HerWeigh vs Sophie
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HerWeigh
This application helps women track their weight by overlaying data with their menstrual cycle. Gain hormonal context for weight fluctuations and understand your body's natural patterns. Syncs with Apple Health and offers journaling for additional insights.
- Cycle-aware weight tracking
- Hormonal insights for weight fluctuations
- Syncs with Apple Health
- Privacy-focused data storage
- Journaling for mood, diet, and exercise
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HerWeigh is a cycle-aware weight tracking app designed specifically for women. Instead of treating every daily scale number the same, HerWeigh overlays your weigh-ins directly with your menstrual cycle phases, giving you hormonal context for what you see on the scale. WHY HERWEIGH? Real body tissue (fat or muscle) changes slowly—typically at a maximum rate of roughly 0.1–0.3 lbs per day. When your scale jumps or drops by 2–5 lbs across 3–4 days, it is almost entirely hormonal fluid and glycogen shifts triggered by progesterone, estrogen, and aldosterone. HerWeigh helps you separate temporary water swings from real body composition progress so you never panic, restrict, or stress over the scale again. KEY FEATURES: • Cycle-Aware Tracking: View your weigh-ins mapped alongside your Menstrual, Follicular, Ovulation, and Luteal phases. • Water Retention & Water Dump Insights: Automatically detect rapid fluid swings (like late-luteal retention or period water drops) so you understand daily spikes. • Personalized Hormonal Baselines: View your typical weight range projected from previous cycles to know what is normal for your unique body. • Cycle-to-Cycle Trends: Filter out monthly water noise with cycle comparison charts to track true long-term fat loss or muscle gains. • Apple HealthKit 2-Way Sync: Automatically import past weigh-ins and sync cycle logs with Apple Health. • Daily Journal & Notes: Add notes to your weight logs to track symptoms, workouts, fasting, mood, and meals. • 100% Private (Ad-Free with Pro): Your health and cycle data stays on your device and private iCloud. No trackers, ad-free with Pro, and never sold. Stop guessing. Stop panicking over normal fluctuations. Start understanding your body’s natural rhythm. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.ujiapps.com/herweigh/privacy-policy
Sophie
This app uses your body temperature data from smart wearables to accurately track your ovulation and menstrual cycle. It provides personalized insights, learns your unique rhythm, and offers an AI companion for health questions. It also integrates astrological data and allows partner sharing.
- Temperature-verified ovulation tracking
- Personalized cycle rhythm measurement
- AI companion for health questions
- Smart wearable integration (Oura, Fitbit, etc.)
- Manual data entry option
- Astrology and lunar phase integration
- Partner sharing options
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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 update cadence: Sophie at every 2 days against HerWeigh's weekly. Sophie also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.6). On price, rating, review sentiment and ratings volume 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. HerWeigh sells 3 in-app purchases, starting at $0.99 per month and Sophie sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.9 for HerWeigh against 4.8 for Sophie. Both are backed by a comparable volume of ratings — 7 and 6 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
HerWeigh ships an update weekly, Sophie every 2 days. Both last shipped on October 24, 2026.
| Parameter | HerWeigh | Sophie |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (7 ratings) — better | 4.8 (6 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 7 — better | 6 |
| Update frequency | Weekly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Freemium |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 22 MB | 149 MB |
| Age rating | 4+ | 12+ |
| Developer | Le Huang | PredictHer LLC |
Customer experience
HerWeigh
Sophie
In-app purchases
HerWeigh
- Monthly3 Days trial$0.991 Month
- Yearly3 Days trial$9.991 Year
- Lifetime Access$14.99
Sophie
- Premium - Monthly7 Days trial$9.991 Month
- Premium - Annual7 Days trial$59.991 Year
- 30 Sophie Voice Minutes$4.99









