HerWeigh vs Ferrum
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
Ferrum
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Strength training built around your cycle. Because the best athletes don't ignore their biology — they train with it. —— TRAIN WITH YOUR CYCLE, NOT DESPITE IT Your hormones are the most underused performance tool in women's fitness. Ferrum tracks your Menstrual, Follicular, Ovulatory, and Luteal phases and uses them to drive every recommendation — from load adjustments to rest guidance to when to attempt a PR. —— GUIDED WORKOUTS THAT ACTUALLY ADAPT Follow a step-by-step guided session or log freely in manual mode. Navigate exercises like a playlist — skip ahead, go back, track each set individually with different weights and reps. Your workout saves as you go, so nothing is ever lost. —— KNOW WHEN TO PUSH. KNOW WHEN TO RECOVER. Ferrum's progressive overload engine monitors your performance history and your cycle to flag peak strength windows automatically. When your body is primed for a personal best, Ferrum tells you. When it needs recovery, Ferrum tells you that too. —— BUILT FOR WOMEN WHO LIFT Not a wellness app. Not a step counter. Ferrum is a serious training tool — weekly splits, PR tracking, progress photos tied to your cycle phase, and coaching that understands your biology. Your body has a rhythm. Train like it.
Screenshots
Verdict
The clearest difference is in-app purchases: Ferrum at none against HerWeigh's 3. HerWeigh's advantage is update cadence (weekly vs every 2 months). 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. HerWeigh sells 3 in-app purchases, starting at $0.99 per month. Ferrum asks for nothing beyond the download.
HerWeigh ships an update weekly, Ferrum every 2 months. Both last shipped on October 24, 2026.
| Parameter | HerWeigh | Ferrum |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (7 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Weekly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.6 | 16.6 — better |
| Further details — not scored | ||
| Size | 22 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Le Huang | Samer Zumot |
In-app purchases
HerWeigh
- Monthly3 Days trial$0.991 Month
- Yearly3 Days trial$9.991 Year
- Lifetime Access$14.99
Ferrum
No in-app purchases









