5 Best Period Tracker Apps for Teens & Tweens (2026, Honest Review)

Best Period Tracker Apps for Teens & Tweens (2026)

Written by Sofia, Bloomy teamLast updated October 2026

Short answer: Bloomy is the best period tracker for tweens and younger teens because it's made only for them and predicts the first period. For older teens, Clue (science-led) and Flo (all-in-one) are strong, Stardust is the fun astrology pick, and Apple Cycle Tracking is the no-download option on iPhone.

Quick verdict

Under 13 or waiting for a first period → Bloomy. 13–17 with regular cycles → Clue or Flo. Loves astrology → Stardust. Wants nothing extra to download → Apple Cycle Tracking.

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How we compared

We looked at what actually matters for a teen in the US: the minimum age, whether it helps before the first period, whether you need an account, where data is stored, how adult the content is, price, and devices. Every competitor fact comes from the company's own pages, checked October 2026. We make Bloomy, so we've listed its weaknesses too.

Feature	Bloomy	Flo	Clue	Stardust	Apple Cycle
Built for teens	Yes	All ages 13+	All ages 13+	Older teens/adults	All iPhone users
Min age (US)	~9 by design	13	13; parent OK <16	Check app	Apple ID rules
First period prediction	Yes	No	No	No	No
Account	No	Yes / Anonymous Mode	Check app	Check app	Apple ID
Free version	Yes	Yes	Yes	Yes	Built in
Android	No	Yes	Yes	Yes	No
Before + after first period	Yes	No	No	No	No

One app for the whole journey

Other apps start once periods have started. Bloomy starts earlier and never needs replacing — it's the only period app she'll ever need.

1
Before your first period
Bloomy estimates your first-period window from your age and body signs, explains every change in simple words, and helps you pack a school kit so you feel ready.
2
The day it starts
Log it in one tap. Bloomy switches itself into a full period tracker — same app, same data, nothing new to download or set up.
3
Every cycle after
Period dates, cycle length, next-period prediction, ovulation window, symptoms, cramps, moods and reminders — a complete period and cycle tracker for life.

The 5 best period trackers for teens

Bloomy — best for tweens & first periods

Best for: ages 9–15, before and after the first period

✓ First period predictor from age + signs
✓ Becomes a full period & cycle tracker after — one app for life
✓ No account, no ads, data on phone

– iPhone only for now
– Some extras behind an optional upgrade

Clue — best science-led tracker for older teens

Best for: 16+ (or 13–15 with a parent)

✓ Research-based and calm
✓ iPhone & Android
✓ GDPR-level privacy (Germany)

– Not allowed under 13 in the US
– Parent permission under 16
– Paid features 18+ only

Flo — best all-in-one app

Best for: older teens who want lots of content

✓ Huge feature set and articles
✓ Anonymous Mode option
✓ iPhone & Android

– 13+ only
– Much adult/fertility content
– Community chat may not suit younger teens

Stardust — best for astrology fans

Best for: older teens who love horoscopes

✓ Fun, playful design
✓ Solid free version
✓ iPhone & Android

– Premium is mostly horoscope/tarot content
– No first period features

Apple Cycle Tracking — best built-in option

Best for: iPhone users who want nothing extra

✓ Already on iPhone in the Health app
✓ No extra app to install

– Basic for teens
– No first-period guidance

What parents should check before downloading

Age rules: under 13 in the US, Flo and Clue aren't an option.
Account and data: does it need email, and where is data stored?
Community features: public or anonymous chats aren't ideal for younger kids.
Content: is it about puberty, or about fertility and sex?

Switching from another app?

✓ Set up in about 2 minutes — just enter your last period dates
✓ No account, no email, no age gate or parent sign-up step
✓ Full period, cycle, ovulation, symptom and mood tracking from day one

Switch to Bloomy

Track it all in Bloomy — free

Free, private, made for teens. Predicts your first period, tracks every cycle after.

Download on the App Store

Frequently asked questions

What is the best period tracker app for teens?+

For teens and tweens, Bloomy is our pick because it's built only for that age, predicts the first period and needs no account. Clue and Flo are strong choices for older teens (13+, and Clue asks parent permission under 16).

What is the best period tracker for a 12 year old?+

A 12-year-old in the US is under Flo's and Clue's minimum age of 13. Bloomy (designed from about age 9) or Apple's built-in Cycle Tracking with a parent's help are the realistic options.

What is the best period tracker for tweens?+

Bloomy, because it works before the first period — which is where most tweens are — and explains puberty signs in simple language.

Is there a period tracker that doesn't need an account?+

Yes. Bloomy works without an account, and Apple's Cycle Tracking lives in the Health app on iPhone. Flo also offers Anonymous Mode.

Are period tracking apps safe for teenagers?+

They can be. Look for clear age rules, no ads aimed at kids, control over your data, and no public community chats for younger users. Read each app's privacy policy with a parent.

Is there a free period tracker for teens?+

Bloomy, Flo, Clue and Stardust all have free versions; Apple Cycle Tracking is built into iPhone at no cost.