Perimo vs Fember
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Perimo
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Perimo is a calm, private space to understand your perimenopause — built for real life, not another chore. TRACK YOUR CYCLE One tap for period start, spotting, and flow. See your cycle lengths shift over time — with patterns worth mentioning to your clinician, in plain numbers. HRT & MEDICATION DIARY Log doses, patch schedules, and adherence. Dose changes are tracked so you can see what happened next — all of it lands in your doctor report. GLP-1 MEDICINE LOG Using a GLP-1 medicine? Record the dose and the injection or tablet day your prescriber set, then log each dose, side effects and your weight in kg, lb or stone. A weekly card shows your next scheduled dose, how many weeks you have been on your current dose and what you noted this week. Works with GLP-1 medicines such as tirzepatide (Mounjaro®, Zepbound®) and semaglutide (Wegovy®, Ozempic®). Perimo only records what you were prescribed and never calculates or recommends doses. Perimo is not affiliated with Eli Lilly or Novo Nordisk; medicine names are trademarks of their owners. LOG YOUR DAY IN 30 SECONDS Hot flashes, sleep, mood, energy, and symptoms like night sweats, brain fog, or anxiety. Quick counters and sliders make daily logging effortless — even offline. SEE YOUR PATTERNS Weekly trend charts and a monthly calendar turn scattered symptoms into a clear picture. Streaks gently encourage consistency, because more data means better answers. AI INSIGHTS FROM YOUR OWN DATA Every week, Perimo analyzes your logs and surfaces connections you might miss — like how your sleep shifts on high hot-flash days. Plain language, no jargon, and always with the reminder that this is general information, not medical advice. SYMPTOM LAB — RUN YOUR OWN EXPERIMENT Wondering if magnesium, an evening walk, or skipping late caffeine actually helps you? Pick one change, keep logging, and Perimo compares your symptoms before and after — then shows the difference in your own numbers on a simple evidence card you can bring to your clinician. Not averages. Not advice. Your own data. ASK PERI — YOUR DATA, TALKING BACK Ask Peri answers questions about YOUR patterns — sleep, cycle, medications — using your own logged history, not generic content. Prefer talking? Voice logging turns 30 seconds of speaking into a completed daily log. AI features are optional, clearly labelled, and require your explicit consent; conversations are processed by OpenAI and are never used to train AI models or sold to anyone. Peri gives general information only — it does not diagnose or replace your clinician, and safety-sensitive messages are always directed to real-world help. DOCTOR-READY REPORTS Export a clean PDF summary of your last 30, 90, or 365 days and make your next appointment count. PRIVATE BY DESIGN Your data is yours. Logs are encrypted, stay on your device when offline, and can be exported or permanently deleted anytime. PREMIUM Perimo Premium unlocks Symptom Lab, weekly insights, reports and full tracking. Start with a 7-day free trial, then choose Premium Yearly ($49.99/year) or Premium Monthly ($9.99/month). Payment is charged to your Apple Account. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period; manage or cancel anytime in your App Store settings. Perimenopause can feel unpredictable. Understanding it shouldn't. — Privacy Policy: https://perimo.app/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Fember
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Fember is the private companion for perimenopause and hormone therapy — one-tap symptom logging, reminders for every kind of regimen, and a calendar that actually shows you patterns. No account. No ads. Your data never leaves your iPhone. EVERY REGIMEN, REMEMBERED Patches, gels, pills, sprays, injections, pessaries, coil — including phased and cyclical schedules and multiple medications at once. Reminders that respect your sleep and adapt when your prescription changes. ONE TAP, TIME-STAMPED A hot-flash button in the app and on your Home Screen widget. Time, intensity, and trigger captured in a second — so frequency patterns are finally visible. THE CALENDAR YOU'VE BEEN ASKING FOR Month heat views with dose-change markers. See what actually changed after the change — night sweats before and after the new patch, in one glance. WALK IN WITH PROOF One tap builds a clean PDF for your appointment: adherence, symptom trends, labs, and the questions you want to ask. PRIVATE BY ARCHITECTURE No account. No sign-in. No data sold — ever. Everything lives on your iPhone and syncs through your own iCloud. Export everything as CSV or PDF whenever you want. Fember is free to download, and full access requires a Fember Plus subscription. Every feature described above is included with the subscription, which starts with a 21-day free trial, then $6.99/month or $49.99/year. Subscriptions auto-renew until cancelled; manage or cancel anytime in Settings. Fember is a tracking tool, not a medical device, and does not provide medical advice. Privacy policy: https://bozdevsupport.github.io/fember-landing/privacy.html Terms of use (Apple standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: Fember at every 3 days against Perimo's weekly. Perimo's advantage is iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and device support 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. Perimo sells 2 in-app purchases, starting at $9.99 per month and Fember sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.
Perimo ships an update weekly, Fember every 3 days. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.
| Parameter | Perimo | Fember |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 71 MB | 2 MB |
| Age rating | 12+ | 12+ |
| Developer | Halil Hilmi | Berkay Ozcan |
In-app purchases
Perimo
- Premium Monthly7 Days trial$9.991 Month
- Premium Yearly7 Days trial$69.991 Year
Fember
- Fember Monthly14 Days trial$6.991 Month
- Fember Annual14 Days trial$49.991 Year









