I've used Indiegogo to back a number of projects over the last 2 years.
The first project was supposed to ship in April 2016. Latest project updates show that the first 100 production units for the developer's local market should be ready about now and they will test these before ordering a second batch for international orders. Slow, but I remain optimistic.
The second one was due to ship early 2016, but shipped early 2017 instead. It works well.
The third one was due to ship April 2016. The developers went very quiet about 3 months ago. Reviews are poor.
The fourth one shipped a couple of months late, but works well.
The fifth arrived 6 months late, and sucked. Reviews are consistently awful and promised firmware updates to fix issues made little difference. The company's advise was to upgrade to their new and improved model for a mere 70% more than you have already paid, and throw away your original. The original developer has gone to ground and the support team has just been fired according to some very angry Facebook posts from the staff, advising they were told to destroy all records before they left the building.
The sixth project announced last week that they had hit some unexpected issues getting their product certified by Apple, and had run out of money. No product will be shipped and no refunds will be issued. I respect their honesty, at least.
The seventh project has supposedly been shipped to me. After 3 months, they said they would ship another one to me. Requests for tracking links have gone unanswered. Reviews are mixed.
The eight project I'm still awaiting delivery on. Reviews are mixed.
Summary:
Successfully fulfilled projects that work as advertised: 2 out of 8 projects
Still awaiting items items, and remaining optimistic despite delays: 2 out of 8 projects
Money considered flushed down the toilet: 4 out of 8 projects
I backed these projects in a short space of time, and in hindsight I should have been more conservative. Projects like this always carry some risk as product development is generally not yet complete and there can be a myriad of things that can go wrong. If you cannot accept the risk the product does not ship or does not work completely as advertised, do not back the project.
I believe Kickstarter requires you to have a working prototype, where Indiegogo does not.
What has your experience been of crowdfunding?