Helsinki, Finland · since 2018

We ship apps for our own users — and yours.

Smart Kiitös Oy is a Helsinki software studio run by Lemon Xie. iOS-first, with full-stack web and Android alongside. Ten years in the field, six apps in the App Store, long client partnerships since 2016.

Work

Apps we've shipped

Six iOS apps. Each one began as a question we wanted to answer ourselves — then became something other people use too.
Second Brain — AI memory companion

Second Brain

AI memory companion. On-device classification, semantic search, weekly reflections.

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NoDiary — minimalist daily diary

NoDiary

Minimalist daily diary. One entry per day, mood tracked by sheep, photos, iCloud sync.

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Ashglow — async social app

Ashglow

Async social. Write thoughts into a bonfire, receive sparks from strangers. No chat, no profiles.

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Fed? — pet feeding tracker

Fed?

Pet feeding tracker. One tap to mark meals, family sync, widgets, medication reminders. 4 languages.

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Symptio — health symptom tracker

Symptio

Health symptom tracker. Record in 15 seconds, discover patterns, share clear PDF reports with your doctor.

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Ping — daily check-in for solo living

Ping

Daily check-in for people who live alone. Tap once to share how you feel; quiet safety net only when needed.

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Co-founded Mooova — an instant transport & bulky-waste app shipped to 18 cities across Sweden, Germany, and Spain. Acquired in 2023.

Services

What services does Smart Kiitos offer?

Custom software development with a focus on mobile, AI, and user experience. Based in Finland, working with clients globally.

iOS & Mobile Apps

Over 10 years of native iOS development with Swift, SwiftUI, and UIKit — from concept to App Store. For Android delivery or cross-platform reach, we work with Kotlin, React Native, or Flutter as the project needs. Local-first architecture, clean MVVM, accessibility, and App Store optimization included.

AI Integration

Integrate AI into your products with a privacy-first approach. On-device ML with Core ML and Apple Foundation Models, cloud AI via Claude and OpenAI APIs, and custom NLP pipelines. We make AI practical, not gimmicky.

Web & Full-Stack

End-to-end product development — marketing websites, web apps, backends, REST and GraphQL APIs, databases, and cloud infrastructure. From a one-page launch site to a production product backend.

Technical Consulting

Code reviews, architecture audits, tech stack selection, and AI feasibility studies. Whether you need technical due diligence for an acquisition or team mentoring to level up your developers, get expert guidance first.

Contact

Let's work together

Whether you need a development partner or have a project in mind, we'd love to hear from you.
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Email

[email protected]

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Location

Finland, EU
Working with clients globally

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Company

Smart Kiitös Oy
Finnish registered company

FAQ

Frequently asked questions

Common questions from prospective clients.
What technologies do you specialize in?
We specialize in native iOS development with Swift, SwiftUI, and UIKit. For AI, we work with Core ML, Apple Foundation Models for on-device intelligence, and cloud APIs like Claude and OpenAI. We also have deep experience with local-first architectures using SwiftData and CloudKit.
Do you work with international clients?
Yes. Smart Kiitös is based in Finland but we work with clients globally. Our team is fluent in English, Chinese, and Finnish, making cross-border collaboration seamless.
What is your typical engagement model?
We prefer long-term consulting partnerships over one-off projects. Our two longest client relationships started in 2016 and 2017 and continue to this day. This depth of collaboration produces better code, better products, and real trust.
Can you help integrate AI into an existing iOS app?
Absolutely. We can add on-device ML using Core ML and Apple Foundation Models for zero-latency, private inference — or integrate cloud AI APIs like Claude for more complex reasoning. Our approach is always privacy-first: user data stays on-device whenever possible.
Do you also build your own products?
Yes. We've shipped six iOS apps under our own name: Second Brain (AI memory companion), NoDiary (minimalist daily diary), Ashglow (async social), Fed? (pet feeding tracker, 4 languages), Symptio (health symptom tracker), and Ping (daily check-in for solo living). Building our own products keeps our skills sharp and lets us experiment with new frameworks and AI before bringing them to client work.
How fast can you start?
Usually within 2–4 weeks for new engagements. Active client work has priority on schedule, so capacity varies. If you have a hard deadline, mention it in the first email — we'll tell you honestly whether we can hit it before signing anything.