Independent product studio 10+ years building software
Nixmio is an independent product studio led by a senior developer. You work directly with the person who designs, builds, and ships your product — from the first call to the App Store and production.
01 Work
Nixmio’s own products — live on the App Store, Google Play, and the web — built with the same care we bring to client work.
Products we designed, built, and launched.
Nutrido
Mobile app · iOS & Android
AI nutrition tracking that feels effortless — snap a photo, get calories and macros, stay on track.
Live on the App Store and Google Play
Remidue
Mobile app · iPhone
A calm bill and payment reminder app — no accounts, no tracking, your data stays on your iPhone.
Live on the App Store
Fotom
Mobile app · iPhone
An offline loyalty card wallet — scan a card once, show its barcode at checkout, share it with family.
Read more
AspectTake
Mobile app · iPhone
A dual-aspect video recorder — one take, two synchronised files: portrait 9:16 and landscape 16:9.
Read more
App Charts
Web SaaS · Laravel
App Store chart visibility across countries — honest rankings for indie iOS developers.
Read more
02 Services
Every engagement is a complete product — strategy, design, engineering, and launch — not a stream of hours.
Three ways to work together.Premium iOS and Android apps — from a focused first version to a mature product with subscriptions, notifications, and store presence.
Shipped in Nutrido, Remidue, Fotom, and AspectTake
Full-stack web platforms, business applications, APIs, and dashboards — the systems your product and your team run on every day.
Shipped in App Charts and the Nixmio platform itself
Practical AI features that save your users real time — built with review, cost, latency, and reliability in mind rather than as a demo.
AI meal analysis shipped in Nutrido on iOS and Android
Also within scope
Covered inside the three services above, not sold as extras.
Stripe billing, RevenueCat and StoreKit subscriptions, webhooks, and entitlement sync that reconciles cleanly.
In-app purchases shipped in Remidue, Fotom, and AspectTake
Availability, online payment, reminders, and staff dashboards.
Card acceptance on a phone with Stripe Terminal, receipts, and payment links.
Apps that talk to devices over Bluetooth, gateways, and telemetry dashboards.
Domain models, API contracts, queues, and data layers that stay simple as the product grows.
App Charts, Nutrido back end
VPS and managed hosting, DNS and SSL, backups, logging, and cron workers.
Runs every Nixmio product
Codemagic and GitHub Actions pipelines: automated builds and tests, signing, TestFlight and Play tracks.
Third-party APIs, data imports, email and push, and deployments that are boring in the best way.
03 Under the hood
How releases, infrastructure, and AI features are handled in production. “Shipped” marks what is proven in Nixmio products.
Engineering depth, where it matters.Builds, signing, and store submission are automated, so releases are routine rather than events.
AI features earn their place when they are reliable, reviewable, and affordable at scale.
Stack
04 Process
Each step has a clear purpose and a tangible outcome, and you talk to the same person throughout.
A transparent path from first call to launch.Step 01
We start with your goals, your users, and your constraints — and define what success looks like before anyone writes code.
What you receive
Step 02
We decide what ships first and what can wait, so you launch sooner without cutting corners later.
What you receive
Step 03
I design how the product works and how it is built, so it stays simple, reliable, and ready to grow.
What you receive
Step 04
You see working software early and often — real builds on your phone or in your browser, not status reports.
What you receive
Step 05
Before launch we make sure the product feels right and behaves reliably for real users on real devices.
What you receive
Step 06
We ship, watch how real users behave, and keep improving based on evidence rather than assumptions.
What you receive
05 About
I’m Viacheslav, a senior software developer and the founder of Nixmio. I design, build, and launch mobile apps, SaaS products, and the back ends behind them.
No hand-offs between sales people, project managers, and developers you never meet: you talk directly to the engineer responsible for your architecture, code, quality, and release. For selected projects I bring in trusted specialists for design, QA, or DevOps, while accountability stays with me.
Your technical partner
Viacheslav
Senior software developer · Founder of Nixmio
Why Nixmio
Requirements and decisions go straight to the engineer shipping the code.
One owner for architecture, implementation, and production issues — no hand-offs.
Architecture, UX, performance, and security considered from the first commit.
Practical guidance on scope, pricing, payments, analytics, and launch.
Readable, well-structured code that the next developer can pick up.
Store listings, infrastructure, and release workflows are part of the definition of done.
06 Experience
A public Upwork track record, reviews reproduced verbatim, and five products shipped under the Nixmio name.
Experience you can verify.“A hard-working, trustworthy professional and overall a very nice colleague. Slava is the type of person with whom you can discuss ideas and, after agreeing on requirements, you can trust that what was discussed will be delivered on time with the right quality. Most work has been Flutter-based, but Slava never hesitates digging into other parts of the software stack and handling release processes. He single-handedly designed and implemented three Flutter MVP apps from scratch, surpassing expectations in functionality, design, and speed. He's genuinely a top guy!”
“Slava did a great job on our Android and iOS Apps. He understood the requirements, always delivered on time and with great quality. He took care of the entire release process so we had nothing to do except ask for more features. He is a great professional to work with and comes highly recommended. Will hire again.”
“Slava is a true professional! He delivered good work on our EdTech Flutter app and I enjoyed working with him. He has strong hard skills in mobile app development and his communication was top-notch, he met all deadlines. I really enjoyed working with Slava and will definitely have additional jobs for him in the future.”
“Slava works fast, delivers high quality work, communicates really well and is just a really nice guy. We wish him all the best!”
Figures from the public Upwork profile. Reviews are reproduced verbatim; client names are withheld.
07 FAQ
Something else on your mind? Email me directly.
Nixmio is an independent software studio run by Viacheslav, a senior software developer who designs, builds, and launches mobile apps, SaaS platforms, and custom software end to end.
Viacheslav does — architecture, code, quality, and release. There are no account managers or hidden development teams. For selected projects trusted specialists join for design, QA, or DevOps, while integration and accountability stay with him.
Complete products: the first version of a mobile app or SaaS platform, a serious rebuild of an existing product, or a substantial new capability such as payments, bookings, or AI features. Nixmio is not a fit for very small one-off tasks or hourly staffing.
It depends on scope, but most engagements are complete products rather than small tasks. Share your budget range in the project form and you will get an honest answer about what is realistic and how the work could be phased.
Nixmio has launched Nutrido (AI nutrition tracking for iOS and Android), Remidue (a private bill and payment reminder app for iPhone), Fotom (an offline loyalty card wallet), AspectTake (a dual-aspect video recorder for iPhone), and App Charts (an App Store chart visibility tracker on the web).
Native iOS with Swift and SwiftUI, Flutter for cross-platform apps, Laravel and PHP for back ends and SaaS, Python where it fits, MySQL and PostgreSQL, and integrations such as Stripe and RevenueCat. Releases run through Codemagic and GitHub Actions pipelines, and AI features are built with current LLM, vision, and retrieval tooling.
In Europe, on Central European Time, working with clients worldwide. Communication is direct and asynchronous-friendly, with calls whenever they help.
Use the project form on nixmio.com or the “Discuss your project” button to share what you want to build, your stage, and your budget range. Viacheslav replies directly with a practical next step — usually a short discovery call.
08 Start a conversation
Share what you want to build and where you are. You will get a direct, personal reply from Viacheslav — no sales team, no automated sequences.
Tell me about your product.What happens next
Prefer email? hello@nixmio.com
