Why would u buy amibroker? It is an age old software. Is if no use really.. Unless you're into coding algo strategies that can anyways be done on excel. Don't waste ur money buddy.
Amibroker may not be very useful for you. But I have used it for developing indicators and trading systems and I have yet to find another platform that is anywhere as fast as amibroker for making simple indicators and systems.
Here are some things that take virtually no time in amibroker, but take a lot of time on most platforms:
a. Change parameters and see their effect on the chart. In ami, you can drag through parameter slider and see the chart update in realtime.
b. Change timeframes on a chart - On most platforms, this can take some time, in ami it is done instantly.
c. Change symbols on a chart - Most platforms will do a refresh and take some time to load data when you change symbols on a chart. With ami, it is again instant. I have not seen many trading platforms that are as fast as ami when it comes to changing chart symbols.
d. Make changes to code and see the effect instantly. No need to compile indicator code, reload chart, etc. This is super efficient for a programmer who is writing new indicators. I have sometimes used ami only for this feature when developing a new indicator. I would then port that indicator to other platforms after I have fine tuned it on ami.
For auto trading, ami is perhaps not very good and I would not use it for any kind of auto trading.
Ninja is a free platform with its own strengths, but the above are where ami clearly scores over ninja. I actually use both realtime as each platform has its own strengths. But even Ninja is not really free. Its real power comes into the picture when you use it for executions and for that you need to pay a monthly lease unless your broker gives it to you for free.
Ami is also one of the cheapest platforms out there. You can get a lifetime license for $339 or $279. Even excel will cost you more. Some ninja indicators cost that much. Most platforms will cost > $50 per month to license or $500 and higher to buy a lifetime license. This price also comes with 1 or 2 years of free upgrades.
If you are a trader, this is a small cost. You will most likely pay more in a year for a proper data feed.
-- no1lives4ever