Red Diary vs SimpleRX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Red Diary
This app analyzes your symptoms, mood, energy, sleep, and activity to provide personalized insights and daily guidance tailored to your cycle phases. It offers a body weather forecast and smart recommendations for exercise, nutrition, and self-care.
- Personalized cycle insights
- Smart daily guidance
- Body weather forecast
- Cycle tracking modes (fertility, pregnancy, birth control)
- Symptom and mood logging
- HealthKit integration
- Apple Watch companion app
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A period and cycle tracker that keeps your data on your phone. No account. No cloud. No tracking. No ads. Most period apps send your most private information to their servers. Red Diary doesn't have servers. Free to track your cycle, log symptoms, and get predictions — no trial, no card, no expiry. Premium unlocks the fertility, pregnancy, and insight modes. PRIVATE BY DESIGN Your cycle history, symptoms, and intimate details never leave your device. There is no account to create, no server to breach, and no company reading your data. Export anytime for a doctor's visit or your own backup — it's your information. BUILT FOR REAL CYCLES, NOT AVERAGE ONES Most trackers assume a textbook 28 days and get confused when yours doesn't cooperate. Red Diary reads each cycle on its own terms, so irregular, long, short, and changing cycles are understood instead of flagged as wrong. BODY WEATHER Your own forecast, built from your own logs. Red Diary looks for patterns across your history and tells you what today has tended to look like for you — sunny, clear, mixed, overcast, or stormy. If it doesn't have enough history to say something true, it tells you that instead of guessing. WHAT SHOULD I DO TODAY? Every time you open the app, you get an answer. Phase-aware guidance for movement, food, and rest that shifts as your body does. FOUR MODES Track My Cycle — phase-by-phase analytics and predictions Trying to Conceive — fertile window, peak day, cycle health, and support through the two-week wait Avoid Pregnancy — honest fertility status, including the days it can't be certain about I'm Pregnant — 40 weeks of content, kick counter, appointments, and trimester insights Switch whenever life changes. The app changes with you. A CALENDAR THAT ACTUALLY WORKS Start and end your period with one tap, right from the calendar. Backdate cycles you missed. Log intercourse. See period, predicted, fertile, and logged days at a glance — with moon phases, if you like tracking alongside them. WHY YOU FEEL LIKE THIS Log symptoms, mood, sleep, temperature, and more. Red Diary finds what repeats across your cycles and explains what's behind it, instead of just recording it. SHARE HOW YOU FEEL Send a phase-aware note to a partner, a friend, or your birth control buddy through iMessage, WhatsApp, or anywhere else. No accounts, on either end. ON YOUR WRIST Cycle day, phase, and progress ring on your watch face in phase-matched colors. Start or end your period, log your mood, and get guidance without reaching for your phone. APPLE HEALTH Steps, calories, exercise, and sleep flow in automatically. See how your energy and activity really shift across your cycle — no extra logging. BIRTH CONTROL REMINDERS Pill, patch, ring, shot, IUD, or implant. On-time reminders, streak tracking, and insights that adapt to your method. WHAT'S PREMIUM Trying to Conceive, Avoid Pregnancy, and Pregnancy modes, Body Weather, full cycle insights, fertility analytics, and mood sharing. Cycle tracking, logging, predictions, calendar, and birth control reminders are free and stay free. Privacy Policy: https://dormeusapps.com/reddiary-privacy.html Terms of Use: https://dormeusapps.com/reddiary-terms.html
SimpleRX
This app helps users manage their medications with automatic reminders and refill alerts. It also offers features for caregivers to monitor adherence and provides crucial medical information for emergencies.
- Medication tracking and reminders
- Barcode scanning for prescriptions
- Refill alerts
- Caregiver monitoring
- Drug interaction checker
- Medical ID card
- Printable EMS Quick Reference Card
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SimpleRX is a medication tracker built by a paramedic who saw firsthand what happens when patients can't remember their medications. It's designed to be simple enough for anyone to use, and detailed enough to matter when it counts. For patients: Add your prescriptions in seconds by typing the name or scanning the barcode on your pill bottle. SimpleRX looks up what the medication is for and sets your daily reminders automatically. When you're running low, it reminds you to refill before you run out. For caregivers: Stay connected to the people you care for. Get notified when they take a dose, miss one, or need a refill. View their medications, adherence history, and emergency information — all from your own phone. Safety features built in: SimpleRX checks for drug interactions every time you add a new medication and explains them in plain English. It tells you what side effects to expect when starting something new, and alerts opioid patients about Narcan and where to get it free. Emergency ready: Build a complete Medical ID card with your conditions, allergies, blood type, DNR status, and emergency contacts. Generate a printable EMS Quick Reference Card that first responders can read at a glance, designed by a paramedic for patients. What makes SimpleRX different: Large buttons and clear text designed for elderly users Speaks your medication name out loud when it's time to take it No complicated setup, works in minutes Available in English and Spanish Caregiver access is always free One simple price, no subscription ever
Screenshots
Verdict
The clearest difference is monetization model: SimpleRX at free against Red Diary's freemium. Red Diary's advantage is ratings volume (9 vs 2) and iOS requirement (17.6 vs 26.5). On price, rating, update cadence and ads 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. Red Diary sells 2 in-app purchases, starting at $0.99 per month and SimpleRX sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for Red Diary against 5.0 for SimpleRX. Both are backed by a comparable volume of ratings — 9 and 2 respectively.
Red Diary ships an update every 3 days, SimpleRX every 5 days. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.
| Parameter | Red Diary | SimpleRX |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (9 ratings) | 5.0 (2 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 9 — better | 2 |
| Update frequency | Every 3 days — better | Every 5 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free — better |
| Devices | iPhone, Apple Watch | iPhone, iPad, Apple Watch — better |
| Requires iOS | 17.6 — better | 26.5 |
| Further details — not scored | ||
| Size | 8 MB | 13 MB |
| Age rating | 12+ | 4+ |
| Developer | RUBINS DORMEUS | Luke Heyne |
Customer experience
Red Diary
SimpleRX
In-app purchases
Red Diary
- Premium Monthly7 Days trial$0.991 Month
- Premium Annual$4.991 Year
SimpleRX
- Unlock SimpleRX$2.99









