Support
Last updated: July 27, 2026
Thank you for using SaBooks. Active support is available, and feature requests are genuinely welcome — the app is still evolving and your feedback shapes it. The fastest way to reach us is by email.
Contact
Email: michalsabo9@gmail.com
Developer: michalsabo.com — more about the person behind SaBooks on the About page.
We aim to respond within 2 business days. Please include your device model, OS version, and (if applicable) screenshots or steps to reproduce.
Common Questions
How do I sign in?
SaBooks supports Google Sign-In and Sign in with Apple. On the login screen, tap the provider you want to use. A private SaBooks account is created automatically the first time you sign in. The same email signs you into the same data set across both providers.
Does signing in with Google or Apple give SaBooks access to my account?
No. You authenticate on Google’s or Apple’s own sign-in page, and they hand back a single thing: a verified email address. SaBooks never sees your password, and it requests no access to Gmail, Google Drive, Contacts, Calendar, Photos, or iCloud — it cannot read your mail or send email as you, and nothing is written back to your account. Because sign-in is delegated this way, SaBooks stores no passwords at all, so there is no password database here to be breached, and your sign-in is protected by your provider’s own two-factor authentication. You can revoke access at any time from your Google Account or Apple ID security settings. Apple’s “Hide My Email” is fully supported. There is more detail on the About page and in the Privacy Policy.
Where is my data stored?
All of your records are stored privately in Google Firestore, scoped to your authenticated email. No other SaBooks user can read or write your data, and we (the developers) do not access individual records. See our Privacy Policy for details.
How do I send an invoice or proposal?
Open the document and tap the “Email” button on the edit screen. On iOS and Android, this opens your default mail composer with the PDF attached. If no mail account is configured, the share sheet opens instead and the recipient’s email address is copied to your clipboard so you can paste it into the “To” field.
Why does an invoice still show as “Sent” when I cancelled the email?
Mobile email composers do not reliably tell apps whether a message was actually sent or cancelled. SaBooks marks a document as sent the moment you tap Email. If you cancelled, open the document and tap “Reset sent date” at the bottom of the edit screen to revert it.
How do I record a payment?
Open an invoice and tap “Create Payment”. The new payment will be linked to that invoice automatically. You can also create payments directly from the Payments tab and search for the invoice you want. The invoice’s “Amount Paid” and balance due update automatically.
Where do I manage clients and projects?
Open the Account tab and tap “Clients” or “Projects”. Add, edit, or remove entries there; they become selectable when you create proposals, invoices, and payments. You can also add a new client or project on the fly with the “+” button next to those fields.
Can I use SaBooks on more than one device?
Yes. Your data is tied to your email address, not to a device, so signing in on your phone, tablet, or a desktop browser shows the same records. The web version at sabooks.app can also be installed to your home screen or desktop.
Feature requests
The app is actively maintained and the roadmap is largely community-driven. If something is awkward, missing, or could be better, please write in. Small changes often ship within days.
How do I delete my account?
Open the app and go to Account → Danger Zone, type DELETE, and confirm. This wipes every record under your account immediately. Alternatively, email michalsabo9@gmail.com from the address associated with your account.
Reporting a bug.
Please include your device model, OS version, and the steps you took before the issue happened. Screenshots are very welcome.