Period Tracker by GP Apps vs Hydro Habit Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Period Tracker by GP Apps
Easily track your menstrual cycles, predict future periods, and monitor fertility. Log symptoms, moods, and weight with detailed charts and customizable notes. Includes advanced modes for trying to conceive and pregnancy tracking, with privacy features and data backup.
- Period cycle tracking and prediction
- Fertility and ovulation tracking
- Symptom and mood logging
- Weight and temperature tracking
- Customizable notes and symptoms
- Pregnancy mode and countdown
- Data backup and export
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Period Tracker, the easiest way to track your health! *Now supports HealthKit, 3DTouch, TouchID, portrait charts, Advanced TTC Mode (the easiest way to get pregnant by following the homepage timeline’s simple prompted instructions!), and Pregnancy Mode with articles and week-by-week images. Period Tracker is SIMPLE and CUTE. * Press a button at the start of your period every month. Period Tracker logs your dates and calculates the average of your past 3 months' menstrual cycles to predict the start date of your next period. * View your current and future period dates, ovulation and fertile days, moods, symptoms, weight, temp, and fertility notes in a simple month-view calendar. * Discreet iPhone icon simply reads "PTracker." Period Tracker is FILLED WITH FEATURES. * Take daily notes of menstrual symptoms including Spotting, Flow, Cramps, Headaches, Backaches, Bloating, Tender Breasts, and Body Aches! * Track your weight, temperature and moods (over 30+ moods to choose from!) * Add custom symptoms and moods * Charts! Beautiful, comprehensive and handy. Charts show weight, temp, symptoms, period length, cycle length, and more. * Backup/Restore your data with your online backup and restore account. (works across platforms) * Homescreen shows your predicted ovulation, eight day "fertile window,” and your cycle day. Great for trying to conceive. * Pregnancy mode activates countdown to baby's due date and week-by-week articles. * Protect your privacy with TOUCH ID or with a passcode option that is fast and easy. * Export your period dates and notes to email for doctor's visits. Period Tracker is loved by millions of users. MommaRed - "I really like this application. It is easy to use, easy to track and plan for upcoming events. The recent updates have made it even better. One of my favorite iPhone apps." Blanczz226 - "This is one of my favorite apps. I use it every month and it's extremely accurate. Worth the $ for sure" GeekSugar.com - "Period Tracker is the ultimate menstrual mentor. You enter in your info, and it tracks your cycles, letting you keep notes about your activities and well being, all the while using twee 'lil hearts .and flowers to denote important days." Celstemc - "One of my first apps and I am completely in love with it! Won't use another one like it!! Cute and easy to use!" Subscription Details By subscribing to the Period Tracker Patron program you receive additional features. Subscription purchased through the app will be charged to your iTunes account. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period at the cost of $9.99. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription. Terms of service: https://gpapps.com/support/eula/ Privacy policy: https://gpapps.com/support/privacy-policy/ Disclaimer: Period Tracker period and fertility forecasts may not be accurate and should not be used to prevent unwanted pregnancy. To forecast ovulation Period Tracker calculates 14 days before the projected start date of one's next period. Forecast accuracy depends on a number of factors including how regular one's cycle length is, when one actually ovulates during the cycle, and how many periods have been logged in the app. Anxiety, stress, diet, nutrition, exercise, environment, medications, age and other factors can also affect one's cycle from month to month. Please email comments and suggestions to supportgpa@gmail.com.
Hydro Habit Pro
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Hydro Habit — build your day, one sip at a time. Stay on top of your hydration with a simple tracker made for daily habits. Log drinks in seconds, set a personal goal, and see your progress at a glance. TRACK EVERY SIP • Log water and other drinks (tea, coffee, juice, milk, and more) • Quick-add buttons or custom amounts in litres • See today’s intake and full history • Undo your last log if you made a mistake DAILY GOALS & PROGRESS • Set a daily hydration target that fits you • Watch your progress ring fill as you drink • Get gentle prompts when you have not set a goal yet SMART REMINDERS • Turn reminders on or off anytime • Choose how often you want to be nudged • Add custom reminder times (e.g. after a workout) • Sound and vibration options in Settings STREAKS, BADGES & FREEZE • Build a streak by hitting your goal each day • Unlock Bronze, Silver, Gold, and Platinum badges as your streak grows • Use Freeze to protect your streak on days you miss your goal (optional in-app purchase) STATS & INSIGHTS • Daily, weekly, and monthly analytics • See averages, streak length, and how often you hit your goal • Spot trends and stay consistent over time LEADERBOARD • Compare your rank with others worldwide • Filter by overall intake, today, or streak • Stay motivated with friendly competition YOUR ACCOUNT • Secure sign-up and sign-in • Edit your profile, change password, and pick your language • Dark mode for comfortable viewing day or night • Delete your account and data from the app when you choose PRIVACY & SUPPORT Hydro Habit is designed with transparency in mind. Read the Privacy Policy and Terms in the app, or get help via Help & Support. Important: Hydro Habit is for habit-building and general wellness only. It does not provide medical advice. Talk to a healthcare professional about how much fluid is right for you.
Screenshots
Verdict
The clearest difference is ads: Hydro Habit Pro at none against Period Tracker by GP Apps's shown. Hydro Habit Pro also leads on update cadence (every 2 weeks vs every 2 months). On price, in-app purchases, device support and iOS requirement 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
Both are free to download. Period Tracker by GP Apps sells 1 in-app purchase, starting at $9.99 per year and Hydro Habit Pro sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Period Tracker by GP Apps ships an update every 2 months, Hydro Habit Pro every 2 weeks. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.
| Parameter | Period Tracker by GP Apps | Hydro Habit Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (79K ratings) — better | — |
| Positive reviews | 91.4% of reviews | — |
| Number of ratings | 79K — better | — |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 64 MB | 55 MB |
| Age rating | 12+ | 4+ |
| Developer | GP Apps | Niels Lekkerkerk |
Bugs and requests
Period Tracker by GP Apps
Reported bugs
3 issues- Period start/end dates not saving correctly
- Ovulation predictions often inaccurate
- Crashes or freezes when logging data
Requested features
4 requests- Add option to track irregular cycles
- Improve data backup and sync across devices
- Provide more customization options for layout and themes
- Integrate with other health tracking apps
Hydro Habit Pro
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Period Tracker by GP Apps
- Annual Member14 Days trial$9.991 Year
Hydro Habit Pro
- 5 Freezes$0.99
Questions
Is Period Tracker by GP Apps free?
Is Hydro Habit Pro free?
Do Period Tracker by GP Apps or Hydro Habit Pro have ads?
Which is updated more often, Period Tracker by GP Apps or Hydro Habit Pro?
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