Gold Stuff
+ Cheap for a paid MQL5 Market indicator: 30 USD on MT4 and 50 USD on MT5, both one-off
+ A free demo of each build runs in the MT4 and MT5 strategy tester, so the behaviour can be checked before paying
+ Almost nothing to configure, which removes the temptation to tune settings until the history looks good
+ Long public feedback trail on the marketplace: roughly 600 reviews and 1,200 comments across the two builds
- The calculation is closed, so the no-redraw claim cannot be settled by reading it and has to be tested on your own charts
- No period, sensitivity or threshold inputs at all, so it cannot be adapted to an instrument it was not tuned for
- Both builds last shipped a version in March 2023, so the listing is stable rather than actively developed
Waddah Attar Explosion
+ Free to download, with the original version published in the public MQL5 Code Base since 2007
+ Calculation is public, so repaint behaviour can be settled by inspecting the formula rather than trusting a vendor claim
+ Combines two well-understood tools, MACD and Bollinger Bands, into one visual momentum-and-volatility read
+ Fully adjustable sensitivity, dead zone, and trend power inputs for tuning signal frequency
- Being MACD-derived, it inherits the lag of any moving-average-based calculation and will not call a move before it starts
- The dead zone is an absolute pip threshold, so a setting tuned on one instrument behaves completely differently on another
- Widely copied and re-hosted across download sites, so the build you download may differ from the original published code