Production and collaboration inquiries
What can be discussed
Structure and specification planning
Clarifying goals, screens, data, interactions, and exceptional cases.
Investigation and technical validation
Organizing symptoms and conditions, narrowing possible causes, and using devices for verification where appropriate.
Prototypes and practical apps
From a focused working prototype to an application prepared for public release, with scope agreed individually.
Release preparation
Documentation, settings, and validation for App Store submission. Ongoing maintenance is considered individually.
Work focuses on iPhone and iPad. Mac, Windows, and Android integration or prototypes may also be considered. Specialist design work may involve collaboration with another professional.
Initial inquiry and paid work
The initial inquiry and a simple assessment or rough estimate are free. Detailed code or document review, cause analysis, specification and architecture work, device testing, and prototype production are paid work. Scope and cost are presented before work begins.
Indicative cost and timing
Focused prototype
From tens of thousands of yen and from several days to several weeks.
Small practical app
From the low hundreds of thousands of yen and from several weeks to several months.
Release-quality app with multiple systems
An app comparable in structure to Sort & Done!, combining import, editing, storage, undo and redo, export, localization, accessibility, device testing, and release preparation, may take roughly six to twelve months. Cost is quoted individually.
A visually simple app can still have a complex internal structure. These timings do not imply that every app requires six months. Indicative prices are shown in Japanese yen; overseas currency, payment method, and fees are discussed individually.
Client participation
Complex apps require ongoing confirmation of use cases, interactions, priorities, and exceptional behavior. Programming knowledge is not required, but decisions from the real use or business perspective are essential.
Payment, changes, and cancellation
Short investigations or prototypes generally use a single payment. Longer work may use staged payments at commencement, intermediate milestones, and delivery. Major additions or changes are re-estimated. If work ends early, completed work and existing deliverables are reviewed to agree on settlement.
Deliverables, rights, and portfolio use
Deliverables, source-code transfer, rights, and usage terms are agreed for each project. Permission to describe the work in the Mexenixi portfolio is normally requested, with names, images, client identity, scope, and publication timing agreed in advance. Anonymous or delayed publication is possible. Projects allowing no portfolio reference are considered individually based on conditions and fees.
Confidential information and accounts
Send only an overview in the first message and do not include confidential, personal, or authentication information. Discuss formal confidentiality before sharing detail. Passwords, two-factor codes, private keys, and account credentials are not normally accepted; configuration proceeds through the client's own actions or screen sharing.
Communication and language
Japanese text communication is the default. Calls or screen sharing are used only when needed. Other languages are handled only through text with translation assistance. Important terms remain documented.
Other conditions
Availability depends on scope, size, required expertise, timing, and responsibility. Work intended for illegal or harmful purposes is not accepted.