How long does it take to build a mobile app?

Most MVPs take 4-8 weeks from kickoff to launch. More complex apps with integrations, custom backends, or compliance requirements typically take 14-20 weeks. We'll give you a realistic timeline during our initial consultation — we don't overpromise to win the deal.

How much does mobile app development cost?

We offer competitive European rates without compromising on quality: Simple apps (basic features, single platform): ~$9,360 – $17,550 Medium complexity (user accounts, payments, API integrations): ~$17,550 – $40,950 Complex apps (real-time features, multiple integrations, admin dashboards): ~$40,950 – $70,200 Enterprise solutions (compliance requirements, advanced security, legacy system integration): $70,200+ We provide detailed fixed-price quotes after understanding your requirements, no surprises in the middle of the project. With 13+ years of experience and 300+ delivered projects, we know how to scope accurately.

Do you build for both iOS and Android?

Yes. We typically use cross-platform frameworks like React Native or Flutter, which let us build for both platforms simultaneously. This reduces cost and development time by 30-40% compared to building two separate native apps.

What industries do you work with?

We don't specialize in one industry. Over the past 13 years we've built apps for e-commerce stores, SaaS startups, HR companies, hotels, B2B platforms, and more. If you need a mobile app, a web platform, or custom software that actually works in production, we can probably help. The common thread is clients who need reliable delivery, not the cheapest quote.

What does your development process look like?

We work in 2-week sprints. At the end of each sprint, you see working software, not slides or mockups. You'll have a dedicated point of contact, access to our project management tools, and bi-weekly demo calls. No disappearing for months and hoping for the best.

Will I own the source code?

Yes, 100%. You own everything we build including source code, documentation, designs, deployment configurations. No licensing fees, no lock-in. If you want to take the code to another team tomorrow, you can.

How do you handle communication?

You'll have direct access to the engineers working on your project and not just a project manager relaying messages. We use Slack for day-to-day communication and scheduled video calls for demos and planning. Most questions get answered within a few hours during business hours.

What if I need changes after launch?

We offer ongoing support and maintenance packages, but you're not locked in. Since you own the code and we document everything, any competent development team can pick up where we left off.

What technologies do you use?

Mobile:React Native, Flutter, Swift (iOS), Kotlin (Android), Unity Engine and sometimes just WebView Web: PHP ,React, Next.js, Node.js, Python Backend: AWS, Google Cloud, PostgreSQL, MongoDB We choose the stack based on your needs, not what's trendy. We'll recommend what makes sense for your timeline, budget, and long-term maintenance.

Can you work with our existing codebase?

Yes. We regularly take over projects from other teams. We'll start with a code audit to assess what's salvageable and what needs rebuilding. We'll be honest sometimes it's faster to rebuild than to fix.

Do you handle UI/UX design?

Yes. Our design team handles user research, wireframes, prototypes, and final UI design. Good design isn't optional apps that look dated or are hard to use don't get traction, no matter how solid the code is.

How do you ensure app security?

Security is built into our process, not bolted on at the end. We use encryption for data at rest and in transit, secure authentication, and follow OWASP guidelines. For healthcare or financial apps, we can implement HIPAA or PCI-DSS or WCAG or GDPR compliance requirements.

How do I know if we're a good fit?

We work best with clients who: - Have a clear business problem they're trying to solve - Are ready to invest in quality (not looking for the cheapest option) - Want to be involved in the process, not just hand off requirements and disappear - Need software that works reliably in production

What do you need from me to get started?

For an initial consultation, just a rough idea of what you want to build and your goals. We'll ask questions to fill in the gaps. For a formal proposal, we'll need more detail but we'll guide you through that process.

How do I get a quote?

[Contact us](/contact) with a brief description of your project. We'll schedule a 30-minute call to understand your needs, then follow up with a detailed proposal within 3-5 business days.

What if I'm not happy with the work?

We demo working software every two weeks. If something isn't right, we catch it early and fix it not three months later when it's expensive to change. If there's ever a fundamental disagreement, you own the code and can walk away.

What if my requirements change mid-project?

They will, that's normal. Our sprint-based process is designed for this. We'll discuss the impact on timeline and budget, and you decide whether to proceed. No change requests disappear into a black hole.

What happens if a key team member leaves?

We have engineering teams across multiple locations and other regions, so there's always someone ready to step in. We document everything properly and use standard code practices, so knowledge doesn't get stuck in one person's head. In 13 years, we've never had a project stall because of team changes.

How does pricing work?

We offer two models: 1) Fixed-price projects: Best for well-defined scopes. You know the total cost upfront. 2) Time & materials: Best for evolving projects. You pay for actual hours worked, with full transparency. Most clients start with fixed-price for the MVP, then move to time & materials for ongoing development.

What are your payment terms?

Typically 30-40% upfront, with remaining payments tied to milestones. We don't ask for 100% upfront, and we don't invoice for work you haven't seen.

Do you offer payment plans?

Yes. We can structure payments across the project timeline to help with cash flow. Let's discuss what works for your situation.

Privacy Policy

Effective Date: January 1, 2025

Five Quantum Bits ("we," "us," "our") commits to protecting user privacy. This policy explains how information is collected, used, disclosed, and safeguarded when browsing the website or engaging services. Users who disagree should not use the Services. Questions can be directed to pavel@fiveqb.com.

1. INFORMATION COLLECTION

Personal Information Provided by Users

The company collects information voluntarily submitted, including:

Name
Billing Address
Telephone Number
Job Title
Email Address
Username
Password

Business Information

As a software development firm, Five Quantum Bits may collect project specifications, source code, and technical documentation.

Sensitive Information

The company explicitly does not process sensitive data such as social security numbers, credit card or bank account numbers, health and medical data, or criminal background checks.

All provided information must be accurate, complete, and current.

Automatically Collected Information

The system automatically collects device and usage information including IP addresses, browser characteristics, operating systems, language preferences, and technical details necessary for Services maintenance and analytics.

2. INFORMATION USE

Information is utilized for:

Service Provision: Account creation, access management, and inquiry responses

Customer Support: Issue resolution and assistance

Administrative Communication: Product updates, policy changes, and related notices

Billing and Transactions: Third-party payment processors like Stripe handle transactions securely; payment information goes directly to processors bound by PCI DSS standards

Service Enhancement: Quality improvement, trend analysis, and feature development

Legal Compliance: Meeting obligations and defending legal rights

Marketing: Promotional campaigns aligned with user preferences

Mobile phone numbers used for SMS messaging are not shared with third parties or used for promotional purposes without consent.

3. LEGAL BASIS FOR PROCESSING

Processing occurs only when necessary with valid legal reasons under applicable law, including user consent, legal compliance, contractual obligations, or legitimate business interests.

Canada: Processing requires express consent or implied permission; users can withdraw consent anytime.

European Union: GDPR compliance requires explicit consent for data collection and processing. Data handling follows lawful, fair, and transparent principles without adversely affecting user rights.

4. INFORMATION SHARING

Service Providers: Third-party vendors assisting with Services (payment processing, storage, development) receive information under confidentiality agreements restricting use to Five Quantum Bits services only.

Legal Compliance: Disclosure occurs if required by law, subpoena, or to protect rights and safety.

5. COOKIES AND TRACKING TECHNOLOGIES

Cookies and similar technologies maintain security, prevent crashes, fix bugs, save preferences, and assist basic functions. Online data partners may associate activities with personal information for marketing communications.

EU residents receive explicit consent requests before cookie usage per GDPR requirements, with withdrawal rights available.

6. DATA SECURITY MEASURES

The company employs commercially reasonable safeguards including encryption and secure access protocols. However, no system is completely foolproof.

EU residents receive breach notifications affecting rights and freedoms per GDPR requirements.

7. INFORMATION RETENTION

Personal information is retained while accounts remain active or Services are needed, plus longer if legally required. Information is deleted or anonymized when no legitimate business need exists, or securely stored if deletion is impossible.

8. MINOR INFORMATION COLLECTION

Services target adults only. The company doesn't knowingly collect minors' information under 18. Child accounts discovered are deactivated and deleted promptly.

9. PRIVACY RIGHTS

Users can review, change, or terminate accounts depending on residency.

Canada and Other Regions: Users may request access, rectification, erasure, processing restriction, data portability, and protection from automated decision-making.

European Union: GDPR provides additional rights including the "right to be forgotten," data portability, and automated decision-making information. Users can lodge complaints with supervisory authorities for alleged breaches.

Consent Withdrawal: Users relying on consent can withdraw anytime, though prior processing remains lawful.

Marketing Opt-Out: Users can unsubscribe from promotional communications via email unsubscribe links or direct contact.

Questions about privacy rights: pavel@fiveqb.com

10. DO-NOT-TRACK CONTROLS

No uniform technology standard exists for recognizing DNT signals. Five Quantum Bits currently doesn't respond to DNT browser signals or similar mechanisms.

11. U.S. RESIDENT PRIVACY RIGHTS

Residents of California, Colorado, Connecticut, Delaware, Florida, Indiana, Iowa, Kentucky, Montana, New Hampshire, New Jersey, Oregon, Tennessee, Texas, Utah, or Virginia may request access details, correct inaccuracies, obtain copies, or delete personal information (subject to applicable law limitations).

Categories of Collected Personal Information (Past 12 Months)

Category	Examples	Collected
A. Identifiers	Contact details, postal address, email, phone, IP address, account name	Yes
B. Customer Records	Name, contact, education, employment, financial information	Yes
C. Protected Classifications	Gender, age, race, ethnicity, national origin	No
D. Commercial Information	Transactions, purchase history, financial details, payment info	Yes
E. Biometric Information	Fingerprints, voice prints	No
F. Internet Activity	Browsing history, search history, online behavior, interactions	Yes
G. Geolocation Data	Device location	Yes
H. Sensory Information	Images, audio, video from business activities	No
I. Employment Information	Business contact, job title, work history, qualifications	Yes
J. Education Information	Student records, directory information	No
K. Inferences	Profiles based on collected information	No
L. Sensitive Personal Information	SSN, credit cards, health data, background checks	Yes

Additional personal information may be collected through customer support, in-person interactions, or service delivery.

Data Use and Retention: Information is used and retained as needed for Services as long as accounts remain active.

Disclosure: The company has not disclosed, sold, or shared personal information for business or commercial purposes and will not sell or share visitor, user, or customer information.

User Rights

U.S. state data protection laws provide non-absolute rights. These include:

Right to Know: Whether personal data is processed
Right to Access: Your personal data
Right to Correct: Inaccurate data
Right to Obtain a Copy: Previously shared data
Right to Non-Discrimination: For exercising rights
Right to Opt Out: Targeted advertising, data sales, or profiling with legal/significant effects

Exercising Rights

Contact for rights requests:

Five Quantum Bits

Email: pavel@fiveqb.com

Phone: 1 (206) 235-4955

Mailing Address: 600 University St Suite 177 Seattle, WA 98101

California "Shine the Light" Law

California Civil Code Section 1798.83 allows California residents to request information about personal information disclosed to third parties for direct marketing annually, free of charge.

12. RECRUITING POLICIES

Five Quantum Bits collects and processes job applicant personal information to manage recruitment, directly or through third-party services.

Collected Recruitment Information:

Contact details (name, address, email, telephone)
Professional qualifications (resume, cover letter, education, certifications)
Employment history
References and application information
Interview and screening information
Background checks (where legally permitted)

Recruitment Information Use:

Assess skills, qualifications, and role suitability
Conduct background and reference checks
Communicate about recruitment processes
Maintain hiring process records
Comply with legal/regulatory requirements

Recruitment Information Retention:

Data is retained as long as necessary for stated purposes, including legal/accounting/reporting requirements. Unsuccessful applicants' data may be retained for future opportunities.

Applicant Rights:

Job applicants and consultants possess the same information rights as users and customers, including access, correction, and deletion requests. Contact pavel@fiveqb.com for inquiries.

13. POLICY CHANGES

The company may update this policy periodically. Changes are posted with revised effective dates. Users are encouraged to review periodically.

14. CONTACT INFORMATION

For questions, concerns, reviews, updates, or deletions:

Five Quantum Bits

Email: pavel@fiveqb.com

Phone: 1 (206) 235-4955

Mailing Address: 600 University St Suite 177 Seattle, WA 98101

Five Quantum Bits is a software engineering company delivering production-grade mobile and backend systems for public institutions and growing businesses. Building Tomorrow’s Software, Today.