Recurring investment
An automatic buy the app makes on your schedule.
A recurring investment is a standing instruction to your broker: buy $X of this fund every week, two weeks or month, automatically.
Why it works
Automation turns dollar-cost averaging from a plan into a habit you cannot forget or talk yourself out of. The money moves before you have a chance to second-guess the market.
Setting one up
Most brokers let you choose the investment, the amount, the frequency and the funding account. Check whether the broker charges a fee per purchase, since small fees add up fast on small buys.