Three small Android apps, built the same way: everything happens on the device, there is no account to make, nothing is uploaded, and you pay once rather than every month. Billing for your business, a lock for your apps, a vault for your files.
Each has its own page with a full tour and user guide - the same detail you would get after using it for a month, before you install anything.
GST invoices, quotations and credit notes from your phone, fully offline. Share the PDF on WhatsApp and hand your CA an Excel workbook at the end of the quarter.
Puts a PIN or fingerprint in front of the apps you choose - WhatsApp, your gallery, your banking app - and leaves everything else alone.
A private vault for photos, videos and documents. Files are encrypted with AES-256-GCM on the way in and opened again only for your passcode.
Want to know when App Lock and Secure Vault arrive? Send us a line and we will tell you once - no list, no newsletter.
The app that is out today. App Lock and Secure Vault have their own galleries on their pages.
Your invoices, your locked apps and your files stay on your phone. There is no server holding them, because there is no server.
Nothing asks you to sign up, sign in, or hand over an email address to get started. Install and use.
A free trial, then a single purchase through Google Play. No subscription, no tiers, no feature held hostage.
Each app's page states what it cannot do as clearly as what it can - including the limits that a marketing page would normally leave out.
One per app, because the apps do genuinely different things. The short version is the same for all three: what you put into the app stays on your phone, and we never see it.
Last updated: July 2026
Welcome to InvoiceOnGo by Waveclues ("we," "our," or "us"). We are committed to protecting your privacy and ensuring your business data remains safe. This policy outlines how the mobile application collects, uses and safeguards information when you use our GST billing and invoicing service.
Solely to deliver the billing service: generating GST invoices and reports, letting you back up your own data to a location you choose, and improving the app's stability.
Your business and customer data is stored on your device, in the app's own storage. Backups are written to the destination you pick - your Google Drive, OneDrive, Dropbox or local storage - and go directly there. We do not sell, rent or monetise your financial or client data, and we do not receive a copy of it.
Google Play handles purchases. If you choose to configure the optional AI tax assistant with your own API key, the item description text for that one suggestion is sent to the provider and address you saved that key for, and nowhere else. The app has no analytics, no advertising and no crash reporting.
Questions about this policy: support@waveclues.com.
Last updated: September 2026
App Lock by Waveclues locks the apps you choose behind a PIN or fingerprint. It has no account, no server and no analytics, and nothing it holds ever leaves your phone.
App Lock uses Android's usage-access permission to read the package name of the app currently in the foreground, so it knows when to ask for your PIN. It does not and cannot read the contents of any app, your messages, your keystrokes or your screen. It does not use an accessibility service. This information is used in the moment and is not recorded or transmitted.
Camera access is optional and is requested only when you switch on the intruder-photo setting - never at startup. Photos are stored encrypted on the device, readable only after a correct unlock, and are deleted when you delete the entry.
Nothing. There is no account, no cloud sync, no analytics, no advertising and no crash reporting. The only network activity involved is Google Play processing your one-time purchase, which Google handles under its own policy.
Settings → Reset App Lock deletes your PIN, recovery question, chosen apps and attempt history. Uninstalling the app removes everything it holds.
Last updated: September 2026
Secure Vault by Waveclues is an offline, encrypted file vault. The app does not hold Android's internet permission at all, so it is not technically capable of sending your files anywhere.
Nothing, and the app has no means to send it. No account, no server, no sync, no analytics, no advertising, no crash reporting. Android's own automatic backup is switched off for this app, so your vault is never copied to a Google account. The only network activity involved is Google Play processing your one-time purchase.
Exporting a file, or using "Open with" or Share, writes an unencrypted copy outside the vault, at your instruction and after a warning. Secure Vault cannot protect that copy once it leaves.
Settings → Erase vault permanently destroys everything in the vault after a 24-hour delay, which any successful unlock cancels. Uninstalling the app removes everything it holds - so export or back up anything you want to keep first.
Questions about GST billing, a lock that will not stay on, a vault that will not restore - or just to hear when the two new apps reach the Play Store.