It would be great to see non Amazon purchase options. I understand that would increase the complexity and it might make it more difficult to monetize if you want to add affiliate links, but having more options that might better fit a user could give the tool more use.
I would not purchase any of the options suggested to me by your site. With that said, It's also possible I am not your target demographic.
Nice site, according to the GitHub page, you are using the Reddit free API. I was under the assumption that Reddit no longer had a free API and it was all paid, glad to see that's not the case.
I think it would be great if you have days of the week rather than just the date, this way you can start seeing trends on what days of the week people are more active. And maybe eventually you can just list the most active times as part of each graph. ie: Mondays between 6 and 7 pm, etc.
Thank you for the feedback, this is the first time I have made a website with such contrasting colors. Usually when I go with a "dark mode" I make sure not to go fully black or fully white because of the reason you mentioned. With that said, I don't have a problem reading the text with this color scheme. However, you are not the first person to mention this so far. I have made the update, hopefully that's easier on the eyes.
I see your point, but I think rather than it being misleading, you're just interpreting it differently. The way I see it since the recipient is receiving a text - that's using the SMS protocol even if it is through a gateway. The result doesn't change.
As to the second point, yes - I did mean free for the sender. I assumed that people were aware that the recipient can still be charged. I mean by the same logic, you might as well add the recipient's phone bill (if they don't pay per SMS message individually) and even the cost of their phone if you want to be picky. I don't think anything is inherently free. We just have different interpretations.
At the end of the day, I just thought the idea was cool, so I wanted to share it hoping someone might find it useful.
Not the most scientific approach, but you could send a message to every provider using the same number. If you get a "message not received" bounce back, then that's a good indication of which carriers are not the correct carrier.
I wasn't aware you could block email-based messages. I did a quick online search, but didn't find any T-mobile documentation for this. Do you when're I can learn more about it?
I mentioned this website in the post. It has a list of providers for different countries (Brazil included). I don't know how up-to-date they are, but it might be a good starting point. You can also always try contacting the carriers directly. https://email2sms.info/
This is a good point. With that said, one does not necessarily need to know the provider, it just makes the process more direct. An alternative approach is to send a message to every provider using the same number. The invalid addresses will likely bounce back, but the correct match will go through.
I would not purchase any of the options suggested to me by your site. With that said, It's also possible I am not your target demographic.