--- title: "Flair (Belgium) features PERIOD.: on the luteal phase and cycle apps" description: "Belgian magazine Flair spoke with our founder Lisa Volkers about PERIOD. the luteal phase, and why a privacy-first cycle app was needed." url: https://myperiod.app/en/blog/flair-belgie-period-luteale-fase lang: en date: 2025-12-04 publisher: PERIOD. B.V., Amsterdam --- [Back to blog](https://myperiod.app/blog) [Your cycle](https://myperiod.app/blog/categorie/cyclus) ยท 3 min read # Flair (Belgium) features PERIOD.: on the luteal phase and cycle apps [Lees dit artikel in het Nederlands](https://myperiod.app/blog/flair-belgie-period-luteale-fase) PERIOD. team ยท December 4, 2025 Nice news from Belgium: **Flair**, one of Flanders' best-known women's magazines, interviewed our founder **Lisa Volkers** about PERIOD. the luteal phase, and what's wrong with today's generation of cycle apps. ๐Ÿ‘‰ [Read the full interview on flair.be](https://www.flair.be/nl/talks/interviews/lisa-volkers-cyclus-app-period-luteale-fase/) (in Dutch) ## Why this interview? Flair zooms in on something many women run into but rarely talk about openly: the **luteal phase**, the stretch between ovulation and your period, when hormones swing, energy shifts, and mood, sleep and skin all move with them. Not "PMS whining", just biology. In the interview, Lisa explains how PERIOD. came out of frustration: existing apps either felt like billboards or like data factories. What was missing was an honest, Dutch-language cycle tracker that takes your body seriously, no pink, no ads, no quietly selling your intimate data. ## The luteal phase, quickly The luteal phase lasts roughly 12 to 14 days and starts after ovulation. Progesterone takes the lead. Many women notice: - A small energy dip and more need for rest - Mood that swings, sometimes more irritable or emotional - Changes in sleep, appetite and libido - More sensitive skin and breasts This isn't drama. It's your cycle doing its job. PERIOD. helps you not only *predict* this phase but *understand* it, with daily context that moves along with where you are in your cycle. ## Why Flair (and Belgium) matters to us PERIOD. was built in the Netherlands, but the conversations we have, about privacy, about the luteal phase, about how technology can help women instead of milking them, don't stop at the Dutch border. [Flair](https://www.flair.be) picking this up means a lot: it's a magazine that has been listening to what women actually care about for decades. ## Read the interview The full piece, with all quotes and the luteal-phase explainer, lives on Flair itself: ๐Ÿ‘‰ [Lisa Volkers on PERIOD. and the luteal phase, Flair](https://www.flair.be/nl/talks/interviews/lisa-volkers-cyclus-app-period-luteale-fase/) Want to try PERIOD. yourself? [Download from the App Store](https://apps.apple.com/us/app/period-cycle-period-tracker/id6757947793) or [on Google Play](https://play.google.com/store/apps/details?id=app.myperiod.android). Free. Ad-free. Your data stays yours. Want to understand your cycle better? ## Keep reading [Best app for period and ovulation tracking (2026)Tracking your period and ovulation in one app: what an app can and cannot know, which measurements really help, and how Flo, Clue, Natural Cycles and PERIOD. approach it.Read more](https://myperiod.app/blog/best-app-period-and-ovulation-tracking)[Trying to conceive: when do you switch from a cycle app to a pregnancy app?Short answer: preferably never. The moment you switch is exactly when your cycle data is worth the most. What you lose, what you need, and how it fits in one app.Read more](https://myperiod.app/en/blog/van-cyclus-app-naar-zwangerschapsapp-wanneer-overstappen)[Cycle app on the pill: is tracking still worth it when you use contraception?Short answer: yes, but for a different reason than you think. On the pill you do not predict ovulation, but you do track complaints, bleeding and what happens when you stop.Read more](https://myperiod.app/en/blog/cyclus-app-met-de-pil-heeft-het-zin)