Startups using Kotlin

iCollect Everything is the #1 app on the App Store for managing your collectibles or inventory, whether at home, business, work, or school.

ControlResell is a monthly subscription software that allows resellers to track all their sales and purchases. We have a YouTube channel with tens of thousands of views, a podcast, and a recognized brand image in the industry (France only). The potential is enormous, especially in the US.

A profitable subscription app solving a personal, emotionally-driven problem. No seasonality, universal demand across cultures, strong upfront willingness-to-pay. Already localized into multiple languages and live on iOS and Google Play, though those localized markets haven't been targeted yet. It ranks strongly in both traditional and AI/LLM search for several of the category's highest-intent keywords, all trending up.

ThreadCam allows user to create 3D mockups of their tshirt/garment designs. Mainly iOS app, just launched android app.

It is built with Swift for iOS and Kotlin for Android.

AI + React Native Boilerplate. Save hours (and headaches) with a production-ready mobile app, designed to ship your next startup.

The Kotlin/Compose Multiplatform boilerplate to launch Android and iOS apps faster, from a single codebase.

Indilingo is an AI-powered language learning app built for India’s multilingual reality, helping you master 20+ Indian languages like Hindi, Sanskrit, Tamil, Telugu, Kannada and more directly from your own mother tongue, without relying on English. With adaptive lessons, live AI speaking and chat practice, real-time pronunciation feedback, and culturally rich, real-world scenarios, Indilingo makes language learning intuitive, immersive, and truly personal to every Indian learner.

no code web to app converter which converts websites to native android apps if you are small business owner or just a curious who doesn't wanna open browser everytime! This is the best choice

LinkedIn post generator that doesn't sound like AI

A polished, ready-to-monetize iOS app that uses AI-powered image recognition to instantly identify wood types and plants from a single photo. Perfect for woodworkers, hobbyists, botanists, and DIY enthusiasts. Already live on the App Store with a clean UI and built-in monetization potential. A turnkey product in the growing AI utility app space — just acquire and scale.Looking to sell to raise capital, price is negotiable

Transform the way you work on iPhone with BossAI, the intelligent keyboard that turns your voice into polished text.

WidGeek Widget is the fastest and most fun way to stay close to your best friends by beaming your mood directly to their Home Screen.

Capture your daily moments in just 5 seconds. Watch your life story unfold through beautiful automatic montages.

Turn your selfies or portraits into cool vintage photos in seconds with Vintage AI.

SubFox is an app that manages and tracks subscriptions, helping users save money.

Edit, compress, and chat with PDFs offline — fast, private, and lightweight. Available on both android and iOS.

AI that does photoshoots for your products

Chrome extension that turns Netflix and YouTube into language learning tools

Scripttie is a teleprompter app for your phone that uses voice tracking to make recording videos easier and more natural. Instead of memorizing lines or racing against a scrolling timer, you read your script while the app listens to your voice and moves the text at your own pace. If you pause to breathe or add a thought, the script stops with you. When you start speaking again, it continues exactly where you left off.

Tired of a cluttered gallery? Swipe to Delete makes organizing your photos quick, easy, and satisfying. With simple swipe gestures, you can delete unwanted photos, duplicates, or blurry shots in seconds. No complicated steps, no long menus — just swipe and clean!

A Visual AI RPG adventure with AI NPC's and World

Phone Health Pro is a premium Android diagnostic and benchmarking utility designed to give users complete transparency into their device's hardware health. Key Features: • Hardware Verification: 30+ automated tests covering sensors, cameras, microphones, and displays to verify components are working perfectly. • Performance Benchmarks: Advanced CPU throttling, thermal monitoring, and video decode stress tests to gauge real-world performance. • Battery & Charging: Deep analytics on battery wear,

Your subscriptions, under control. Submindo's AI scores every plan, flags waste, and finds cheaper alternatives — so you stop paying for what you don't use.

All marketplaces in one app.

Fud AI is a free, open-source, privacy-first calorie and nutrition tracker for iOS and Android. Log meals from photos, barcodes, voice, text, Siri, or manual entry; estimate calories, macros, and nutrients using your own AI provider; track weight, body fat, workouts, and water; and optionally sync with Apple Health or Health Connect. No account, ads, or subscription.

PrivateVault — Zero-Knowledge: fully offline military-grade Android document vault. Stores sensitive files (PDFs, IDs, passports, medical records, photos) locally with AES-256 encryption, biometric unlock, auto-lock, screenshot blocking & root detection. Zero cloud, accounts, tracking or internet. Privacy is the product: no data collection, analytics or servers. Free tier (10 docs) + one-time premium for unlimited. Perfect for bank-level security without compromising your data.

DLV Guide is a high-performing mobile app with a 4.8★ rating and £112,000+ in revenue over 2+ years, proving strong product-market fit. Growth opportunities include hundreds of user-requested features, improved ASO and marketing to reach new players, and increased ad revenue through better placements and rewarded ads. Selling due to limited time to continue scaling.

Turn form submissions into structured workflows that start work automatically. Designed for teams building high-velocity operational workflows.

Write French you're not afraid to send.