Privacy Policy

For all CashDublo apps. Last updated: November 2026.

This page explains, in plain words, what happens with your information when you use a CashDublo app. The short version: the things you make in the apps stay yours, on your device. The apps also send the small check-ins explained below.

The things you make stay on your device

The apps keep the things you make on your phone or your computer. Your stock lists and settings in Cash Portfolio and AI Cash Portfolio, your songs, star ratings and moods in Player, your saved texts in TTS Widget, your lessons and progress in SAY, your stories and photos in Travel Journal, your trails in GO, and your notes, sketches and files in Dear Idea all live on the device where you made them.

No CashDublo accounts

CashDublo does not run accounts for these apps. There is no sign-up.

Update check-ins and the update log

When a CashDublo app checks for updates, it sends a small check-in to the CashDublo update log: the name of the app, the version of the app, and a random ID number the app made up the first time it was opened. The Player app also sends the list of folders it provides.

CashDublo updates are secured with an update key. The first time an app takes a secure update, the update server makes a private key for that one install and the app keeps it. After that, the app shows its key with each check-in so the server knows the update is going to the right install. The public log holds only a fingerprint of the key, never the key itself. The log also records each update download: which app, and which version it moved from and to.

Check-ins may also carry daily totals: how many seconds the app was used in the foreground, how many seconds it ran in the background, the app's share of the battery it used that day, and how much battery its updates and check-ins used. These are totals only. The log never holds what you did in an app, which screens you opened, or any content.

An app may also send its error log entries with a check-in. Each entry holds the app name, the app version, an error code, the time the error happened, and the raw error line. Error entries never hold anything you typed, opened, or made in an app - only that an error happened, and what the error said.

A check-in may also carry facts about that one copy of the app: the install ID the app made for that copy, what kind of phone it is running on (the phone's maker and model, in the phone's own words), the address the copy was downloaded from when the copy knows it, which store or place the copy was downloaded from when the copy knows it (for example the Google Play Store, or an install file opened by hand), what installed it, and the time the copy was first installed. These facts are about the copy of the app only. They are never about you, and they never hold anything you typed, opened, or made in an app. A copy that does not know one of these facts simply does not send it - nothing is guessed.

The install ID itself tells three small things on its face: which app it belongs to, the kind of device (phone, or a Mac or Windows computer), and who made the device - each shown as a short code. The rest of the ID is random and says nothing about you or your phone.

Check-ins and error reports are sent quietly in the background. An app never pops up a message or asks a question just to send them. You can see your app's User ID and its error log inside the app's own settings.

If you turn off "Update from GitHub" in an app's settings, that app stops checking in, and its usage and battery totals stop with the check-ins. Its error reports stop too, because they travel with the check-ins.

No names, email addresses, or personal information are ever sent. The log is kept in a public folder on GitHub (user-logging-data, in the cashdublo-updates repo), where anyone can read it.

Nothing is sold

Your information is not sold, rented, or shared with advertisers. The apps carry no ads and no trackers.

Keys you provide yourself

Some features let you type in your own key for an outside service - for example a Finnhub key for live stock prices, or an Anthropic key for AI help. When you use one of those features, the app talks straight from your device to that service using your key, under that service's own privacy policy. Your key is stored only on your device. It is never sent to CashDublo.

Music files and ratings

Player and Apple2Player work with the music files on your own devices. Your songs, tags, star ratings and moods stay on your phone and your computer. Apple2Player moves files only between your own computer and your own phone, over your own cable or your own home network.

Moving your own files

Some apps let you save a backup file or share something out. That only happens when you tap the button yourself, and the file goes where you send it.

Questions

If you have any concerns, please contact CashDublo at CashDublo@gmail.com.