I built an iPhone app that estimates calories/macros from a meal photo. Would you trust this?

I built a small iPhone app that estimates calories, protein, carbs, and fat from a meal photo or a short text description.

It is meant as a quick guide, not a medical tool or a replacement for a food scale. I’m trying to understand whether the idea feels useful and trustworthy.

For people who track food or calories: would you use something like this?

What would make you trust or not trust the result?