Light Meter: Lux-525 Pro 4+

I tried this app with high hopes but the ppfd is so much off from what spider farmer claims that it’s unusable. also have to pay monthly feels like a rip off

Thank you for your feedback. We're sorry to hear about the PPFD discrepancies and any confusion regarding our subscription plans. Our team is committed to improving the app's accuracy and will investigate the issue you've encountered.



Please note that we offer a lifetime plan in addition to monthly payments to provide more flexibility for our users. We also have a free version available that includes many useful features. We apologize if these options were not clear, and we appreciate your review as it helps us enhance our offerings.



We would appreciate it if you could provide us with a little more information about the conditions under which the measurements were taken. This will help us better understand and resolve the issue. To address your concerns and provide further assistance, we encourage you to reach out to our support team (Menu - Contact Us). We're always happy to help.

The App has no instructions or documentation to show how to use the meter. Also super limited capabilities unless you buy the paid version. I will be deleting the app from my device.

Thank you for taking the time to provide your valuable feedback. We apologize for any inconvenience you may have experienced due to the lack of instructions.


We have endeavored to make our app as simple and intuitive as possible, but we also understand the importance of detailed instructions. Rest assured, we will work on adding them in future versions.


In addition, we would like to emphasize that the free version offers all the basic features, while the premium version includes a 3-day free trial to explore all the additional features.


We appreciate your input and hope you will consider giving our app another try in the future. If you have any further suggestions or questions, please feel free to reach out to us.

I tried to see if this could replace a calibrated light meter, but the answer is a definite NO. The measured values are 1/2 to 1/3 of what the light meter reads for a LED test source. At very high flux levels (~10 klux) the values are lower by a factor of 10.

Thank you for your review. We're sorry to hear that our Light Meter app didn't meet your expectations. We've conducted numerous measurements and comparisons with calibrated meters to ensure accuracy, especially for common lighting conditions. We value your feedback and will investigate this further to improve our app's performance.