I know there is this github repo Https://github.com/alicevision/meshroom. Source: over 2 years ago

You can input your photos into Meshroom using a capable computer or Colab. Even if you're only interested in some of the depthmaps, you'll have to input a full set of images around the object. It will take 2-4 times longer than default but for your usecase you may want to change the 'Downscale' attribute to 1. Source: over 2 years ago

I know this is r/fossdroid, but I don't think there is any Foss Android application capable of that. However, meshroom came into my mind. It is free and open source with linux support. The downside of it is that you can't create the model right in your phone, but you first need to take many photos to then upload to your computer and process. Source: over 2 years ago

This has been used in Video games for the Better part of decade, already. And you can do this yourself without an iphone with lidar, by taking a lot of pictures of an object from various angles, and then use something like meshroom to make a detailed 3d model of it. Source: over 2 years ago

This is using the Iphones LIDAR, (basiacally laser depth sensor) to get accurate data, but it can be done also be done without it, just with a lot of pictures of all around the object, from various angles, and some software like meshroom. Source: over 2 years ago

To add a bit to what others are saying. Mesh mixer is sometimes a great tool for some of this. Source: 9 months ago

Ah right. If you can't get the source file, you could try smoothing them out in meshmixer. Source: 11 months ago

The quickest fix I know is to use the free meshmixer. Source: about 1 year ago

There are programs such as Meshmixer specifically intended to do that, others such as Blender which can do a good job (but beware of missing surfaces or inside-out triangles) and some CAD programs such as Fusion 360 which have the ability to convert meshes. Even Tinkercad can make some changes. It's always better to get a CAD file in a common interchange format such as a STP (STEP) file if you can, though. Source: over 1 year ago

Meshmixer seems to be no longer in developement, with their integration of similar features with fusion360 according to their site https://meshmixer.com/. Source: over 1 year ago