At Mobulous, we understand that every business has unique priorities, timelines & strategic vision. We offer multiple engagement models to suit different project types - from startups to enterprises.
Well-defined scope, clear deliverables, short-to-medium term projects.
Evolving scope, iterative development, long-term enhancements
Ongoing development needs, product startups, in-house team extension
Projects with undefined scope, frequent enhancements, or phased upgrades.
Post-launch maintenance, upgrades, and monitoring.
Startups or businesses validating an idea before scaling.
Not Sure Which Model Fits?
How well-defined are your project requirements right now?
We understand that every business has unique goals, timelines, and budgets. That’s why we offer a variety of engagement models to suit your project’s specific needs.
A predetermined cost for the entire project scope with clear deliverables and timeline.
E-commerce mobile app for a retail chain with specific features: product catalog, shopping cart, payment integration, and user profiles. Timeline: 3 months
Flexible billing based on actual time spent and resources used during development.
Healthcare management system with regulatory compliance needs. Started with basic features, expanded to include telemedicine, patient portals, and AI diagnostics. Duration: 8 months.
A full-time dedicated team working exclusively on your project as an extension of your in-house team.
Fintech startup requiring a team of 8 developers (2 iOS, 2 Android, 2 Backend, 1 UI/UX, 1 QA) for 12 months to build a comprehensive banking app. Monthly fixed cost agreed for the entire team
Ongoing monthly support and development services for maintenance, updates, and enhancements.
Social media app requiring monthly updates, bug fixes, server maintenance, and new feature additions. 40 hours/month at fixed cost retainer.
Prepaid hourly blocks (e.g., 100/200/500 hours) that can be utilized flexibly for development, updates, bug fixes, or enhancements — without long-term commitment or rigid planning.
Best suited for projects like an eCommerce app requiring ongoing bug fixes, performance tweaks, and feature updates where scope isn't fixed and rapid turnaround is critical
Start with a fixed-cost MVP to launch quickly and validate your core product idea. After go-live, transition into an hourly block or T&M engagement model for incremental enhancements, user-driven iterations, and scaling
Healthcare management system with regulatory compliance needs. Started with basic features, expanded to include telemedicine, patient portals, and AI diagnostics. Duration: 8 months.
Side-by-Side Model Comparison
| Business Model | Price Structure | Flexibility | Risk Level | Timeline Predictability | Scope Control | Best For |
|---|---|---|---|---|---|---|
| Fixed-Price Model | Fixed per project/milestone | Low | Low | High | High | Well-defined short-to-medium projects, MVPs, static requirements |
| Time & Material Model | Hourly/monthly billing | High | Medium | Low–Medium | Low–Medium | Evolving products, Agile sprints, unclear scope or experimental features |
| Dedicated Team Model | Monthly per resource | Very High | Medium | Medium | Client Controlled | Long-term scaling, full product teams, in-house extension |
| Hourly Block Model | Prepaid hourly buckets | Medium–High | Low | Medium | Medium | Existing platforms with frequent updates, but no clear scope or budget limit |
| Retainer Model | Fixed monthly (support hrs) | Medium | Low | High | Medium | Post-launch support, monthly maintenance, incremental improvements |
| MVP-to-Hourly Transition Model | Phase 1: Fixed, Phase 2: Hourly | High | Low (Phase 1), Medium (Phase 2) | High (Phase 1), Medium (Phase 2) | High (initial), Flexible post-launch | Startups validating ideas, short MVP launch followed by agile scaling |
Mobile App Development Cost
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Expertise Across Domains
HIPAA-compliant apps, patient management systems, telemedicine platforms, medical record management
Digital banking solutions, payment gateways, cryptocurrency apps, investment platforms
Online marketplaces, inventory management, customer loyalty programs, AR shopping experiences
Learning management systems, virtual classrooms, educational games, skill assessment platforms
Ride-sharing apps, fleet management, delivery tracking, route optimization solutions
Property management, virtual tours, real estate marketplaces, smart home integration
Proven Success Stories
Model Used: Time and Material Model
Challenge: BuildRight needed a flexible and scalable software solution to manage their on-site construction projects, including task tracking, contractor scheduling, equipment logs, and real-time reporting. Due to evolving site conditions and compliance requirements, the exact scope was expected to change frequently during development.
Solution: Using the Time and Material model, we allocated a dedicated team that worked in close coordination with BuildRight’s internal operations team. The iterative approach allowed for regular scope refinements, on-site feedback incorporation, and gradual feature roll outs aligned with project needs.
Result: 50% reduction in project tracking errors, real-time visibility across 12 active sites, and improved compliance documentation flow. The client continues to expand the product for other business units.
Duration: Ongoing (initial launch in 4.5 months)
Model Used: Fixed-Price Model
Challenge: TechCorp needed a mobile app for their retail chain with specific features and a tight deadline for the holiday season.
Solution: We delivered a complete e-commerce app with product catalog, shopping cart, payment integration, and customer profiles within the agreed timeline and budget.
Result: 40% increase in online sales, 25,000+ app downloads in the first month, and seamless holiday season launch.
Duration: 3 months
Model Used: Dedicated Team Model
Challenge: FinEdge needed to build a secure, scalable digital lending platform to streamline loan origination, KYC, credit assessment, and disbursement. Their internal product vision was evolving, and they required full-time technical resources who could work as an extension of their in-house team.
Solution: We deployed a dedicated team comprising frontend and backend developers, a QA specialist, and a project manager. The team collaborated daily with FinEdge’s product stakeholders, adapting to changing requirements, ensuring security compliance, and accelerating development cycles without the overhead of fixed-scope constraints.
Result: Successfully launched the platform in 6 months with built-in integrations for Aadhaar eKYC, CIBIL score APIs, and Razorpay payouts. FinEdge saw a 3x faster loan approval process and onboarded 20,000+ users in the first 60 days.
Duration: 6 months (ongoing support and scaling in place)
Model Used: MVP Development → Time & Material
Challenge: As an early-stage startup, FoodieGo needed to launch a basic food delivery app quickly to validate its business model in select urban markets. The founders required an MVP with core features on a tight budget and timeline, with the flexibility to scale post-launch based on user feedback and traction.
Solution: We started with an MVP development model, delivering a lightweight app with restaurant listings, order placement, and basic delivery tracking within 6 weeks. Once the MVP gained traction, we transitioned to a Time & Material engagement to support continuous enhancements including loyalty programs, real-time delivery tracking, in-app chat, and analytics dashboards.
Result: Achieved product-market fit within 3 months of launch. The app scaled to 300+ partner restaurants, processed over 50,000 orders in the first quarter, and secured seed funding based on the working MVP and growth metrics.
Duration: MVP – 10 weeks | Continuous Development – Ongoing
Tools That Power Our Solutions
Your Vision, Our Proven Workflow
We strive to develop real-world web solutions that are ideal for small to large projects with bespoke project requirements web solutions that are ideal.
What to Expect Based on Your App Idea
A quick reference to estimate development timelines based on app complexity — from basic MVPs to full-scale enterprise solutions.
Straightforward apps with basic functionality, minimal backend, and limited user interaction.
Multi-role platforms with dynamic features, real-time tracking, API integrations, and admin control.
Large-scale, customizable systems with deep integrations, analytics, workflows, and multi-department modules.
Still Not Sure?
Our team will listen to your idea, recommend the right pricing model, and give you a ballpark estimate — no commitment required.
We respond to every request personally · NDA protected · Free consultation
Let's explore ways we can assist you
Which pricing model is best for app development?
Time and Materials is the best pricing model for most app projects.
Here's what each model means:
Why Time and Materials works best:
When to use other models:
Most apps go through changes as you build them. Time and Materials lets you adapt without fighting over extra costs.
Mobile app development fixed price vs hourly - which is better?
Fixed Price
Hourly Billing
Compare software development engagement models - what are the differences?
Fixed Price Model
Hourly Model
Retainer Model
Dedicated Team Model
How to hire developers on a retainer model?
1. Calculate how many hours you need per month
2. Negotiate monthly fee (usually 10-20% less than hourly rate)
3. Set clear expectations for work included
4. Good for maintenance and small features
MVP to hourly billing model for startups - how does this work?
For MVP (First Version)
After MVP Launch
Which pricing model is best for app development?
Choose Fixed Price If:
Choose Hourly If:
Choose Retainer If:
Choose Dedicated Team If:
Flexible pricing models for web development - what options exist?
Phase-Based Pricing
Feature-Based Pricing
Outsourcing app development with dedicated team - when to use?
When to Use:
Benefits:
Costs:
Choosing the right business model for your tech project - quick decision guide
When to Use:
1. Simple project + Clear requirements = Fixed Price
2. Complex project + Changing requirements = Hourly
3.Ongoing work + Regular needs = Retainer
4. Large project + Long timeline = Dedicated Team
Cost Tips
Real reviews from real clients. 98+ verified reviews on Clutch with 4.7/5 average rating — validating our position as a top mobile app development company.