# Vlad Yasinski (ROIMOBI)

> Vlad Yasinski is a performance marketer and growth consultant based in Warsaw, Poland, with 10+ years of paid acquisition experience. He took two apps to Top-1 in their US App Store categories, managed Facebook and TikTok budgets of up to $1.5M per month, and builds the analytics, web funnels and automation around paid acquisition for app and subscription businesses.

ROIMOBI is the consulting practice of Vlad Yasinski. He works with app and subscription businesses in three ways: a growth audit, a build of the marketing system (tracking, BI, web funnels, automation and competitor monitoring), and a run (fractional or full-time ownership of paid acquisition). Based in Warsaw, Poland. Remote, in English, Polish and Russian.

Last updated: 2026-11-09. Canonical site: https://www.roimobi.com.

## Start here

- [About Vlad Yasinski](https://www.roimobi.com/about): background, experience, tools and how to work together
- [Profile as Markdown](https://www.roimobi.com/vlad-yasinski.md): one-page profile with facts, experience and contacts
- [Full site text for LLMs](https://www.roimobi.com/llms-full.txt): services, case studies, FAQ and guide index in one file
- [Structured profile (JSON)](https://www.roimobi.com/profile.json): the same facts in a JSON Resume style file
- [Blog RSS feed](https://www.roimobi.com/feed.xml): new articles as they are published

## Services

- [AI Marketing Systems](https://www.roimobi.com/services/ai-marketing-systems): AI marketing consultant for app and subscription businesses. Paid acquisition, web funnels, analytics, automation and competitor intelligence in one loop.
- [Marketing Analytics and BI](https://www.roimobi.com/services/marketing-analytics-bi): Marketing analytics consultant for app and subscription businesses: attribution, server-side tracking, LTV dashboards and unit economics on real revenue.
- [Ad Automation and Competitor Intelligence](https://www.roimobi.com/services/ad-automation-competitor-intelligence): Meta ads automation consultant: pacing, alerts, kill and scale rules, plus competitor ad monitoring on public data, official APIs and platform terms.
- [Web2App and Web2Web Funnels](https://www.roimobi.com/services/web2app-funnels): Web2App and Web2Web funnel build for subscription apps: quiz and paywall flows, Stripe checkout, Conversions API tracking and BI on actual payments.
- [User acquisition audit](https://www.roimobi.com/services/growth-audit): A fixed-scope user acquisition audit for app and subscription businesses: spend, tracking, funnel and automation, ending in a ranked fix list.
- [Performance Marketing and Fractional Growth](https://www.roimobi.com/services/performance-marketing-consulting): Performance marketing consultant and fractional growth lead for app and subscription businesses: CAC, LTV, ROAS and payback owned hands-on in the accounts.
- [Mobile User Acquisition](https://www.roimobi.com/services/mobile-user-acquisition): Paid user acquisition for subscription apps on Meta, TikTok, Apple Search Ads and Google. Two apps taken to Top-1 in their US App Store categories.

## Case studies

- [InPulse](https://www.roimobi.com/work/inpulse): Top-1 in its US App Store category (2020 to 2023)
- [Themify](https://www.roimobi.com/work/themify): Returned to Top-1 in its US App Store category (2024 to 2025)
- [Web funnels and BI](https://www.roimobi.com/work/web-funnels-and-bi): Built end to end, read on actual payments (2025 to 2026)
- [App portfolio turnaround](https://www.roimobi.com/work/portfolio-turnaround): Rebuilt to positive unit economics (2023 to 2024)

## Guides

- [Facebook Ads Kill Rules: When to Cut, Hold or Scale](https://www.roimobi.com/blog/facebook-ads-kill-rules): Facebook ads kill rules for subscription apps: spend thresholds, a hold window, scale triggers and rollback, with illustrative numbers.
- [Stripe Meta Conversions API: Server-Side Purchase Events](https://www.roimobi.com/blog/stripe-meta-conversions-api): How to send Stripe purchase events to Meta through the Conversions API with event_id deduplication, so web funnel ROAS reflects real payments.
- [Web2Web Funnels: Definition, Tracking and When They Win](https://www.roimobi.com/blog/web2web-funnels): Web2Web funnels explained: how they differ from Web2App, how to track them end to end, and when they beat an app-store flow for subscription products.
- [Marketing Data Stack for Subscription Apps, in 3 Stages](https://www.roimobi.com/blog/marketing-data-stack-subscription-apps): A staged marketing data stack for subscription apps: what to track first, when to add a warehouse and BI, and which sources must join to show real ROAS.
- [CAC LTV Payback Dashboard for Subscription Apps](https://www.roimobi.com/blog/ltv-payback-dashboard-subscription-apps): What a CAC, LTV and payback dashboard must show for subscription apps: the metrics, the cohort view, the cuts and the decisions each chart should trigger.
- [Ad Spend Anomaly Alerts: What to Monitor and When](https://www.roimobi.com/blog/ad-spend-anomaly-alerts): Ad spend anomaly alerts for paid acquisition: metrics to watch, a simple baseline method, alert levels and who responds, with an illustrative example.
- [Competitor Ad Monitoring: A Weekly System for Decisions](https://www.roimobi.com/blog/automated-competitor-ad-monitoring): Competitor ad monitoring on public data: official ad libraries, store pages, ToS and GDPR limits, and a weekly routine that ends in a decision.
- [AI Media Buyer: What to Automate and What Stays Human](https://www.roimobi.com/blog/ai-media-buyer): AI media buyer explained: which paid acquisition tasks to automate, which to keep with a person, and the guardrails that stop an agent from burning budget.
- [AI Creative Briefs: A Workflow for Ad Testing](https://www.roimobi.com/blog/ai-creative-briefs): AI creative briefs for paid social: a repeatable workflow from data and competitor angles to testable variants, with a brief template and review checks.
- [n8n vs Scripts for Paid Acquisition Automation](https://www.roimobi.com/blog/paid-acquisition-automation-n8n-vs-scripts): n8n or scripts for paid acquisition automation: how to choose by task, maintenance cost, error handling and who owns the workflow.
- [Full-Cycle Marketing System: Six Layers From Ad to Decision](https://www.roimobi.com/blog/full-cycle-marketing-system): The full-cycle marketing system: six layers from acquisition to weekly decisions, how they connect, and where subscription businesses leak money.
- [Weekly Marketing Review: A 30-Minute Budget Agenda](https://www.roimobi.com/blog/weekly-marketing-review): A weekly marketing review agenda that fits 30 minutes and ends in budget decisions: inputs, order of topics, decision rules and an action log.
- [Cohort Analysis for Mobile Apps](https://www.roimobi.com/blog/cohort-analysis-mobile-apps): How to use cohort analysis in mobile UA: grouping users by install date and source to read retention, monetization and payback truthfully instead of blended averages.
- [Mobile App User Acquisition: The 2026 Playbook](https://www.roimobi.com/blog/mobile-app-user-acquisition-playbook): A practical playbook for mobile app user acquisition in 2026, channels, creative, measurement under SKAN, Web2App, and how to scale paid UA profitably.
- [Customer Acquisition Cost (CAC) for Mobile Apps: Calculate & Benchmark](https://www.roimobi.com/blog/customer-acquisition-cost-mobile-apps): How to calculate customer acquisition cost for a mobile app, the difference between CAC, CPI and CPA, healthy LTV:CAC and payback benchmarks, and how to lower CAC.
- [Web2App Funnels: Why Subscription Apps Are Leaving the App Stores](https://www.roimobi.com/blog/web2app-funnels-subscription-apps): Why subscription apps move purchases to web with Web2App funnels, the margin, data and optimization upside, and how to build one.
- [ROAS vs LTV: How I Decide What to Scale (and When to Kill It)](https://www.roimobi.com/blog/roas-vs-ltv-what-to-scale): ROAS gets you started, LTV tells you the truth. How to use both to make scaling decisions on a mobile app growth P&L.
- [Unit Economics for Subscription Apps](https://www.roimobi.com/blog/unit-economics-subscription-apps): The unit economics of subscription apps explained: how CAC, LTV, payback and margin fit into the one equation that decides whether growth is profitable.
- [Payback Period: The Metric That Governs UA Spend](https://www.roimobi.com/blog/payback-period-mobile-apps): Why payback period is the metric that should govern mobile UA spend: how to calculate it, what a healthy window looks like, and how it ties to cash and scale.
- [SKAN in 2026: Measuring iOS User Acquisition Without Losing Your Mind](https://www.roimobi.com/blog/skan-2026): How SKAdNetwork works in 2026, what it hides, and the conversion-value setup and triangulation that let you scale iOS user acquisition with confidence.
- [AppsFlyer vs Adjust vs Singular: Choosing an MMP](https://www.roimobi.com/blog/mmp-comparison-appsflyer-adjust-singular): How to choose a mobile measurement partner (MMP): what AppsFlyer, Adjust and Singular each do well, how they differ on attribution, cost data and analytics, and how to decide.
- [Incrementality Testing for Mobile Apps](https://www.roimobi.com/blog/incrementality-testing-mobile-apps): What incrementality testing is and why it matters for mobile UA: geo-experiments, holdout groups, and measuring the installs you would not have gotten anyway.
- [A Creative Testing Framework for App UA](https://www.roimobi.com/blog/creative-testing-framework-apps): A practical creative testing framework for app user acquisition: concepts versus variations, how to structure clean tests, what to measure, and how to scale winners.
- [In-House vs Agency vs Freelance UA: Which to Choose](https://www.roimobi.com/blog/in-house-vs-agency-user-acquisition): In-house vs agency vs freelance user acquisition: the trade-offs on cost, control, expertise and alignment, and how to decide based on your stage and budget.
- [All articles](https://www.roimobi.com/blog): 84 guides on user acquisition, funnels and measurement

## Resources and tools

- [Mobile UA Audit Checklist](https://www.roimobi.com/resources/mobile-ua-audit-checklist): The 30-point checklist for auditing an app’s user acquisition. Find the leaks before you scale.
- [CAC & LTV Benchmark Sheet](https://www.roimobi.com/resources/cac-ltv-benchmark-sheet): Directional CAC, payback and LTV:CAC ranges for subscription apps, plus the formulas, on one page.
- [UA Hire Scorecard + JD Template](https://www.roimobi.com/resources/ua-hire-scorecard): How to evaluate a user acquisition hire, what “great” looks like on each axis, and a ready job-description template.
- [Web2App Funnel Blueprint](https://www.roimobi.com/resources/web2app-funnel-blueprint): The structure of a Web2App funnel that lifts LTV and margin, step by step, with the tools at each stage.
- [Creative Testing Framework](https://www.roimobi.com/resources/creative-testing-framework): How to run a creative-testing cadence that keeps CAC flat while spend climbs. The cycle, the structure, the kill rules.
- [Channel Selection Cheatsheet](https://www.roimobi.com/resources/channel-selection-cheatsheet): Which paid channel for which job, the order to add them in, and the failure mode of each. One page.
- [CAC and LTV calculator](https://www.roimobi.com/tools/cac-ltv-calculator): free calculator for payback, LTV and CAC

## Open-source skills

- [Open-source growth skills](https://www.roimobi.com/open-source): eleven MIT-licensed agent skills for app and subscription growth, by Vlad Yasinski
- [GitHub repository](https://github.com/ua5er/user-acquisition-skills): source of the skills
- Install all: `npx skills add ua5er/user-acquisition-skills`
- [ua-kill-scale-rules](https://github.com/ua5er/user-acquisition-skills/tree/main/skills/ua-kill-scale-rules): Writes kill, scale and budget pacing rules for Meta and TikTok from your CAC target, then applies them to a campaign export. Install: `npx skills add ua5er/user-acquisition-skills --skill ua-kill-scale-rules`
- [paywall-audit](https://github.com/ua5er/user-acquisition-skills/tree/main/skills/paywall-audit): Audits a subscription paywall or checkout for message match, proof, price display, disclosure and CTA. Install: `npx skills add ua5er/user-acquisition-skills --skill paywall-audit`
- [onboarding-web2app-funnel](https://github.com/ua5er/user-acquisition-skills/tree/main/skills/onboarding-web2app-funnel): Produces distinct onboarding or web-to-app concepts with hypotheses, a measurement plan and a test order. Install: `npx skills add ua5er/user-acquisition-skills --skill onboarding-web2app-funnel`
- [unit-economics-check](https://github.com/ua5er/user-acquisition-skills/tree/main/skills/unit-economics-check): Checks CAC, cohort LTV and payback from your own data and sets a safe CAC ceiling. Install: `npx skills add ua5er/user-acquisition-skills --skill unit-economics-check`
- [attribution-sanity-check](https://github.com/ua5er/user-acquisition-skills/tree/main/skills/attribution-sanity-check): Reconciles ad platform, MMP, SKAN and backend payment data and lists the fixes that matter. Install: `npx skills add ua5er/user-acquisition-skills --skill attribution-sanity-check`
- [creative-testing-research](https://github.com/ua5er/user-acquisition-skills/tree/main/skills/creative-testing-research): Plans a creative testing cycle and researches competitor ads from public ad libraries only. Install: `npx skills add ua5er/user-acquisition-skills --skill creative-testing-research`
- [weekly-ua-report](https://github.com/ua5er/user-acquisition-skills/tree/main/skills/weekly-ua-report): Builds a one-page weekly acquisition report that ends in decisions. Install: `npx skills add ua5er/user-acquisition-skills --skill weekly-ua-report`
- [ai-marketing-system-audit](https://github.com/ua5er/user-acquisition-skills/tree/main/skills/ai-marketing-system-audit): Maps a marketing system as a loop (acquire, convert, measure, automate, intelligence, decide) and ranks the gaps. Install: `npx skills add ua5er/user-acquisition-skills --skill ai-marketing-system-audit`
- [meta-ads-learning-audit](https://github.com/ua5er/user-acquisition-skills/tree/main/skills/meta-ads-learning-audit): Audits a Meta ad account stuck in Learning limited: event volume against the budget learning needs, split signal, test CPMs, funnel and CAPI, plus a post-mortem of past campaigns. Install: `npx skills add ua5er/user-acquisition-skills --skill meta-ads-learning-audit`
- [meta-ads-launch-planner](https://github.com/ua5er/user-acquisition-skills/tree/main/skills/meta-ads-launch-planner): Plans a Meta sales launch that exits learning: budget from target CPA x 50 events a week, one broad ad set on CBO, day-by-day rules, automated stop and restart rules and a scaling schedule. Install: `npx skills add ua5er/user-acquisition-skills --skill meta-ads-launch-planner`
- [meta-creative-testing](https://github.com/ua5er/user-acquisition-skills/tree/main/skills/meta-creative-testing): Designs creative testing for Meta after Andromeda: which past ads to relaunch, three test structures with the cost of an answer, winner and kill criteria, and briefs for designers and UGC creators. Install: `npx skills add ua5er/user-acquisition-skills --skill meta-creative-testing`
- [Onboarding redesign: five concepts for a subscription AI photo app](https://www.roimobi.com/open-source/cases/onboarding-redesign-subscription-photo-app): design case, no measured results
- [Paywall redesign: six versions for a subscription AI photo app](https://www.roimobi.com/open-source/cases/paywall-redesign-subscription-photo-app): design case, no measured results
- [Live gallery](https://ua5er.github.io/user-acquisition-skills/#paywalls): 14 interactive paywall and 5 onboarding concepts built with the skills
- [dc-lite](https://github.com/ua5er/dc-lite): A 3.4 KB open-source renderer that runs interactive HTML design boards as plain pages on any static host, with animations, timers and click logic intact. No editor, no login, no build step. MIT. Demo: https://ua5er.github.io/dc-lite/

## Contact

- Email: insk.ma@gmail.com
- WhatsApp: +48 573 337 034 (https://wa.me/48573337034)
- Telegram: @ua5er (https://t.me/ua5er)
- LinkedIn: https://www.linkedin.com/in/vlad-yasinski-ua5er/
- Contact form: https://www.roimobi.com/contact

## Optional

- [Site map](https://www.roimobi.com/sitemap.xml): every public URL with its last change date
- [Work page](https://www.roimobi.com/work): all published case studies