PhilNote: Here are the 3 apps that don't involve placing or measuring things. There are links to all 10 in the article.
3. Giphy World
If you love GIFs, check out the repository Giphy. Its latest app, Giphy World, lets you add AR-powered 3D GIFs to the world around you and you can record video, too. You then share your creations with friends who also have the app, enabling you to communicate in AR.
7. NightSky
Night Sky lets you identify stars, planets, constellations, and satellites. It has a "Grand Orrery" premium feature (costs £1.99/$1.99 a month) that lets you see the Solar System in your home. You can walk around it, zoom in on planets, and explore - all in AR.
9. Fitness AR
This app uses social fitness-tracking app Strava's API. With Fitness AR, athletes can see their routes on a 3D terrain map powered by Mapbox. Another cool feature is screen recording. With it, you pan and zoom through routes and create a video that can be shared.
See the full story here: https://www.pocket-lint.com/apps/news/142315-best-arkit-enabled-augmented-reality-apps-for-iphone-ipad