Fine as an add-on if you're already at an adventure park for bungee or giant swing, but as a standalone activity it's overpriced for the actual ride time (under 2 minutes) — bundle it with another activity rather than booking solo.
Built by the same Jumpin Heights operation that established India's first fixed bungee platform, the Flying Fox zipline at Mohanchatti opened as part of the same adventure-sports complex developed with New Zealand-trained safety consultants from around 2010 onward. At roughly 1km long and 120m above the Ganga valley, it was billed as Asia's longest fixed-platform zipline, riders reaching speeds up to 140-160 km/h, and it helped establish the Rishikesh-Tapovan corridor as a hub for extreme adventure tourism alongside rafting and bungee jumping.