Products

iOS

App Reports

App Store acquisition and AdMob revenue in one view

An on-device dashboard for indie iOS developers. Bring App Store Connect acquisition and downloads together with Google AdMob revenue, impressions, and eCPM by app, then start the morning with yesterday's close briefing. No backend: API credentials stay in the iPhone Keychain.

macOS

Krypt

Secure secret management for macOS

A menu bar app that securely manages API keys, passwords, and secure notes with macOS Keychain. Quick access meets strong security.

iOS

Bulbul

A vault with no master password — every code opens a different space

Bulbul is a private file vault with no master password. There is no separate "unlock screen" — what you type IS the vault. 1234, 0000, 9876 — any digits instantly open a fresh space, with no "main" or "decoy" hierarchy.

iOS

Arcade95

Classic desktop games inside a retro arcade workspace

A retro arcade for iPhone and iPad with a Windows-style single-window desktop, a broad native set of classic games and accessory apps, and 12 screensavers. It supports portrait on iPhone, portrait and landscape on iPad, plus Game Center leaderboards and async matches.

iOS

Hypno App

Visual hypnosis sessions

A visual relaxation app for iPhone with hypnotic scenes like spirals, pendulums, candlelight, and breathing orbs for short focus sessions.

macOS

CaffeIn

Prevent sleep mode with automatic mouse movement

A macOS menu bar app that prevents sleep mode by auto-moving the mouse. Toggle with a simple click or global hotkey, and customize natural mouse movements with detailed settings. Supports 7 languages.

iOS

Shopping Calculator

Shop smarter, total faster

A shopping calculator that totals prices and quantities in real-time. Sync history across devices with iCloud and convert currencies for international shopping.

iOS

Today in History

What happened today in history?

An educational app that explores Korean historical events on a selected date through cards. Discover new historical moments every day with tag-based filtering and home widgets.

macOS

MarkRight

A desktop editor that translates Markdown in real-time

A desktop editor that translates Markdown documents in real-time. Edit and preview translations simultaneously in a split-screen view with fast initial loading. Supports 14 languages.

macOS / iOS

Claude Timer

Track Claude Code API usage at a glance

A macOS + iOS widget app that monitors Claude Code API usage. Check directly from the macOS menu bar and auto-sync to iOS via iCloud.

iOS

Hanja Test Study

Master Hanja from Level 8 to Special — complete exam prep

A study app for the Korean Hanja Proficiency Test covering all levels (Level 8 to Special). Browse, search, and practice writing Hanja with level-based lists, favorites, and a grid-background drawing canvas.

iOS

Korean Lunar Calendar

The most accurate Korean lunar calendar, powered by KASI data

Displays dates based on the Korean lunar calendar — not the Chinese one — so you can accurately check traditional holidays like Seollal and Chuseok, as well as lunar birthdays. Manage schedules in a lunar month grid and quickly check today's lunar date with widgets.

iOS

Kafka

A literary app to explore Kafka's works, quotes, and chronicle

An iOS app to explore Franz Kafka's works, quotes, and timeline while keeping a personal journal. Connect quotes to works, browse chronological events, and manage your reading journal all in one place.

iOS

AppMemo

Record app ideas and develop them with AI

An iOS app to record app ideas and develop them with AI. Systematically manage ideas from screen design and wireframe generation to AI icon creation, with ZIP backup/restore for safe data storage.

macOS

Icon Resizer

Generate a complete app icon set from a single image

Drag and drop a single image to auto-generate 10 sizes needed for macOS app icons, exported as an icon set folder ready for Xcode.

iOS

TimeBoxing

Plan your day with timeboxing

An iOS planner app that systematically plans your day in 3 steps: brain dump → priorities → timeboxing. Drag tasks into 30-minute time slots from 5 AM to 11 PM, and boost execution with scheduled notifications and PDF sharing.

Create standard housing lease contracts online and download as PDF

A web application to fill out the standard Korean housing lease contract online and download it as a PDF. Enter details in a form identical to the official template and instantly generate a high-resolution PDF.

iOS

Simple Censor

A mosaic filter app for busy people

A simple image censoring app that auto-detects faces for mosaic effects or lets you manually drag to select areas. Stripped of unnecessary features with an intuitive UI for quick use.

Have you really read it? Admiral Yi Sun-sin's war diary

An app to easily read Admiral Yi Sun-sin's famous wartime diary. Enjoy the general's records from the Imjin War with modern Korean translations and text-to-speech (TTS).

iOS

Nietzsche

Explore Nietzsche's life, works, and philosophy

An iOS app for deep exploration of Friedrich Nietzsche's life, works, philosophical concepts, figures, and quotes. Offers tiered content from beginner to academic level with parallel German original text reading.

iOS

Respawn

If you went back in time, what would you do?

What if you went back in time — how would you survive and succeed? Select a date and see a timeline of major events from that point to the present, with survival strategies and winning lottery numbers for each event.

A custom keyboard that transforms text with AI personas

An iOS custom keyboard app that creates personas and transforms text right from the keyboard. Instantly rewrite messages in business, casual, humor, and more tones. Supports multiple LLMs from on-device AI to OpenAI and Anthropic.

iOS

Shutterwake

The fastest camera, straight from the Lock Screen

An iOS 26-only camera app that captures straight from the Lock Screen — no unlock required. One tap from a Control Center control or Lock Screen widget opens the camera, and the Action button or volume buttons fire the shutter.

iOS

SOSLight

Blink your flashlight in Morse code for help

A flashlight-as-beacon app that blinks International Morse Code so rescuers can spot your signal in the dark. Built-in emergency presets (SOS, HELP, FIRE, MAYDAY) and automatic Morse conversion of any custom message.

iOS

BookMemo

Brush quotes from paper books with one photo

Capture passages from paper books the shortest possible way: one photo, two finger gestures. Snap a page with your camera, then brush the words you love — the way you would on paper with a highlighter. Apple Vision OCR reads only the area you painted (Korean and English), and the result is saved as an excerpt under the book it came from. No forced word/line selection — your highlight, your shape. BookMemo is built as a reading companion, not another notes app. 100% on-device, no account, no servers.

iOS

Dino Battler

Raise, evolve, and battle pixel dinosaurs on a retro device

A virtual pet game where you raise a tiny dinosaur inside a retro LCD device. How you feed, train, and care for it shapes which of 36 species your egg evolves into, then you prove your dino in the ranked Arena and local link battles.

iOS

DinoPedia

A natural history museum catalog in your pocket

A museum-quality dinosaur encyclopedia with large photo-real images, detailed stats, and curated facts. Filter by era (Triassic, Jurassic, Cretaceous) and diet (carnivore, herbivore, omnivore), search by scientific name, and build your own collection with favorites. View fossil discovery sites on a map, and watch animated dinosaur scenes in Gallery mode. Works completely offline with no network required.

iOS

Bestiary

An encyclopedia of 412 mythical creatures from 76 countries

An encyclopedia of 412 beings from the myths and folklore of 76 countries — yokai, ghosts, deities, fairies, and mysteries without a familiar name — gathered with cinematic illustrations. Roam a dark world map to discover the legends rooted in each country, and read each creature's origins and lore in an immersive detail view. Collect your favorites and meet a new Creature of the Day every day.

iOS

Hangul Donguibogam

A fully offline reader of the Donguibogam's five books in original text and AI translation

A fully offline reader that presents the actual five-book structure of the Joseon medical classic Donguibogam (1613) alongside concept- and wellness-focused excerpts in both classical Chinese and AI-generated Korean translation. Explore from book to entry to excerpt. Prescriptions and dosages are intentionally excluded for a study-and-appreciation focus, and with no network or account, your data never leaves the device.

iOS

Grudge Ledger

A private black ledger for grudges you don't intend to forget

A private journal for recording grudges by alias only, watching how long you've carried them tick by in elapsed time, and settling the score with a written account of how you got even. No real names, photos, or contacts — just aliases, initials, or emoji — opening with an onboarding story drawn from the legend of Wu Zixu. No network, account, or cloud: everything stays on your device.

iOS

GukYoungSu

Endless quizzes where your grade rises and falls with your score

Solve questions to earn points, and your grade level climbs as points add up. Practice Korean, English, and Math endlessly in one app — from 1st grade through 12th — and see exactly where you stand through your score. A grade that rises when you're right and falls when you're wrong keeps you coming back every day. Works fully offline, with no account, login, or internet.

iOS

DreamMemo: Dream Journal

Capture dreams the instant you wake. Find meaning.

The moment you wake, capture the dream before it slips away. DreamMemo detects when you've woken up, starts recording, and opens the keyboard so you can speak or write before your morning mind catches up. On-device AI reflects your dream's symbols and emotions right there — no account, no cloud, everything stays on your iPhone.

iOS

DopamineBalancer

Earn your screen time by learning

A digital self-control app that makes you earn dopamine-app time — Instagram, YouTube, games — with learning quizzes. Solve quizzes in your downtime to bank minutes into a 'time wallet', which drains as you use those apps. When the balance hits zero, iOS Screen Time locks the apps, and only more quizzes or one emergency ad reopens them. It turns unconscious scrolling into a conscious learning trade, guided by a riddle-giving Sphinx mascot from onboarding to lock and unlock.