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TL;DR
Anton Lebedev built Letterly, an AI-powered voice-to-text dictation mobile app, to $250,000/month in revenue within two years. After failing at six or seven startups over a 15-year span, Anton achieved product-market fit by prioritizing absolute simplicity and friction elimination as his primary competitive advantages. By pairing a validated business model with a world-class user experience (UX) and aggressive paid ad spend ($200,000/month), he scaled to 20,000 paid subscribers.
The Founder’s Story
Anton spent 15 years trying to build various startup ventures, suffering six or seven consecutive failures. In each past attempt, he tried to build highly unique, complex, and novel products that nobody actually needed.
Two years prior, while working on a different startup, Anton and his team noticed early prototypes of AI transcription tools. Though powerful, they were clunky and difficult to use. Anton decided to shut down his failing startup, gather his co-founders, and build a voice recorder focused entirely on flawless user experience. Rather than aiming for novelty, he focused on a validated business model and won through superior, frictionless execution.
The Building Process
Letterly is an iOS app that converts speech into highly polished, structured text (e.g., notes, emails, social media posts, or meeting minutes).
Initially built using React Native, the team eventually rebuilt the app natively in Swift to deliver maximum performance and fluid UX, while utilizing a Python backend. Anton treats user experience as a separate, highly expensive feature. To maintain simplicity, the team continually refines the product at three stages:
- Prototype Discussion: Simplification of wireframe paths.
- Post-Build/Pre-Release: Actively checking if the implementation matches the simple dream, often postponing features for weeks to ensure they are frictionless.
- Post-Release Feedback: Redesigning layouts based on actual user difficulties.
Launch & Marketing Strategy: Frictionless UX & Paid Performance
Anton believes that user experience acts as a multiplier across every facet of the SaaS funnel (onboarding, retention, sales conversion, and referrals):
- Widget-to-Copy Record Flow: Letterly eliminates the friction of voice transcription. Users click a single widget button, record, tap stop, and the AI instantly generates copyable text.
- Aggressive Paid Advertising: Paid performance ads are the app’s primary acquisition vehicle. Anton reinvests the majority of his revenue back into growth, spending $200,000/month on advertising to drive 150,000 downloads.
- Day-One Monetization: From launch, Letterly focused on paid subscriptions, gating core features behind a paid wall with a free trial.
- Validation over Novelty: Instead of trying to invent a new market, Anton advises finding a concept already validated by competitors and out-executing them on simplicity and speed.
Technology Stack
- Development Platform: React Native (originally), migrated to native iOS (Swift)
- Backend Services: Python
- AI Transcription & Processing: OpenAI ChatGPT API (~$5,000/month)
- Design Platform: Figma (free plan)
Key Quotes & Metrics
- Monthly Revenue: $250,000/month
- Paid Subscribers: 20,000
- Monthly Active Users (MAU): 30,000
- Total Downloads: 150,000 (over 2 years)
- Operational Costs: Salaries for a team of 10 (~$30,000/month) | AI Costs (~$5,000/month) | Paid Ad Spend (~$200,000/month)
- “Every point of friction kills your revenue… Focus on user experience because it is a multiplier to everything you do.”
- “Don’t spend a lot of money and time to validate a completely new idea. Choose an idea that is validated by someone else… and make it much better and much simpler.”
Related Frameworks & Playbooks
- mobile-app-monetization — Paywall optimization, hard paywalls, and pricing metrics
- the-clone-strategy — Cloning validated up-market software with a niche pivot