Too many ads
Response from developer
Hello, this is Once. :) Thank you so much for using and loving Once, and we sincerely apologize for the inconvenience you experienced with the app. We aimed to maintain an ad-free app for a long time, but we inevitably had to introduce ads to continue offering a free service to our users. We truly apologize once again for any frustration this has caused. Warm regards, Team Once
Lost years of data
Good app.. but
The only thing I find annoying about this app is the ads when needing to add to the calendar.
It would be nice to not have to watch a video every single time I need to mark the start of my cycle.
Other than that this app has been great when tracking my cycle.
Response from developer
Hello, this is ONCE :) First of all, we’d like to thank you for your support of ONCE, and we apologize for any inconvenience this may cause while using the app. We’ve long strived to provide an ad-free app, but in order to continue offering our service to users for free, we’ve had no choice but to include ads. We apologize once again for any inconvenience this may cause.
리뷰 한 번도 해본적 없는데
Response from developer
안녕하세요. 원스 입니다. :) 원스를 사랑해주셔서 정말 감사드립니다! 응원의 댓글과 별점은 저희에게 큰 힘이 된답니다! 감사합니다.







