mjn vs Sophie
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
mjn
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mjn-SERAS is a earpiece with an app that assesses the risk of epilepsy seizures. mjn-SERAS is a medical device that sends a warning signal when the risk of epilepsy seizure is high (the purchase of the product requires having the earpiece). mjn-SERAS records the electrical activity of the brain in real time and stores the information on specific servers. The artificial intelligence algorithm that permanently evaluates the risk of epilepsy seizures works in real time in the MJN-SERAS application of the user's mobile phone. mjn-SERAS is a medical device from mjn-neuro. mjn-SERAS is a CE marked medical device in accordance with European Regulation 2017/745 (MDR) and Royal Decree RD. 192/2023. Contraindications: Do not use the product in case of suffering from an infection in the ear canal or in case of suffering a skin lesion in the vicinity of the product's area of influence. Clinical studies using Real World Data show an accuracy of 99%, a sensitivity of 83% and a specificity of 99%.
Sophie
This app uses your body temperature data from smart wearables to accurately track your ovulation and cycle. It provides personalized insights, answers your questions with AI, and can share information with a partner. It prioritizes data privacy and honesty, informing you when data is unclear.
- Ovulation confirmation via temperature data
- Personalized luteal phase measurement
- AI companion for cycle insights
- Smart ring and watch integration
- Partner sharing options
- Data privacy focused
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Most cycle apps guess. Sophie checks. Sophie Premium starts with a 7-day free trial, then continues as a yearly or monthly subscription. Sophie reads the nightly body temperature from your smart ring or watch and looks for the shift that proves ovulation actually happened — then adjusts everything downstream to where you really are in your cycle, not where a calendar assumed you'd be. WHAT MAKES SOPHIE DIFFERENT • Ovulation you can trust — confirmed from your own temperature data, not predicted from a 28-day average. Sophie learns your personal ovulation window from your confirmed cycles and gets sharper every month. • Your rhythm, measured — most apps assume a 14-day luteal phase. Sophie measures yours, because bodies don't read textbooks. • Sophie, your AI companion — ask her anything about what your body is doing, and she answers with your own calendar and charts: your fertile window, your best days, when to take an LH test. She remembers your history, your symptoms, and what you told her last week. • Wearables welcome, not required — works with Oura, WHOOP, Apple Watch, Samsung Health, Ultrahuman, RingConn and Fitbit, and works perfectly well on cycle dates you enter yourself. • The sky, too — your natal chart, lunar phases and daily astrology, woven in beside the biology for the days you want meaning as well as data. • Bring your partner — share exactly as much as you choose, and they get real guidance on how to show up for you. BUILT ON HONESTY Sophie tells you when she doesn't know. When your data is disturbed or the temperature shift hasn't arrived yet, she says so — instead of inventing certainty you might plan your life around. YOUR DATA IS YOURS We don't sell your data and we never will. No data brokers, and no tracking you across other apps: to see which of our ads work, we count installs and purchases without your advertising ID. SOPHIE PREMIUM Everything described above is part of Sophie Premium, an auto-renewing subscription. • Start with a 7-day free trial. • Then $59.99 per year or $9.99 per month (US prices; local prices may differ). • Payment is charged to your Apple Account when the free trial ends. The subscription renews automatically unless you turn it off at least 24 hours before the end of the current period. Manage or cancel any time in your Apple Account settings. Sophie is a wellness and cycle-awareness app. It is not a contraceptive, is not a medical device, and does not diagnose or treat any condition. Terms of Use: https://www.predicther.ai/terms.html Privacy Policy: https://www.predicther.ai/privacy.html
Screenshots
Verdict
The clearest difference is in-app purchases: mjn at none against Sophie's 3. Sophie's advantage is update cadence (every 2 days vs monthly). On price, ads, device support and iOS requirement 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. Sophie sells 3 in-app purchases, starting at $9.99 per month. mjn asks for nothing beyond the download.
mjn ships an update monthly, Sophie every 2 days. The most recent releases landed on November 7, 2026 and November 9, 2026 respectively.
| Parameter | mjn | Sophie |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.8 (6 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 6 — better |
| Update frequency | Monthly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Subscription |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 103 MB | 150 MB |
| Age rating | 4+ | 12+ |
| Developer | mjn-neuro | PredictHer LLC |
In-app purchases
mjn
No in-app purchases
Sophie
- Premium - Monthly7 Days trial$9.991 Month
- Premium - Annual7 Days trial$59.991 Year
- 30 Sophie Voice Minutes$4.99









