Rillday vs BubuTracker
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Rillday
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Keep your observations in one place and build a tracking routine at your own pace. Rillday supports cycle tracking, trying to conceive and pregnancy tracking. A subscription is required to access tracking features. You can preview your starter plan before choosing an offer. MY RILLDAY PLAN Choose your goal and priority to discover a seven-step starter plan: record how you feel, organize your observations, explore useful tools and review your notes. After subscribing, open the same saved plan, start your first action and keep your progress. Work through it at your own pace, then continue your everyday tracking. YOUR CYCLE, DAY BY DAY Record periods in your calendar and log symptoms, mood and energy. View your history and available statistics as you add observations. TRYING TO CONCEIVE Keep fertility observations and test results in your journal. Bring your dates and notes together to help prepare questions for an appointment. YOUR PREGNANCY Follow pregnancy milestones, keep a journal and organize appointments. Keep your notes and questions close at hand. A REPORT TO KEEP OR SHARE Once you have recorded at least two completed cycles, create a PDF report with the available information about your cycles and symptoms. You decide whether to share it. Fertility test results are not included in this report. RESOURCES FOR YOUR ROUTINE Explore articles and breathing exercises to support your everyday well-being routine. SUBSCRIPTION Available offers, durations and prices are displayed before purchase. Any introductory trial depends on the available offer and your eligibility; its terms are shown in the app. Subscriptions renew automatically unless cancelled. Manage or cancel your subscription in your Apple account settings. Restore Purchases is available in the app. Rillday is a tracking and information tool. It does not provide a diagnosis, serve as contraception or guarantee fertility outcomes. It does not replace advice from a healthcare professional. Privacy policy: https://selara-nicoavril1231-devs-projects.vercel.app/privacy.html Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
BubuTracker
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Period Tracker is a calm, privacy-first way to track your menstrual cycle. Everything stays on your device โ no account, no cloud, no sharing, ever. PRIVATE BY DESIGN Your data never leaves your phone. There's no sign-up, no server, and no tracking. Everything you log is stored locally, and deleting the app deletes all of it. Period Tracker contains no analytics, no ads, and no third-party trackers. ONE TAP A DAY Log your flow, mood, and symptoms in seconds. Periods are figured out for you from the days you log โ no need to mark start and end dates manually. The app learns your pattern over time. SMART, GENTLE PREDICTIONS See your predicted next period, fertile window, and ovulation day, plus a confidence range that adjusts as you log more. A cycle ring on the Today screen shows where you are in your cycle at a glance. These are educational estimates, not medical advice. STAY IN THE LOOP Optional local reminders โ scheduled entirely on your device โ can alert you before your period, on period day, at the start of your fertile window, and on ovulation day. You choose the time and how many days ahead. EVERYTHING IN ONE PLACE โข Today โ your cycle ring and a timeline of what's coming up โข Calendar โ a clean month view with your logged days and predictions โข History โ a reverse-chronological journal of your days, filterable by flow, mood, and symptoms โข Insights โ averages, trends, and a "count as period" toggle to fine-tune predictions NO ACCOUNTS, NO CLOUD, NO WORRY Period Tracker works completely offline. There is nothing to sign up for and nothing that can be leaked or sold, because nothing ever leaves your device. Note: Period Tracker provides educational estimates only and is not a medical device or a substitute for professional medical advice. Always consult a healthcare professional for health decisions. Requires iOS 17 or later. Works on iPhone and iPad.
Screenshots
Verdict
The clearest difference is in-app purchases: BubuTracker at none against Rillday's 2. BubuTracker also leads on update cadence (every 2 weeks vs every 2 months). Rillday's advantage is iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Rillday sells 2 in-app purchases, starting at $3.99 per month. BubuTracker asks for nothing beyond the download.
Rillday ships an update every 2 months, BubuTracker every 2 weeks. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.
| Parameter | Rillday | BubuTracker |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 2 weeks โ better |
| Ads | No | No |
| In-app purchases | Yes | No โ better |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.1 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 65 MB | 5 MB |
| Age rating | 12+ | 12+ |
| Developer | Lead Gen Connect LLC | Marsel Nasr |
In-app purchases
Rillday
- Rillday Pro โ Monthly14 Days trial$3.991 Month
- Rillday Pro - Yearly14 Days trial$24.991 Year
BubuTracker
No in-app purchases









