The Virtual Tours app offers users the opportunity to explore landmarks from various countries, including Turkey, Egypt, Saudi Arabia, Syria, Morocco, Kuwait, Yemen, Macedonia, Holland, Belgium, France, Italy, Greece, and even space. With over a thousand 360-degree panoramic images, users can examine Islamic architecture, visit museums, tombs, palaces, baths, castles, towers, old houses, squares, parks, nature, religious sites, ancient cities, and other places. The app does not require a gyroscope or compass to use, and users can set up their viewer for other VR apps using the integrated QR code scanner.<br/><br/>The app offers viewer presets for Google Cardboard & Daydream View, Gear VR, VRIZZMO Revolt, DCSVR, Homido, Ant VR, Go4D C1-Glass, Small Mojing, VR fold, Wearality Sky, Durovis Dive 5, VR BOX, Baofeng Storm II, ColorCross VR, Nibiru/Soyan, Geeach, and Ritech 3D. Users can also use the unique VR settings option to make corrections on the eye separation, vertical center, screen to lens distance, barrel distortion, chromatic aberration, and field of view. The app also offers 3D panoramas, which are more realistic but can be turned off if they make the user feel dizzy.<br/><br/>The app ensures that panoramas are produced without stitching errors, even when looking at the ground. Stereoscopic panoramas are also error-free, which is a challenging task. Users can move their mobile device around to explore the environment, use their fingers to pan around or zoom in and out, tap the screen to see hotspots, and keep their finger on the screen to prevent screen rotation. When in VR mode, users can look down to exit, and if the scene is turning by itself, leaving the device on the table for about 30 seconds will trigger auto-calibration of the gyroscope sensor.<br/><br/>Overall, the Virtual Tours app offers users a unique and immersive experience of exploring landmarks from various countries and even space. The app is user-friendly and does not require a gyroscope or compass to use. Users can also set up their viewer for other VR apps using the integrated QR code scanner and viewer presets. The app ensures that panoramas are produced without stitching errors and offers 3D panoramas that can be turned off if they make the user feel dizzy.