Telegram Mini App development

It is a web-based product that opens inside Telegram and can work together with a bot, Telegram user context and external services.

Yes. The integration depends on the existing API, authentication model and the exact data the Mini App needs to read or change.

Payment flows can be included when the product, market and Telegram rules support the required method. We confirm the exact route during scoping.

Yes. When the product needs bot commands, notifications or entry flows, the bot and Mini App are designed as one system.

Use a bot for messages, reminders and short guided conversations. A Mini App helps when the task needs forms, comparison, browsing or a visual account area. We can begin with the bot and add a web interface only when it solves a real limitation.

The number of complete user journeys, interface complexity, identity and permissions, data model, integrations, payments and operator controls. We define acceptance checks and first-release boundaries before estimating. Hosting and external-service usage remain separate operating costs.

One complete user journey, its Telegram entry point, records read or changed, permission roles, external integrations and acceptance checks. For example, a booking scope must include the authoritative availability check and recovery after an interrupted write, as well as its screens. We separate the Mini App interface, bot behaviour, backend and operator responsibilities in the estimate.

The backend validates the signed Telegram initData and applies its own freshness and permission checks. initDataUnsafe is convenient frontend context, not proof that a request is authorised. The exact identity flow depends on the chosen launch mode.