When emotion takes over, the first thing to protect is the standard you set for yourself.
Principle Keeper is a trading routine app that helps you write your rules, see them, hear them repeated, and return to them before your next decision.
■ Write your own principles and collections
Keep each rule short and clear, arrange them in the order you need, and group them into collections such as Before the Market, After a Loss, or Stock Selection. Open a collection to focus only on the principles that matter in that moment.
■ Repeat principles with device voice
Listen to all principles or only the ones you select. Choose a reading language and playback interval. Available voices and quality depend on the voice data installed on your device.
■ Explore trading principle packs
Browse packs for beginner survival, pre-trade preparation, position sizing and loss budgets, FOMO and chasing, revenge trading, overtrading, and other common situations. Add one principle or an entire pack to your list.
■ Take a moment
When your judgment feels unsteady or you need a moment of calm, use the center button to slow your breathing and rest with gentle music.
■ Principle Community
Anyone can browse shared principles without signing in. With Google sign-in, you can create a public nickname and optional profile photo, share a principle, support a post, save a shared principle to your list, or report content. The community is currently Korean-first, so most posts may be in Korean.
■ See your rules after unlocking
On Android, you can allow display-over-other-apps and notification access so Principle Keeper can open after you unlock your screen. You can turn this feature off at any time in Settings.
Personal principles and collections are stored on your device. Uninstalling the app removes that local personal data. Community posts and account information are handled separately under the app's policies.
The app interface is available in Korean and English. Principle Keeper does not provide financial advice, stock recommendations, or promise investment results. All investment decisions and risks remain your responsibility.
See, hear, and return to your trading rules before emotion takes over.