First-time clients are welcome.
A dedicated contact will listen carefully to your needs, understand what you really want to achieve, and propose an appropriate plan.
Unusual or unconventional requests are welcome—there is no single "right answer," and we work with that reality.
Consultation-only inquiries are fine—please reach out anytime.

We cover a wide range of mobile app genres. Examples include:

◆ Business
CRM, sales support, inventory, meeting-room booking, internal comms, task management, and more.

◆ E-commerce & sales
Shop apps, food delivery, ticket sales, coupon distribution, and more.

◆ Lifestyle
Health tracking, household budgeting, travel booking, recipes, news, weather, and more.

◆ Entertainment
Games, music, video, photo editing, and more.

◆ Education
Language learning, programming courses, online learning, and more.

◆ Other
Location-based apps, camera/sensor use, AI features, IoT integration, and more.

Yes.
We help shape your idea into a concrete app.
Unusual concepts are welcome—there is no single "right answer," and we work with that reality.
We can support you from the planning stage, and consultation-only inquiries are fine—please reach out anytime.

Yes.
We consult on in-app purchases (subscriptions, consumable/non-consumable), ads (native, rewarded, etc.), and paid-app pricing—aligned with your business model.
We factor in each store's review guidelines and fee structures, and propose implementation approaches such as receipt validation and server-side integration.

Yes.
We support submission to the App Store and Google Play—including screenshots and listing copy, privacy disclosures and permission checks, and responses to review feedback—following each store's process.

Yes.
We implement subscriptions and consumables using StoreKit on iOS and Google Play Billing on Android, including server-side receipt validation, subscription state sync, and mechanisms such as App Store Server Notifications and Real-time Developer Notifications where appropriate.
We propose implementation and testing aligned with each store's guidelines and labeling rules, and can coordinate with specialists for legally sensitive wording or pricing display when needed.

The following are rough delivery guides by app type and scale (actual timelines vary with store review, design/asset readiness, external APIs, device integration, and offline requirements). Each range generally includes development through store submission and release (or internal distribution).

◆ Prototype / internal demo (1–3 screens, mock or read-only APIs, no store release)
Approximately 1.5–3 weeks

◆ MVP / proof-of-concept (single platform—iOS or Android—including store submission and launch)
Approximately 2–6 weeks

◆ Small app (3–8 screens, basics such as login, push, settings; roughly 0–1 external API)
Approximately 1–2 months

◆ Standard app (iOS + Android, ~10–15 main screens, accounts/notifications, roughly 1–2 API integrations)
Approximately 1.5–3 months

◆ Cross-platform single codebase (Flutter / React Native, etc., comparable to “standard app” above)
Approximately 1.5–3.5 months

◆ Mid-scale (accounts plus payments or maps/chat, IAP/subscriptions, segmented push, roughly 2–3 API integrations)
Approximately 1.5–3.5 months

◆ Field / operations apps (offline sync, sensors/barcode, roles and approval flows, etc.)
Approximately 2.5–5 months

◆ Real-time streaming, calls, or location sharing as the core experience
Approximately 3–5.5 months

◆ Replacing or heavily refactoring an existing app (many screens/APIs, phased release or data migration)
Approximately 3–6 months

◆ Large-scale (complex workflows, many integrations, MDM/enterprise distribution, 24/7 operations, etc.)
Approximately 5–10 months (some projects exceed one year)

Where requirements allow, AI-assisted design, implementation, and testing may shorten timelines above. We decide based on quality, security, and maintainability.

Estimates include a concrete schedule tailored to your project.

Yes.
We design and build backends and BaaS integrations on AWS, Azure, GCP, and more—together with your mobile app as needed.
We can also host APIs and admin panels on rental servers or VPS when that fits your requirements.
We support combinations with edge serverless such as Cloudflare Workers for delivery and API front-ends.

Yes.
From requirements onward, we design and implement API integration with servers, existing apps, internal systems, and external SaaS. We also support post-launch integrations and investigation when behavior differs from expectations.
Integration is a common and important requirement.
Using APIs and similar mechanisms, we connect your mobile app smoothly with systems you already operate.
Examples:

◆ Customer databases
Read/update customer data from the app to improve operations and satisfaction.

◆ Internal systems
Access internal tools from the app so work is not tied to one location.

◆ E-commerce sites
Link with existing shops for purchases and order history from the app.

◆ External services
Social login, payments, maps, and many other third-party integrations.

Yes.
We offer operations and maintenance—including OS upgrades, bug fixes, and feature additions—to keep your app healthy over time.

Yes.
We accommodate specification changes flexibly during development.
Depending on the change, additional fees or schedule adjustments may apply. Thank you for your understanding.

Yes.
We can join mid-stream—from design and implementation, handoffs from other teams or freelancers, and changes before store submission.
For work focused on strengthening in-flight products, incident response, and operational migration, we also offer In-Progress Product Support. See the overview and FAQs here. Please share your current situation.

For a defined period after delivery, we provide free support for bug fixes and similar issues.
Paid maintenance contracts are also available on request.

We use HTTPS by default and store sensitive on-device data in secure areas such as the iOS Keychain and Android Keystore. Logins use hashed passwords on the server where applicable, with brute-force mitigation and OAuth/SAML and similar federation when needed.
For APIs we implement proper token refresh/revocation, least-privilege permissions, and where appropriate certificate pinning or App Attest / Play Integrity.

Yes.
We welcome subcontracting from other companies and individuals.
Our engineers cover the full mobile lifecycle—requirements, design, development, testing, and operations—with strong technical depth.
Please contact us if you need extra capacity or specialized skills.

The following helps us move faster (missing pieces at inquiry time are okay):

◆ App overview — goals, target users, etc.

◆ Platforms — iOS, Android, Web

◆ Design direction — wireframes, mockups, etc.

◆ Functional requirements — desired features and detailed specs where possible

◆ Languages / stacks in use

◆ Timeline — desired delivery

◆ Budget — approximate range

If anything above is unclear, contact us anyway—we will work it out together.

We support structures such as fixed-price and quasi-delegation agreements, tailored to your needs.

We do not require an upfront deposit.
In most cases, the payment due date is set approximately one month after delivery and acceptance (completion of inspection).
Depending on the project scope, we may also set payment timings using a milestone approach.
We are flexible and open to discussing payment terms.

Yes, payment using cryptocurrency is highly welcome.
The currencies we currently accept, including fiat currency, are listed below.
Please feel free to inquire about other currencies.

Fiat Currencies
「JPY」「USD」「EUR」「GBP」「SGD」「CAD」「AUD」「NZD」「RON」「TRY」「HUF」

Cryptocurrencies
「USDT (ERC20, TRC20, BEP20, ArbitrumOne, KAVAEVM, POL PoS, MNT, SOL, OPMainnet, AVAXC) 」
「USDC (BEP20, ArbitrumOne, POL PoS, MNT, SOL, OPMainnet, AVAXC) 」
「XRP」「XLM」「BNB (BEP20) 」