Period Tracker vs Nightpenny
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Period Tracker
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CycleBond is free for women and includes private cycle tracking, period days, fertile days, and personal insights. Partner features for men require a one-time in-app purchase, CycleBond PRO. Track your cycle with clarity, privacy, and ease. See your period, fertile days, ovulation, and cycle phases in one simple view. Get gentle daily insights, plan ahead with more confidence, and stay in sync with your body. And when you want, you can share your cycle with your partner ā so he can better understand what phase you are in, how you may be feeling, and how to respond with more care, patience, and empathy. Privacy and security come first Your cycle is personal ā and it should stay that way. CycleBond is designed with privacy in mind: ⢠No unnecessary personal data ⢠No account required for core use ⢠No name, no email address, no password needed ⢠Your cycle settings stay simple and private ⢠A safe and thoughtful space for your most personal information We believe cycle tracking should feel calm, secure, and respectful ā never intrusive. Designed for women CycleBond helps you understand your rhythm without making things complicated. Use the app to: ⢠Track your cycle length ⢠Set your period days ⢠See fertile days and ovulation ⢠Choose your period start date ⢠View your current cycle phase ⢠See weekly and monthly cycle previews ⢠Get gentle daily insights based on your phase ⢠Plan your month with more clarity Whether you want to understand your mood, energy, timing, or body better, CycleBond helps you feel more connected to yourself. Built for couples too CycleBond is more than a cycle tracker ā it can also help create better understanding in a relationship. With partner sharing, your partner can follow your cycle in a respectful and supportive way. This can help him: ⢠understand your current phase better ⢠know when you may need more comfort or more space ⢠respond with more empathy ⢠better understand emotional and physical changes ⢠avoid unnecessary misunderstandings ⢠feel more connected to what you are experiencing Instead of guessing, he gets a clearer view of your rhythm ā so support feels more natural, and connection feels easier. Helpful daily guidance CycleBond offers more than dates on a calendar. Depending on the phase, the app can help surface gentle insights about: ⢠how you may feel ⢠what may support you most ⢠what to be mindful of ⢠how energy and emotions may shift through the cycle For partners, the app can also provide supportive guidance such as: ⢠how she may feel ⢠what helps most ⢠what to avoid This makes the experience more practical, more human, and more useful in everyday life. A calm and beautiful experience CycleBond is designed to feel soft, modern, and easy to use: ⢠clean cycle ring ⢠weekly and monthly calendar views ⢠elegant daily cards ⢠simple setup ⢠beautiful, feminine design ⢠support for multiple languages Everything is built to make cycle tracking feel less overwhelming and more natural. Why CycleBond? Because understanding the cycle can change more than just planning. It can help women feel more in tune with their body. It can help men become more supportive and aware. And it can help couples communicate with more empathy and less confusion. CycleBond helps turn cycle tracking into self-understanding ā and shared understanding.
Nightpenny
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Your sleep is a running balance. Good nights deposit, short nights withdraw. Pennie, a warm copper piggy bank, shows where you stand and walks you through a quiet weekly ritual to catch back up. No hustle. No optimization. No shame. Just a quiet weekly ritual and a number that tells you where you stand. FROM A NIGHT'S SLEEP TO A SUNDAY HABIT ⢠PASSIVE TRACKING Pennie reads sleep from Apple Health. You sleep, we count. No extra hardware, no fiddly logging. ⢠A RUNNING 14-NIGHT BALANCE A signature 270° gauge shows your balance: hours owed, hours banked. Updated every morning. ⢠THE SUNDAY RITUAL Three quiet minutes every Sunday. A statement of the week, one line from Pennie, and a repayment plan you actually want to follow. ⢠REPAYMENT PLAN, ON YOUR PACE Pick Gentle (+30 min/night), Steady (+1 hour), or Ambitious (+1.5 hours). Bedtime events sync to Apple Calendar in one tap. ⢠FORECAST WITHOUT THE FEAR See the next 30 nights at your current pace, plus a typical-dip heatmap of where your energy historically wobbles. Patterns, never predictions. ⢠APPLE WATCH + WIDGETS Six widget families: small, medium, large, lock-screen circle, rectangle, inline. A wrist app and complications that keep your balance one flick away. ⢠WEEKLY SHARE CARD Tap the gauge on Sunday to export a five-second vertical clip of your week. Strava-grade restraint. Share Pennie without sharing numbers you'd rather keep. WHAT WE'RE NOT Not a medical device. Nightpenny does not diagnose, treat, or prevent any condition. Not a pressure cooker. No streaks to break. No red alerts. Debt is a number, not a character flaw. Not a data broker. Sleep stays on your phone. No server, no ads, no data sold. Analytics is opt-in and never carries numeric sleep values. THE SCIENCE, QUIETLY Balance is computed using a 14-night rolling sum (Van Dongen et al. 2003), with surplus above 1h discounted at 40% (recovery is slower than accumulation, per the Sleep Foundation), and clamped at ā8 hours. Full methodology lives inside the app, in Settings ā About. PRICING Free ⢠Current balance + last 7 nights ⢠Pennie's daily greeting Premium ⢠Full 14-night ledger ⢠The Sunday Ritual + Calendar sync ⢠Repayment Plan + 30-night Forecast ⢠All six widgets, share card, Apple Watch app ⢠Rich notifications and the full Pennie speech library $6.99 / month (billed today, no trial) $59.99 / year (14-day free trial, save 30%) Built by Foxtaming, an indie studio of one. Questions, weather reports, or sleep stories: contact@nightpenny.com. Terms of Use (EULA): https://nightpenny.com/terms Ā· Privacy: https://nightpenny.com/privacy
Screenshots
Verdict
The clearest difference is update cadence: Period Tracker at every 2 days against Nightpenny's every 4 weeks. Nightpenny's advantage is iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Period Tracker sells 1 one-off in-app purchase and Nightpenny sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.
Period Tracker ships an update every 2 days, Nightpenny every 4 weeks. Both last shipped on October 31, 2026.
| Parameter | Period Tracker | Nightpenny |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 days ā better | Every 4 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone, Apple Watch ā better |
| Requires iOS | 26.0 | 17.0 ā better |
| Further details ā not scored | ||
| Size | 45 MB | 59 MB |
| Age rating | 17+ | 4+ |
| Developer | Paul Rauch | Thomas Sobstyl |
In-app purchases
Period Tracker
- CycleBond Connect$3.99
Nightpenny
- Monthly Premium$3.991 Month
- Annual Premium14 Days trial$34.991 Year









