Steadied vs PMDDly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Steadied
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Steadied is a cycle, hormone, and symptom tracker for PCOS, endometriosis, adenomyosis, PMDD, PMS, perimenopause, postpartum recovery, hypothalamic amenorrhoea, and menstrual migraine. It isn't a fertility tracker or contraceptive. Patterns take cycles to surface. Steadied makes that wait worth it: insights built over months can be the kind a clinician will engage with. PRIVACY BY CONSTRUCTION • No accounts, no sign-up, no tracking • No servers — your data is not sent to us • No third-party analytics, no advertising IDs • iCloud sync uses your private database (end-to-end encrypted by Apple) • Panic Delete clears covered cycle/report data: this device, your iCloud, and the suite slice BUILT FOR CHRONIC-ILLNESS AUDIENCES Pick PCOS, endometriosis, adenomyosis, PMDD, PMS, perimenopause, postpartum, hypothalamic amenorrhoea, menstrual migraine, or "tracking only" during onboarding. Steadied tailors the symptom set, the language, and the insights to your conditions. Change them any time. Inclusive language preference (default neutral; non-binary and trans-masc options). PERIOD, SYMPTOM AND PAIN LOGGING Five flow levels, birth-control checks, treatments, a curated 40-symptom catalogue filtered to your conditions, custom symptoms, 1–10 severity sliders, optional notes, and a Pain map for body-location pins. Edit any past day from the calendar. METHOD TRACKING Track birth-control method, start date, daily reminders for daily methods, and cycle-suppression context. Steadied is still not contraceptive advice. CALENDAR WITH IRREGULARITY-AWARE WINDOWS Logged periods show as filled circles, your next-period window as a dashed outline. When your cycles vary by more than ~5 days, Steadied widens the window to a range — no false confidence on a single date. Common with PCOS, perimenopause, or postpartum. INSIGHTS Free: • Cycle rhythm — average length, range, honest prediction windows • Phase patterns — symptom severity, energy, and sleep averages per phase Steadied+: • Before-period changes — baseline vs pre-period 3-day average, worst-day offset, cycle count • Cycle rhythm drill-downs — trend, irregularity signals, year timeline • Symptom Patterns — top symptoms by phase and date heatmap • Pain Locations — cycle-linked body-map pain summaries • Body Signals — sleep, resting HR, HRV, and wrist temperature by phase • Doctor Reports, scheduled reports, CSV export, and curated symptom renaming REPORTS FOR YOUR CLINICIAN Single-file PDF: cycle history, bleeding pattern, phase analysis, premenstrual pattern, length trend, symptom log summary, treatment context, and pain locations when logged. Scheduled Doctor Reports are included in Steadied+. APPLE WATCH APP & WIDGETS Standalone Watch app with phase, cycle day, flow picker, symptom quick logging, flare/context chips, and daily birth-control or treatment check-ins when configured. Five iOS widget families plus four watch complication families. APPLE HEALTH Read-only menstrual flow and spotting import, plus wearable readings when available: resting heart rate, sleep, HRV, and wrist temperature. Steadied never writes back to Apple Health by design. BACKUP, RESTORE & EXPORT Free JSON backup and restore for cycle, symptom, pain-map, treatment, report, and wearable data with Merge or Replace modes. Restore requires iCloud Sync to be fully off for the current launch. Automatic backups can write to iCloud Drive. Steadied+ adds CSV export. PRICING Steadied+ is a one-time £29.99 purchase. Family Sharing eligible. No subscription. No "trial expired" messaging. SAFETY Steadied is not a medical device. Period-date estimates are based on your own data and are not contraceptive. Do not use Steadied for fertility planning, conception, or contraception. If you are concerned about your symptoms, consult a clinician — do not wait for the app to surface a pattern. Terms: https://www.cocoacorn.com/steadied/terms Privacy: https://www.cocoacorn.com/steadied/privacy
PMDDly
This app helps individuals track and understand Premenstrual Dysphoric Disorder (PMDD). It offers tools for symptom logging, crisis support, and communication with loved ones, all while prioritizing user privacy. It aims to provide a supportive companion for managing PMDD.
- Cycle and symptom tracking
- Weather-based cycle phase visualization
- Personalized crisis plans
- Journaling for future self
- Partner sharing with privacy controls
- Anonymous community support
- Grounding and reality check tools
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PMDDly — The Companion for Life With PMDD PMDD (Premenstrual Dysphoric Disorder) isn't "bad PMS." It's a real, diagnosable condition that can turn the two weeks before your period into a fight for your life. PMDDly was built by and for people who live this — to help you track it, understand it, prepare for it, and get through it. Track what actually matters Log your cycle, symptoms, mood, and flow in seconds. PMDDly shows you exactly where you are in your cycle using a simple weather-based system — sunny, clearing skies, clouds rolling in, full storm — so you can see the pattern instead of feeling ambushed by it every month. Crisis tools for when it's too much Build a personal Crisis Plan on a good day — your calming words to yourself, your comfort toolkit, your reasons to stay — so it's there waiting for you on the hardest ones. Quick access to grounding tools and reality checks when everything feels urgent and nothing is clear. Write to the version of you who needs it Leave messages, photos, and voice notes for your future self — timed to arrive during your next hard phase, from the version of you who already knows what helps. Notifications that actually know your pattern Get gentle reminders to log your symptoms, alerts when your phase shifts, and a nudge when someone replies to your community post or likes what you shared. But PMDDly's notifications go further: write a message to your future self during a hard moment, and it can resurface automatically next cycle, at the same phase — "here's what helped you last time." Reflect on how a cycle went, and PMDDly remembers, so next time you're not starting from zero. All of this happens without exposing anything private. Your lock screen never shows symptom details, mood scores, or anything you wouldn't want a stranger glancing at your phone to see. Bring your partner in, on your terms Link a partner with a simple invite code, and they get their own view into your cycle — built to help them actually understand what you're going through, without you having to explain it in the moment. By default, they always see your current cycle phase and period dates, so they know at a glance whether today calls for extra patience or space. If you want to share more, you can turn on full symptom and mood history sharing — completely optional, off by default, and reversible any time from Settings. When it's hard and you need them, one tap sends a support request straight to their phone — a simple, private "I need you" notification. It never includes your symptoms, mood, or any health details in the notification itself; all of that stays inside your secure account, visible to them only through the app, and only to the extent you've chosen to share it. You're always in control: adjust what's shared, or disconnect the link entirely, at any time — no explanation needed, and nothing carries over once you do. A community that actually gets it Share, vent, and read from people living the same storm — anonymously if you want, with your own name if you don't. Post, comment, and connect with people who don't need PMDD explained to them. Nourish tab Track histamine and food triggers, plan meals, and build a food diary designed around how your body actually responds across your cycle — not a generic diet tracker. Your data stays yours No ads. No analytics trackers. No selling your data — ever. Your health data belongs to you: export it, delete it, or close your account entirely, any time, from Settings. PMDDly isn't medical advice and doesn't replace your doctor — it's the tool we wished existed while we were living this. Track it. Prepare for it. Survive it. And know you're not the only one. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is iOS requirement: PMDDly at 15.1 against Steadied's 18.0. On price, update cadence, ads and in-app purchases 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. Steadied sells 1 one-off in-app purchase and PMDDly sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.
Steadied ships an update fortnightly, PMDDly every 11 days. Both last shipped on October 24, 2026.
| Parameter | Steadied | PMDDly |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (5 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 5 — better |
| Update frequency | Fortnightly | Every 11 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 18.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 71 MB | 54 MB |
| Age rating | 12+ | 17+ |
| Developer | Geoff Davis | Karolina Slezinska |
In-app purchases
Steadied
- Steadied+$29.99
PMDDly
- PMDDly Plus7 Days trial$7.991 Month
- PMDDly Plus$59.991 Year









