File Extension Library


.SD4 File Extension

  • Developer by: Programming Sunrise
  • Category: Database Files

What is an .SD4 file?

.SD4 file extension is created by Programming Sunrise. .SD4 has been classified as Database Files.

.SD4 is Smart Diary Suite database

The sd4 file extension is associated with the Smart Diary Suite, a scheduling utility for Windows that can be used as personal organizer, a secret diary, a health diary, nutritional tracker, health monitor, contacts organizer, schedule software, tasks manager, medication reminder etc.

The sd4 file stores database for SDS version 4.


How to open:

Use compatible tools to work with *.sd4 files.

How to convert:

Probably can be exported to other formats.

How to Open .SD4 file on different platforms

Open .SD4 File on Windows

  • Right-click a .SD4
  • Left-click "Open With" > "Choose another app"
  • Select the program that opens .SD4 file and Select check box "Always use this app to open .SD4 files" Press "Ok"

Open .SD4 File on Mac

  • Right-click (or Ctrl + Left-click) the .SD4 file
  • Click "Open With" > "Other.."
  • Then choose another program from the app list and press "Open"
  • Select check box "Turn on" for "Always open in app"

Open .SD4 File on Linux

Right click on the .SD4 file, choose "Open with" and select a program from the list above

Open .SD4 File on iPhone

Select a file. If you don't see an application to open the .SD4 file, tap "Share" and choose the right app.
Method 2
Save the file. Then open the app «Files». Touch and hold the file, then release your finger. You will see a black menu bar. After that tap "Share" and select an application.

Open .SD4 File on Android

Tap the Settings icon on an Android smartphone, then select «Applications». Click the Settings icon in the upper right corner of the screen, to change the default apps.
If you want to open, edit, save or even convert .SD4 files on Android, then your best bet is to download one of the dedicated apps available on Google Play.

How to fix problems with .SD4 files

  1. You need to update the application that you normally use to open .SD4 files. Only the latest version of the software supports the current .SD4 file format
  2. You need to check the .SD4 file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)