Disclaimer: I've received a demo account for free for a review
This is a service for agencies who handle client accounts.
If you're one of these, I believe it's indispensable and very fairly priced.
I also believe that if you are not handling client accounts, you don't need Igblade.pro.
You would be better off with many of the other instagram statistics services available, e.g. the many phpanalyzer installations.
The weak side:
The actual analytics - there's only the developments of followers, followings, posts and engagement rates over time, both in a tabular data format and in a very basic graph. There's no pictures of most liked posts, most shared, etc., no hashtags used, mentions etc. etc. Very basic indeed, though the author assured me that they're always extending the system and are working on more analytics now.
The interesting feature:
You can set alarms and get informed, when an account passes certain thresholds, e.g. passing 100k followers or so. Nice if you run many accounts and prepare them for selling
The really powerful side:
The white label features. This is amazing. You can set up reports with your branding that get automatically produced and mailed at certain intervals. If you work for clients, I'm sure you will smell the flowers now. But there's more: You can even create your own branded subdomain for the service (even add your own Google Analytics ID!), or even host it on your own domain) and create accounts for your clients. That's why I said indispensable above.
Final positive remark:
Great tutorials, easy to understand. I haven't seen such good documentation for a SAAS in many months.