I guess experiences vary as i have used the TomTom app for over a year now with no missed cameras so far.
I can assure you having used both side by side the TT does miss cameras. It has 90% of them but is so far behind with new cameras it’s not true, especially motorway cameras. The TT system is also very slow at deleting cameras especially roadworks that have finished. I’m not anti-TT, just the opposite, I really rate their live traffic data compared to others, just not their camera database.