たびに・につけ: the difference
たびにN3
Meaning
Each time, Every time, Whenever
Past papers
Tested 9 times in past papers
Example
君は会う度に大人になってゆく。
Every time I see you, I see how much you have matured.
につけN2
Meaning
Whenever, Every time something happens
Past papers
Tested 2 times in past papers
Example
元カノが写っている写真を見るにつけ、胸が痛くなる。
Every time I see a picture with my ex-girlfriend, my heart aches.
How to tell them apart
「たびに」: can be followed by any concrete action: 「スーパーへ行くたびに、お菓子を買う」 (Every time I go to the supermarket, I buy sweets).
「につけ」: cannot be followed by an action like buying sweets; only by feelings that arise on their own.