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Mobile app development

Mobile app development for Android and iOS

TechTenstein works from India on mobile apps that start with the task your users need to complete, not a long feature list. We can scope an Android or iOS application, design the core journey and build it through reviewable milestones.

Discuss this project ↗

Who this is for

Founders and teams with a specific mobile use case, a product owner and a budget for development and maintenance.

What we can scope

  • A prioritised MVP scope with platform and integration decisions
  • Screen flows and a design review before implementation
  • Application development with agreed device and functional testing
  • Release preparation and owner-assisted store submission

How the project runs

Six checkpoints from brief to handover.

An app MVP moves through the same six checkpoints. The design review happens on screen flows before implementation, and you approve the release before it is submitted from your store account.

  1. Define the outcome. Start with the users, the task, constraints and how you will judge success.
  2. Agree scope and fees. The proposal defines deliverables, milestones, review rounds, dependencies, ownership and ongoing costs.
  3. Review the design. Review the page or screen flow before committing to implementation.
  4. Build and test. Implementation proceeds through reviewable milestones, with agreed functionality, accessibility, security and performance checks.
  5. Approve and launch. You approve the release. Domain, hosting and app-store access are handled through scoped access, and store reviews remain external decisions.
  6. Handover and care. Receive the agreed source, access and operation notes. Any maintenance plan is optional and defines its tasks, limits and third-party costs.
See the full project process →

What you own at handover

  • Store accounts and approvals remain with you, the owner.
  • App-store access is handled through scoped access, not passwords shared in a brief.
  • You receive the agreed source, access and operation notes at handover.
  • Who supplies policies and support after release is decided in the brief, before development starts.

What is agreed, and what is not promised.

Store accounts and approvals remain with the owner. Store acceptance, review times and downloads cannot be guaranteed. Regulated features, payments and third-party APIs need separate review.

We confirm scope, fees, timelines and ownership in the project agreement. A brief is an enquiry, not a purchase or a promise of delivery.

How the project process works →

Free · no email required

Free tools to prepare
your brief.

Use these before you request a proposal. They organise the decisions; they are not quotes or proof of results.

Mobile app MVP planner

Define the user job, accounts, data, payments and first store release (Android first, iOS first or both) before development.

Combine in one reviewed scope

Related work can be combined in one reviewed scope. We do not bundle unrelated deliverables merely to make a project larger.

Before you start

Frequently asked questions

Do you build apps for Android, iOS or both?

We can scope an Android or iOS application, or both. Which platforms the product needs at launch is one of the first decisions in the brief. The free mobile app MVP planner lets you compare Android first, iOS first, or both together before development.

What is included in a mobile app MVP?

A prioritised MVP scope with platform and integration decisions, screen flows and a design review before implementation, application development with agreed device and functional testing, and release preparation with owner-assisted store submission.

Can you guarantee app store approval?

No. Store accounts and approvals remain with the owner, and store reviews are external decisions. Store acceptance, review times and downloads cannot be guaranteed.

Who owns the app and the store account after launch?

Store accounts remain with the owner. You approve the release, and app-store access is handled through scoped access rather than passwords in a brief. At handover you receive the agreed source, access and operation notes.

How much does it cost to develop a mobile app?

It depends on the features, integrations and ongoing support. Sign-in, payments and sensitive data change the scope, so they are decided early; regulated features and third-party APIs need separate review. Send a brief for a scoped proposal. Any budget you share is indicative, not a price agreement.

Your next step

Tell us what
you have in mind.

You don’t need a perfect specification to start. You can also email contact@techtenstein.com.

Describe your project