Olearis

Olearis is a Ukraine-based software development company founded 12 years ago. The team spans mid to senior-level developers—95% of the staff holds mid or senior titles—and has built over 400 products. The company is ranked as a top app development firm on Clutch and GoodFirms, and maintains a 5.0 rating across multiple platforms based on client testimonials. Leadership includes Oleg Lavrentyev (founder and CTO), Alex Zavialov (CEO), Alex Makhtin (Chief Product Officer), and Joel Shafer (Chief AI & Strategy Officer).

Services and capabilities

Olearis operates as a full-cycle product studio. The discovery and design phase covers market research, product positioning, UX/UI design, and business analysis. The company emphasizes that non-technical founders work alongside experienced business analysts to translate vision into requirements.

On the development side, Olearis builds native iOS and Android apps, cross-platform solutions using Flutter, web applications (from presentational sites to administrative consoles), and backend systems. The team also develops AI-powered applications, with recent work integrating ChatGPT and other LLMs. A notable example: for Mila Cares, Olearis refactored an iOS app to reduce memory requirements from 10 GB to 30 MB.

QA is handled in-house through manual testing, automated testing, unit testing, and integration testing. Post-launch, the company offers maintenance, bug fixes, feature development, and product analytics—configuring metric dashboards and helping clients monitor user behavior and optimize conversion funnels. Communication happens via Jira, Figma (for design), Slack, Notion, Google Drive, and Dropbox.

Notable work

Olearis develops both client work and internal products. UpLife, an in-house mental health app the company funded and owns, reached 50,000 monthly active users and $1M ARR within two years on the market. The app focuses on self-guided therapy with mood tracking, journaling prompts, and an AI assistant. App Store reviews cite the guided sessions, reflection prompts, and accessibility for those unable or unwilling to seek traditional therapy.

Other notable projects include Mila Cares (an IoT air purifier with smart home integration), Kleanapp (on-demand cleaning services with app management), Rogo (event item rental platform), and Elevate Health (health management application). For an investment management company, Olearis delivered backend, web, and mobile app services and completed the work within budget. One client, an enterprise app development firm, reports that Olearis-built apps are now in use by five of the top twenty global financial institutions. Another long-term client (Jump Twenty Four) has worked with Olearis for five years on iOS and Android development.

How they work

Olearis typically starts with a discovery and conceptualization phase to clarify requirements before providing fixed pricing. The preferred engagement model is Time and Material with weekly time reporting, allowing flexibility to adapt to scope changes and changes. During the initial phase, clients work with business analysts, UX/UI designers, and a product manager. The development phase brings in engineers, QAs, and a project manager. Weekly meetings and Jira access keep clients informed of progress. The company signs NDAs and uses encrypted communication channels. Post-launch support includes ongoing maintenance, feature development, and analytics configuration.

Team and credentials

The company has 400+ products shipped and 12 years of market presence. Leadership is stable—Oleg Lavrentyev (founder and CTO), Alex Zavialov (CEO), Alex Makhtin (Chief Product Officer), and Joel Shafer (Chief AI & Strategy Officer) anchor the team. The staff is 95% mid and senior-level developers. Olearis is recognized as a top IoT company on Clutch (2026), top app development company on Clutch (2026), and top mobile app development company on GoodFirms (2024). The company maintains a 5.0 rating on Upwork based on dozens of reviews. Client testimonials consistently cite transparency, responsiveness, domain expertise (particularly in Flutter, iOS, Android, and fullstack development), and ability to deliver on timeline and budget.

The company works on an hourly basis with weekly time reporting and operates across mental health, productivity, education, social, on-demand services, digital media, IoT, and AR/VR sectors.