How to Use RepTrack's Cycle Tracking for Better Results

Most fitness apps pretend your body works the same way every day of the month. It does not. Estrogen peaks in the late follicular phase and increases muscle protein synthesis by 10-15%. Progesterone rises in the luteal phase, shifts fuel metabolism toward fat oxidation, and increases resting metabolic rate by 100-300 calories per day. These are not subtle shifts. They affect your training capacity, recovery speed, energy levels, and nutritional needs across a roughly 28-day cycle.

RepTrack built an entire adaptive system around this. Cycle tracking in RepTrack does not just predict your next period — it adjusts your nutrition targets, surfaces phase-specific coaching, and learns your individual symptom patterns over time. Here is how to set it up and get the most out of every feature.

Getting Started

There are two ways to access cycle tracking:

Route 1 (Profile tab):

1. Open the Profile tab
2. Find Cycle Tracking
3. Tap See all

Route 2 (Dashboard): The Dashboard has a cycle top card with a Log action that opens the cycle detail and logging screen directly.

First-Time Setup

If cycle tracking is not yet active, the cycle detail screen shows an onboarding state with a "Set Up Cycle Tracking" button. Tap it to open the setup sheet.

The setup asks for four things:

Last period start date. A graphical date picker lets you scroll to the first day of your most recent period. The picker is bounded to recent history, so you are choosing from the last few months — not scrolling back to 2019.

Cycle length. A stepper control, adjustable between 21 and 60 days. The population average is 28, but normal cycles range widely. If yours is consistently 26 days, set it to 26. If it varies between 25 and 32, enter your best estimate of the average. You can adjust this later.

Period length. Another stepper, range 2 to 8 days. How many days your period typically lasts. This tells RepTrack when the menstrual phase ends and the follicular phase begins.

Irregular / delayed cycle mode. A toggle with explanatory text. If your cycles are unpredictable — varying by more than 7 days month to month due to stress, travel, PCOS, or other factors — enable this. In irregular mode, RepTrack relies more on your daily symptom check-ins and less on calendar math to estimate your current phase.

Tap Save and you are done. RepTrack immediately calculates your current cycle day, identifies your phase, and begins generating phase-specific coaching. The entire setup takes under 30 seconds.

Your Cycle Dashboard

Once tracking is active, the cycle detail screen transforms into a comprehensive dashboard. Here is what you see, top to bottom:

Cycle Ring Hero

A circular visualization at the top of the screen showing your current cycle day (e.g., "Day 14"), phase name (e.g., "Follicular"), and total cycle length. The ring gives you an instant visual of where you are in the cycle — think of it as a clock face where 12 o'clock is day 1 and you are currently at whatever position your cycle day represents.

Cycle Timeline Strip

Below the ring, a horizontal strip lays out your current cycle day by day. Phase transitions are visually marked. This strip makes it easy to see how far you are into your current phase and when the next transition is expected.

Today's Coaching Card

A context-specific guidance card that changes daily based on your current phase. During the follicular phase, it might suggest pushing training volume or attempting PRs while estrogen is supporting recovery. In the late luteal, it might recommend prioritizing steady-state work and sleep. These messages are tied to the physiological realities of each phase — not generic motivational text. For the science behind phase-based training adjustments, see the menstrual cycle training guide.

Symptom Check-In Card

The daily check-in entry point (more on this in the next section).

Last 7 Days Weekly Strip

A tappable strip showing your logged data from the past week. Tap any day to see what you reported — useful for spotting patterns and comparing how you felt earlier in the week versus now.

Cycle Insights Section

Aggregated patterns and observations based on your logged data across multiple cycles.

Calendar Section

A monthly calendar view of your cycle with a Full View option for expanded viewing. Logged days, phase transitions, and predicted dates are all visible here.

Phase Forecast Card

Shows what is coming next: the Up Next phase and your Next Period prediction. This is where the predictive value of consistent tracking pays off — after 2-3 cycles of data, these predictions become genuinely useful for planning training blocks, travel, or events.

Nutrition This Phase Card

Displays any active nutrition adjustments for your current phase. During the luteal phase, for example, you might see a +120 calorie and +10% carb adjustment reflected here. This card connects your cycle phase directly to your daily nutrition targets. For the full breakdown of why these adjustments matter, see the luteal phase nutrition guide.

Cycle Details Settings Card

Quick access to edit your cycle parameters — cycle length, period length, and other settings — without leaving the dashboard.

Tracking Control

At the bottom: Disable Tracking and Delete All Cycle Data options. Disable keeps your data but pauses the feature. Delete is permanent. Both are clearly separated and require confirmation.

Daily Symptom Check-Ins

The symptom logging system has two levels, designed for different levels of time and detail.

Level 1: The Quick Check-In Card

Right on the main cycle screen, the check-in card asks for two things:

• Energy — a 1-5 emoji scale. How energized do you feel right now?
• Mood — emoji options for your current emotional state

Below these, a button reads "Log cramps, sleep, flow & notes" to open the full logging sheet. If you only have 5 seconds, just tap your energy and mood emojis and move on. That alone gives RepTrack valuable data.

Level 2: The Full Log Symptoms Sheet

Tap the button on the quick check-in card and a sheet slides up with the complete symptom log:

• Energy level — the same scale from the quick check-in
• Cramps — presence and intensity
• Bloating — presence and intensity
• Sleep Quality — a star rating
• Mood — expanded options
• Flow Intensity — including a "No period" option for days outside your menstrual phase
• Notes — optional free text for anything else worth recording

Tap Save and the log is recorded for that day.

Why Consistency Matters More Than Completeness

The cycle tracking system gets smarter with data. After 2-3 cycles of consistent logging, RepTrack can predict your energy patterns, correlate your symptoms with specific cycle phases, and adjust its coaching proactively.

For example, if your logs consistently show energy dropping to 2/5 on cycle days 25-28, RepTrack learns this and proactively suggests lower-intensity training on those days in future cycles — before you report feeling drained. But this only works with consistent input. Logging 5 fields every other day is less useful than logging 2 fields every day. Frequency beats completeness.

How RepTrack Adapts to Your Cycle

This is what separates RepTrack from a period prediction app. The cycle tracking system does not just tell you where you are — it adjusts what the app recommends.

Nutrition Adjustments

The Nutrition This Phase card on your cycle dashboard shows active adjustments. During the luteal phase, your basal metabolic rate increases by approximately 5-10% due to progesterone's thermogenic effect. RepTrack responds by:

• Adding approximately +120 calories to your daily target
• Increasing carb intake by roughly +10% to compensate for impaired glycogen storage efficiency

These adjustments prevent unnecessary restriction during a phase when your body genuinely needs more fuel. The extra calories come primarily from carbohydrates, matching the increased metabolic demand and helping stabilize blood sugar — which can reduce the mood and energy fluctuations common in the late luteal phase.

During the follicular and ovulatory phases, your standard targets apply. This is when your body handles intense training and normal nutrition targets well.

Phase-Specific Coaching

Today's coaching card adapts its messaging to your current phase:

• Follicular: Rising estrogen supports recovery. Push volume, attempt PRs, take advantage of the strength window.
• Ovulatory: Peak estrogen. Typically your strongest days.
• Early Luteal: Transition phase. Maintain intensity but monitor fatigue.
• Late Luteal: Energy and recovery capacity decline. Deload suggestions, emphasis on sleep and steady-state work.
• Menstrual: Rest or light movement. No pressure.

Over multiple cycles, these messages calibrate to YOUR patterns, not just textbook averages. If your data shows you feel strong through day 24 when most people are fatiguing by day 22, RepTrack adjusts accordingly.

Apple Health Sync

RepTrack can sync cycle data with Apple Health. You will find the connection option in the Cycle Details settings card on the dashboard.

What syncs: Period start and end dates, cycle length data, and related symptoms can flow between RepTrack and Apple Health. If you already track your cycle in another app that writes to Apple Health, RepTrack can pull in that existing data so you do not start from zero.

Reconnecting: If the sync disconnects (permissions change, app reinstall, etc.), the settings card will show a status like "Previously synced 1 day ago" so you know it is not current. Re-enable the connection from the same settings card.

What it means for data: Apple Health sync uses Apple's encrypted Health framework. Data is shared only with the specific apps you authorize. RepTrack does not sync your cycle data to any other server or service.

Managing Your Data

Editing Cycle Parameters

Your cycle length, period length, and other settings are accessible from the Cycle Details settings card at the bottom of the dashboard. As your cycle changes — which it naturally does with age, stress, fitness level, and other factors — update these values. More accurate inputs mean more accurate phase predictions and better-calibrated coaching.

Disabling vs. Deleting

Two options live at the very bottom of the dashboard:

Disable Tracking pauses the cycle tracking feature but keeps all your logged data intact. Your symptom history, cycle records, and learned patterns are preserved. Re-enable any time and everything picks up where it left off.

Delete All Cycle Data is permanent. It removes your cycle profile, all logged symptoms, all cycle history, and all learned patterns. This cannot be undone. RepTrack asks for confirmation before executing.

Privacy

All cycle data stays on your device. It is stored locally in SwiftData, not uploaded to any server, and not included in analytics. If you enable Apple Health sync, data flows only through Apple's encrypted framework. If you delete the app, locally stored cycle data is deleted with it.

Cycle data is health data. RepTrack treats it that way.

Building the Habit

The most effective way to use cycle tracking is to make it a 15-second daily habit. Here is a minimal routine:

1. Open RepTrack in the morning
2. Tap your energy emoji on the quick check-in card
3. Tap your mood emoji
4. Done

That is it. Two taps, five seconds, and RepTrack has enough data to start learning your patterns. On days when you have a bit more time or something notable to report — bad cramps, great sleep, unusual fatigue — tap through to the full Log Symptoms sheet and fill in more detail.

After 2-3 cycles of this, the predictive features start earning their keep. Phase forecasts become accurate. Coaching messages become personalized. Nutrition adjustments align with your actual energy patterns rather than population averages. The system gets better because you gave it data to learn from.

For a deeper dive into how training should change across your cycle, see the full menstrual cycle training guide. For specific nutrition strategies during the luteal phase, see the luteal phase nutrition guide. And for understanding how to interpret the symptoms you are logging, check out the symptom tracking guide.