Your reusable prompt library

Your best prompts. Ready to use again.

Save your best prompts. Turn repeated details into variables and reuse them on Android. The Chrome extension is in preparation.

AI requests require internet access and your own API account. Provider usage is billed separately.

Full Prompt Secure library screen on Android, with search, starter templates and navigation. English interface.
Actual Android app screen · English interface

Save. Personalize. Reuse.

Keep your prompts organized
Reusable templates with variables
Use your own API key
Cloud sync after sign-in
Interactive sample — no AI

Try a prompt template

Fill in the fields and see your finished text.

Product introduction email

Variables

Unique variables detected: 4

How this sample works

A repeated variable receives the same value. Values are inserted once as literal text; this web sample never processes them as another template.

The {{CLIPBOARD_TEXT}} marker is disabled in this sample. The sample never reads your clipboard; Copy writes only after you click it.

Template and each value: up to 1,000 characters. Up to 10 unique variable fields.

Result

Your value Automatic value

Write a short email to Alex Morgan at Example Co. Explain how Prompt Secure helps with organizing prompts. Date: 31.10.2026.
This demo processes text in your browser. Its content is not sent to a server. It does not generate AI responses.
What you get

From a saved idea to a ready prompt

Vault

A library you can return to.

Keep useful prompts in one place instead of searching through old conversations. Local library features remain available offline; AI and sync need a connection.

Detail of the Android library start screen, showing starter templates and the Add prompt button.
Actual Android app screen detail · English interfaceOpen full screenshot (opens in a new tab)
Templates

One template, many uses.

Swap in new details using variables, without rewriting the whole prompt.

Prompt Secure new-prompt screen on Android, showing the prompt text field and the tip to type [Variable] to mark a value to fill in later.
Actual Android app screen detail · English interfaceOpen full screenshot (opens in a new tab)
BYOK

Your provider, your API account.

Connect OpenAI or Anthropic and manage your provider usage separately.

Android API settings showing OpenAI and Anthropic key configuration status, without key values.
Actual Android app screen detail · English interfaceOpen full screenshot (opens in a new tab)
Arena

Compare answers side by side.

Use the same prompt to compare supported models, with estimated tokens and costs.

Same prompt sent to two providersWrite 3 ideas to reduce cart abandonment.

OpenAI

Illustrative response

  1. Show shipping costs earlier
  2. Shorten checkout to two steps
  3. Send a cart-reminder email
Anthropic

Illustrative response

  1. Offer guest checkout
  2. Show a delivery estimate upfront
  3. Add abandoned-cart support chat
Schematic example · Not a screenshot or an actual AI response
Chrome

Your prompts in the Chrome side panel.

The Chrome Extension is in preparation. Once available, it will let you access your library in a side panel and save selected text with confirmation.

Selected text on page (example)

"Average cart abandonment rate: 68% this quarter."

Saved prompts (example)

  • Cart recovery email
  • Meeting follow-up
  • Bug report template
Schematic example · Not a screenshot or an actual AI response
The problem

Good prompts disappear into old chats

01

Your best prompt gets lost

It is buried somewhere in a chat history you will never scroll back to.

02

You retype the same details

Names, companies, goals — rewritten by hand every single time.

03

It's hard to compare answers

Asking the same question in two tabs and comparing the answers by eye is slow, and mistakes are easy to miss.

How it works

Three steps, every time

01

Save a prompt worth keeping.

02

Turn repeated details into variables.

03

Fill it in, copy it, or send it to your AI provider.

Privacy, honestly explained

What happens to your data depends on what you do

Use local mobile library features on your device. After sign-in, prompts and context data sync to the cloud. When you request an AI response, the request content is sent to your selected API provider. You choose what to include in the prompt.

Without an account Your device

Local library (Android, no account)

Stays on your device. This action doesn't need to sync.

Sign in Supabase

Signed-in account

Prompts and context data sync to our Supabase database and become available on your other signed-in devices. This also applies to Free accounts. The Chrome extension is in preparation.

AI request OpenAI / Anthropic

An AI request you send

The request content goes directly to OpenAI or Anthropic and is authenticated with your API key.

Send a report Prompt Secure backend

Reporting an AI response (optional)

If you explicitly press Send on the report control, an excerpt of that response is sent to our backend. This is a deliberate exception — it does not happen automatically.

  • The local database itself is not encrypted by the app; a PIN lock is not proof that all stored data is encrypted. JSON exports and QR codes can contain plain, readable text.
  • On Android, API keys are stored in secure device storage backed by the Android Keystore; hardware-backed protection depends on the device. The Chrome Extension uses a different storage model and does not get Android Keystore protection.
  • Cloud sync is not an independent backup — deletions can also sync.
  • Smart Context is optional and off by default. When you turn it on, it reads specific supported fields on the page you have open, locally, after Chrome grants site access; it does not read your whole browsing history or every page automatically.

Read the full Privacy Policy →

Where you can use it

Your library, across devices

Coming soon

Android

Not yet available for public download on Google Play.

Coming soon

Chrome Extension

The Chrome Extension is in preparation and not yet available in the Chrome Web Store.

Not available

iOS

Not available. No release date announced.

Pricing

Free to start, Premium when you need more

Premium unlocks Prompt Secure features. OpenAI and Anthropic API usage is billed separately by those providers.

Free
$0
Try the vault and templates
  • Up to 3 of your own prompts
  • Templates with variables
  • Cloud sync after sign-in
  • Connect your own API key
Try a template
Premium
Monthly
$5.99
Annual · −32%
$48.99
Unlocks the full feature set
  • Unlimited prompts in your vault
  • Expert template library in Polish, English and Korean
  • Arena — compare supported AI models side by side
Check availability

Billed annually at $48.99. Save 32% vs. paying monthly.

Lifetime
$69.99
One-time purchase, no renewal

One-time purchase for Premium access, without a recurring subscription. OpenAI and Anthropic API usage is billed separately; credits and separate future products are not included.

Check availability

Reference prices for the US market. Your Google Play region determines the purchase price and currency, not the website language. The store price is authoritative. Prices checked in Google Play on 2026-10-31.

FAQ

Frequently asked questions

Can I use my ChatGPT or Claude subscription?
Prompt Secure needs an API key from your provider account; it does not use your session in the chat app. Check available funds, any API credits included with your plan, and limits in your provider’s API dashboard.
Do I need to create an account?
The local Android library is available without an account. Sign in to synchronize prompts and context data. The Chrome extension requires sign-in and is in preparation.
Does the app work offline?
Local library features on Android work fully without an internet connection. AI requests, cloud sync, and purchases need one.
Does Premium include AI credits?
No. Premium unlocks Prompt Secure features. Any usage of OpenAI or Anthropic through your own API key is billed separately by that provider, outside of Prompt Secure.
What gets sent after I sign in?
Signing in starts cloud sync, including on Free accounts. Prompts and knowledge-base/context documents sync to our Supabase database. See the Privacy Policy for details.
Is everything encrypted locally?
No. On Android, API keys are encrypted in secure device storage backed by the Android Keystore; hardware-backed protection varies by device. The Chrome Extension uses a different storage model and does not use the Android Keystore. The local prompt database itself is not encrypted by the app, and a PIN lock does not mean your data is encrypted.
What do I get with Lifetime?
One-time purchase for Premium access, without a recurring subscription. OpenAI and Anthropic API usage is billed separately; credits and separate future products are not included.
How does Smart Context work?
It is optional and off by default. It will be available in the Chrome Extension, which is in preparation. After you turn it on and Chrome grants access to the current site, it reads specific supported fields on that page, locally, to suggest values for template variables.
How do I delete my account and data?
Use Settings → Account → Delete account in the Android app, or the email request described on the delete-account page. Deleting your account, removing local data, cancelling a subscription, and deleting data held by other services are separate actions — each is explained on that page.

Keep the prompts you want to use again.