.
Product & technical goals
How we translate goals into product & architectureDesign a reminder UX that makes recurring schedules and categories easy to set up and manage.
Implement a robust scheduling engine that can handle thousands of reminder events per user without conflicts.
Support cross-platform mobile delivery using Flutter, backed by a secure Node.js / MongoDB API.
Integrate push notifications via Firebase Cloud Messaging while keeping battery usage and data consumption low.
Build an admin console to manage categories, templates, marketing content and feature flags.
Rollout approach
We aligned on an MVP scope that focused on core reminder workflows, then reserved more advanced automation and sharing features for later phases after the initial launch.
Our solution
Our solution
QalbIT designed and shipped Hellory as a cross-platform smart reminder app with a purpose-built scheduling engine and a clean, approachable mobile UX.
We began with user journey mapping, identifying the most common reminder scenarios – paying bills, health check-ups, recurring events and personal habits. These flows informed the information architecture and onboarding experience. On the technical side, we implemented a Node.js / Express API with a MongoDB data model optimised for recurring events and notification queues. The Flutter app communicates with this API through secure REST endpoints, while Firebase Cloud Messaging delivers push notifications across Android and iOS. An internal admin panel allows the team to manage categories, featured templates and in-app content without shipping new builds.
Product features & UX
Key product features & UX highlights
Everything users need to capture, organise and act on reminders – in one smart reminder app.
Recurring reminders & routines
Support for daily, weekly, monthly and custom schedules so users can set and forget regular tasks.
Reminder templates
Pre-built templates for bills, renewals, health check-ups and personal goals that reduce setup time.
Smart notifications & snooze
Push notifications with quick actions to mark done, snooze or reschedule without opening the full app.
Category & tag system
Colour-coded categories and tags so users can group reminders for work, home, finances, health and more.
Secure cloud sync
User data stored securely in the cloud with device-level encryption and protected APIs.
In-app tips & empty states
Guided content that helps new users understand how to get value from the app within the first session.
Marketing website
A supporting marketing site for Hellory with product storytelling, screenshots and app-store links.
Each feature is designed to slot into the team's existing workflows – with just enough structure to reduce errors, but not so much friction that adoption becomes a struggle.
Architecture & stack
Architecture & technology stack
The technology stack is deliberately simple, maintainable and aligned with the team's long-term roadmap — powerful enough for today's needs without locking the product into unnecessary complexity.
Backend & infrastructure
Reliability, security & maintainabilityNode.js / Express application layer modelling users, reminders, schedules and notification queues.
MongoDB database with schemas optimised for recurring events and efficient querying of upcoming reminders.
REST / JSON APIs secured with token-based authentication for the mobile apps.
Scheduling & worker processes that enqueue and dispatch notifications via Firebase Cloud Messaging.
Environment-specific configuration for staging and production with CI-driven deployments.
Frontend & UX
Clarity, speed & accessibilityFlutter codebase targeting Android and iOS with a shared component library.
Design system aligned with Hellory branding for typography, colour and motion.
Responsive marketing website built with HTML5, CSS and lightweight JavaScript.
Accessibility-minded layouts, including readable contrast and touch-friendly tap targets.
Flutter Node.js Express MongoDB REST APIs Firebase Cloud Messaging Git-based workflow
We favour stacks that your in-house team or future partners can understand and extend — with clear boundaries between frontend, backend and integrations so the product can evolve without constant rewrites.
Delivery process & collaboration
Delivery process & collaboration
We favour a transparent, iterative delivery model with enough structure to keep momentum, and enough flexibility to adjust as we learn from real usage.
- 01
Discovery & concept refinement
2 weeksClarified the product vision, user personas and priority reminder scenarios; translated ideas into a validated MVP scope.
- 02
UX flows & interface design
3 weeksDesigned onboarding, reminder creation, templates and notification flows using low-fidelity wireframes and high-fidelity screens.
- 03
Backend & mobile app development
6–7 weeksImplemented the Node.js / MongoDB API and Flutter mobile apps in parallel, with weekly demos and feedback loops.
- 04
Beta launch & refinement
3 weeksReleased a beta to a closed group of users, captured analytics and qualitative feedback, and refined templates and notification tuning.
- 05
Public launch & support
OngoingPrepared the app-store listings, launched publicly and continued improving reliability, performance and feature depth.
Each step includes regular demos, async updates and clear ownership so both teams know what is happening, what is blocked and what is coming next.
Results & impact
Results & impact
From scattered reminders to a single smart assistant for busy lives.
User adoption
Steady growth in active users after launch
A clear value proposition and smooth onboarding helped the app win and retain early adopters.
Reminder reliability
High success rate for scheduled notifications
The scheduling engine and infrastructure delivered reminders consistently across devices and time zones.
Engagement
Frequent repeat usage
Users returned regularly to manage routines, bills and personal goals through the app.
Product foundation
Platform ready for premium features
The architecture supports future monetisation, analytics and integrations without major rewrites.
Even when exact numbers are directional, we anchor results to the original project goals so stakeholders can clearly see what changed after launch.
Story behind the numbers
Launching Hellory as a polished reminder app helped the founders validate their idea with real users and establish a credible presence in the productivity space. With cross-platform apps, a reliable notification pipeline and structured analytics in place, the team now has a solid foundation to iterate on features, positioning and growth experiments.
“ Client perspective
“QalbIT helped us turn a broad idea — a reminder app for busy lives — into a focused product we could confidently ship. The team supported us across UX, mobile and backend, and the result feels both robust and user-friendly.”
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