Reduction in Yield Comparison

Does anyone have a link to a good reduction in yield calculator? I've finally convinced the adviser here allow us to use it for replacement business suitability reports.
At my previous company I used O&M which calculates it for you but I don't have that facility anymore.
Comments
FE Analytics has one.
The FE Analytics one is very good. @benjaminfabi is the master at this and if anyone shared a spreadsheet on here it was him.
Paraplanner. F1, Apple, Nutella, ice cream. No trite motivational quotes. Turning a bit northern.
Thanks everyone!
I'm again in the process of convincing the adviser to sign up to FE Analytics (sigh) so for the meantime will need to do manual calculations. I'll have a look around the forums to see what I can find
I have adopted my aggregated charges disclosure to include a RIY calculator for the 'effect of charges' section.
I have cross-referenced it with FE Analytics, so I am also a supporter of using FE Analytics - it's a free module if you have a license.
Hi Andy
What have you been using up to now? I'm not aware of a free online RIY calculator, but it's not too difficult to work it out yourself from a projection.
If I shared anything it was a MiFID RIY calculator, which is a bit different, although the maths is the same. @Gustavo_Fring it will be in the EPIC MiFID thread, somewhere!
FE Analytics is good and as a rider to the main system, which I'd say is a must have for a paraplanner.
Only recently joined this company so on my first switch case! I may just try to make my own RIY calculator or adapt your MIFID one.
I think FE Analytics will be a must have, I'll try to justify the costs