Comparison

Period Tracker vs Under FM

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Period Tracker

Features
Read full description

Period Tracker: My Cycles helps you understand your menstrual cycle and keep important records through four stages: Cycle Tracking, Trying to Conceive, Pregnancy, and Postpartum. Choose the stage that fits you now and see a clear daily view of your current phase, upcoming dates, and recent records. Core health records and predictions are stored locally on your device, with no account or cloud sync required. TRACK YOUR PERIOD AND CYCLE - Log period dates, flow, spotting, symptoms, mood, sleep, energy, temperature, and personal notes. - View month and year calendars that clearly separate recorded periods from predicted period, follicular, fertile, ovulation, and luteal days. - Edit period dates without overwriting your recorded history. - See prediction confidence when your cycle is irregular or there is not enough history yet. TRYING TO CONCEIVE - Follow your estimated fertile window and ovulation timing. - Record basal body temperature, ovulation test results, cervical mucus, and other fertility observations. - Enable local reminders for fertile-window and ovulation estimates. PREGNANCY - Follow your pregnancy week and estimated due date. - Record symptoms, weight, fetal movement, appointments, and personal notes. - Receive weekly educational guidance and optional reminders. POSTPARTUM - Follow postpartum recovery days and gradually understand your returning cycle. - Record recovery, mood, sleep, breastfeeding, lochia, symptoms, and personal notes. - Keep postpartum recovery and period records clearly separated. DAILY GUIDANCE AND INSIGHTS - Get a daily Do, Move, and Eat care plan based on your current stage, cycle phase, preferences, and recent records. - Explore educational guides for cycle care, fertility, pregnancy, and postpartum recovery. - Review local trends and summaries for your current cycle, the past 90 days, or the past 12 months. - Set reminders for periods, fertility, daily logging, pregnancy, and postpartum care. PREMIUM ACCESS Some features require an in-app purchase or an auto-renewable subscription. Available options and current prices are shown in the app before purchase. Payment is charged to your Apple Account upon confirmation. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current billing period. You can manage or cancel subscriptions in your Apple Account settings. PRIVACY FIRST Your profile, health entries, predictions, saved guides, and preferences are stored locally on your device. The app does not require an account and does not use cloud sync or Apple Health. You can clear locally stored data from Settings. Purchase processing and app analytics may be handled by Apple and the service providers disclosed in the Privacy Policy. HEALTH DISCLAIMER Period Tracker: My Cycles is a wellness and personal tracking app. It is not a medical device and does not diagnose, treat, cure, or prevent any condition. Period, ovulation, fertile-window, pregnancy, and due-date predictions are estimates and should not be used as contraception or as a substitute for professional medical advice. Consult your doctor before making medical decisions and seek qualified care for concerning or urgent symptoms. Privacy Policy: https://picksai.vip/fertility/privacy-policy.html Terms of Use: https://picksai.vip/fertility/terms-of-service.html

About

Under FM

Enhance your listening experience by layering background music or beats under podcasts and audiobooks. Adjust volume and tempo to create the perfect ambiance for workouts, chores, or focused work.

Highlights
  • Background beats under podcasts/audiobooks
  • Standalone music playback
  • Adjustable tempo and volume
  • Lock Screen controls
  • Favorites and recent tracks
  • No account required
Features
Read full description

Under FM lets you listen to music and a podcast at the same time. It plays background beats under podcasts and audiobooks, or on their own. Add background music to podcasts while running, walking, cycling, lifting, cleaning, working, or getting through anything that feels better with a beat. Your podcast or audiobook keeps your mind engaged while the music adds energy and rhythm. Start any podcast or audiobook, open Under FM, and choose a beat. Lower the beat volume until it sits beneath the voices, then adjust the tempo to match your pace. Use Under FM for podcast background music, audiobook background music, podcast beats, or simply playing music and spoken audio at the same time. The spoken audio stays clear. The beat stays underneath it. You keep listening without giving up the energy of music. Choose from beats for easy movement, steady sessions, and higher-energy workouts. Save the beats you like, revisit recently played tracks, and control playback from your Lock Screen. Features: • Background beats that play under podcasts and audiobooks • Standalone beats when you want to listen without spoken audio • Adjustable tempo and BPM • Independent beat volume control • Lock Screen playback controls • Favorites and recently played beats • No account or sign-in required • No ads • Free beats, with more available to unlock Use Under FM for: • Background music for podcasts • Music under podcasts • Podcast beats for running and workouts • Audiobook background music • Music and podcasts at the same time • Music and audiobooks at the same time • Running, walking, cycling, lifting, cardio, chores, and focused listening Start your podcast, open Under FM, choose a beat, and keep moving. Privacy Policy: https://www.maurs.com/underfm/privacy Terms & Conditions: https://www.maurs.com/underfm/terms

Screenshots

Period Tracker4 screens
Under FM4 screens

Verdict

The call

The clearest difference is in-app purchases: Period Tracker at none against Under FM's 2. On price, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Under FM sells 2 in-app purchases, starting at $9.99 per year. Period Tracker asks for nothing beyond the download.

UpkeepUpdate frequency

Period Tracker ships an update every 5 days, Under FM every 3 days. Both last shipped on October 31, 2026.

Scorecard1 real difference · 9 level
Period Tracker versus Under FM: the parameters behind the verdict, then further details
ParameterPeriod TrackerUnder FM
PriceFreeFree
Rating—5.0 (7 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—7 — better
Update frequencyEvery 5 daysEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad — betteriPhone
Requires iOS17.6 — better18.6
Further details — not scored
Size70 MB87 MB
Age rating4+4+
DeveloperInvoice Maker Inc.EnterMaurs

In-app purchases

None

Period Tracker

No in-app purchases

2 purchases

Under FM

Subscriptions1
  • Under FM Pro Annual$9.991 Year
One-time1
  • Under FM Pro Lifetime$14.99

Questions

Is Period Tracker free?
Period Tracker is free to download, with no in-app purchases.
Is Under FM free?
Under FM is free to download, with in-app purchases available.
Do Period Tracker or Under FM have ads?
Neither Period Tracker nor Under FM shows ads.
Which is updated more often, Period Tracker or Under FM?
Period Tracker ships an update every 5 days, and Under FM every 3 days. Most recently, Period Tracker was updated on October 31, 2026 and Under FM on October 31, 2026.

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