Solidus is designed to work entirely on your device. Your expenses, categories, budgets, and other financial data are stored locally on your phone and are never sent to us or to any server we control. We do not operate a backend, do not require an account, and do not have access to your financial data.
We do not collect, store, or have access to:
All of the above stays on your device, stored in the app's local database. If you use the "Backup and restore" feature, the backup file is created on your device and shared only to the destination you choose (such as Files, Google Drive, or iCloud) — we do not receive a copy.
The free version of Solidus displays ads served by Google AdMob. AdMob may collect:
On iOS, we ask for your permission via Apple's App Tracking Transparency framework before AdMob uses your device's advertising identifier for personalized ads. You can decline this, in which case you'll see non-personalized ads instead.
For more information on how Google handles this data, see Google's Privacy Policy and How Google uses information from sites or apps that use our services.
Solidus can send local reminders (daily logging nudges, streak alerts, bill due-date reminders). These are scheduled entirely on your device and do not involve any remote server or push notification service collecting your data.
| Permission | Why we ask |
|---|---|
| Camera / Photo Library | To let you attach a photo of a receipt to an expense entry. The photo is stored locally on your device only. |
| Notifications | To send local reminders you've chosen to enable (daily nudge, streak alerts, bill reminders). |
| App Tracking Transparency (iOS) | To request permission before showing personalized ads via AdMob. |
You can decline any of these permissions; the app will continue to work, with the specific feature simply unavailable.
Since all financial data is stored locally on your device, you control it directly:
Solidus is not directed at children under 13 (or the relevant age of digital consent in your region), and we do not knowingly collect information from children.
We may update this Privacy Policy from time to time. Changes will be reflected by updating the "Last updated" date above.