Thoughtfully simple
Each app does one useful thing well, with a light footprint and a clean interface.
Three languages
Fully localized in Korean, English, and Japanese out of the box.
Free to start
Free with ads; an optional one-time purchase removes ads and unlocks premium.
Privacy-conscious
A clear privacy policy and in-app ad-consent controls for every user.
About us
NeoAndroid in Cos. is an independent Android app studio. We design, build, and publish 18 free mobile apps and games on Google Play, localized in Korean, English, and Japanese. Each app is made to do one simple, useful thing well — a lunar calendar, measuring tools, a voice recorder, casual games, and more.
NeoAndroid in Cos.는 개인 안드로이드 앱 스튜디오입니다. 음력 달력, 측정 도구, 음성 녹음기, 캐주얼 게임 등 18종의 무료 앱을 한국어·영어·일본어로 구글 플레이에 출시·운영하고 있습니다.
Our apps
18 apps across everyday categories — calendar, audio, measuring tools, display, camera, utilities, and games.
A closer look
A few real screens from our apps on Google Play. Scroll sideways to browse.
Business model
Our apps are free to download. We earn revenue in two ways:
Advertising
In-app ads served through Google AdMob, with user ad-consent controls.
In-app purchases
An optional one-time purchase (and, in some apps, a subscription) to remove ads and unlock premium features, via Google Play Billing.
모든 앱은 무료로 내려받을 수 있으며, 수익은 Google AdMob 광고와, 광고 제거·프리미엄 기능을 여는 구글 플레이 인앱 결제에서 발생합니다.
How we use Google Ads & the Google Ads API
To acquire new users for our apps, we run Google App campaigns (app-install campaigns) on our own Google Ads account.
The Google Ads API is used strictly as an internal tool operated on our own Google Ads account only. With it we:
- Upload and update ad creative assets for our own App campaigns — text assets (headlines and descriptions in Korean, English, and Japanese) and image assets (1.91:1, 1:1, and 4:5) that we produce in-house.
- Read our own account and campaign structure only to attach those assets.
We do not offer this tool, any dashboard, or any API access to third parties or external clients, and we do not resell, share, or transfer any Google Ads data. Usage is low-volume and limited to maintaining creatives for our own apps.
신규 사용자 확보를 위해 자사 계정에서 구글 앱 캠페인을 운영하며, Google Ads API는 오직 자사 계정에서만 동작하는 내부 도구로 광고 소재(한/영/일 텍스트 및 1.91:1·1:1·4:5 이미지)를 업로드·갱신하는 데 사용합니다. 제3자에게 도구·API 접근을 제공하거나 데이터를 재판매·공유하지 않습니다.