Have you tried to use Tradingview?
I just recently checked that you can also set an alert/alarm for volume too, like if the volume cross at particular number.
Tradingview Appstore:
hereDisadvantage of tradingview is you can't set or create unlimited alerts if your account is not premium, so you will pay for premium subscription.
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgflip.com%2F4soggu.jpg&t=663&c=kaQ-yhUfIqJmfg)
And also, have you tried too the
TabTrader, they have an IOS app too. Since I tried this app long time ago on android, you can also set an alarm or alert on prices, but I don't think you can also do it on volume.