Can you recommend a camera-based search app for identifying objects while I'm in the field?

Yes — if you want a camera-based search app for identifying objects in the field, here are some solid options depending on what you mean by “objects”:

Best general-purpose options

• Google Lens — Great for plants, animals, landmarks, products, text, and everyday objects. Fast and widely available on Android/iPhone.
• Bing Visual Search — Good for identifying objects, shopping-style searches, and finding visually similar items.
• Apple Visual Lookup — Built into iPhone/iPad; works well for plants, pets, landmarks, and some object recognition.

Better for nature / field work

• iNaturalist — Excellent for identifying plants, insects, fungi, and animals. Very useful if you’re outdoors and need community-backed identifications.
• Seek by iNaturalist — A simpler, more camera-first app for quick species identification.

If you mean industrial / equipment / unknown objects

• Google Lens or Bing Visual Search are usually the best starting points.
• If you need more specialized recognition, you may want a domain-specific app based on your field.

My quick recommendation

• General objects: Google Lens
• Plants/animals in the field: iNaturalist or Seek
• iPhone built-in option: Apple Visual Lookup

If you want, I can also recommend the best app for your specific field — for example botany, archaeology, construction, wildlife, or retail.