The TeenCycle journal

Stories, gently told.

Short pieces on cycles, privacy, and the quiet design choices behind TeenCycle. Written by the people who make the app.

The archive.

Five green pears arranged in a row on a pale linen cloth.
Reviews

Best period tracker for teens in 2026.

A parent’s honest review of seven popular period apps: Flo, Clue, Stardust, Luna, Spot On, Apple Health, TeenCycle.

May 26, 202611 min
Warm sunlight filtering through layered terracotta and cream sheer curtains.
Privacy

Privacy-first period apps in 2026.

Three meanings of "private," what to check in a privacy policy, and which apps actually meet the bar.

May 22, 20269 min
A single ripe pear sitting on a woven mat beside softly draped linen.
For parents

Period tracker apps that don’t ask sex questions.

The four that don’t, and how to spot the ones built for adults at signup.

May 19, 20266 min
A young person gazes quietly out of an airplane window at warm sunset light.
Privacy

Why we built TeenCycle offline-first.

What that decision cost us, what it gave back, and why we’d make it again.

May 14, 20266 min
A grouping of soft-toned stoneware ceramic vessels in muted clay and cream tones.
Design notes

What we left out (and why).

Every feature that didn't make it had a reason. A list of the small "no"s that shape the app.

Apr 28, 20264 min
A fountain pen rests on the open ruled page of a paper notebook in soft natural light.
Cycles 101

A field guide to your first year of tracking.

What to expect, what's normal, and how to read your own data without spiralling.

Apr 14, 20267 min
A worn wooden bench sits by a quiet window in a rustic cabin, sunlight pouring through the panes.
Privacy

What "offline" actually means.

The word gets thrown around a lot. Here's exactly what leaves your phone with TeenCycle — nothing.

Apr 02, 20265 min
A mother shares a basket of fresh muffins with her daughter at a warm-lit kitchen table.
For parents

A short letter to parents.

What you can and can't see, and how to talk about cycles without sounding like an HR form.

Mar 19, 20263 min
A repeating grid of lunar phases progressing from new moon through full and back.
Cycles 101

The myth of the 28-day cycle.

Most people aren't 28 days. Why textbooks lied, and what's actually normal.

Mar 06, 20266 min
A cozy armchair beside a sunlit window framed by potted plants and quiet morning light.
Design notes

Designing for calm.

Why the app makes no sound, sends no push, and uses only three screens — by design.

Feb 22, 20265 min