Monyx vs NailSafe
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Monyx
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You don't bite your nails because you lack willpower. You bite them because your hand moves on its own. 92% of nail biters say they never see the gesture coming. That's the whole problem, and it's why deciding to stop has never been enough. Monyx works on the gesture itself: noticing it, logging it, replacing it. THE DAILY PACT Every morning, sign your pact by holding your finger down for three seconds. Every evening, answer “Pact kept” right from the notification, and your day is confirmed. Your calendar fills up, kept days link into a streak, and 19 badges mark your milestones. THE METHOD 21 days of Habit Reversal Training, the behavioral method with the most evidence behind it. One lesson a day, one minute each, one exercise to try before evening. Each day unlocks once you've done the one before. Week 1, see the gesture. Week 2, replace it. Week 3, lock it in. TWO TAPS ON THE BACK OF YOUR IPHONE The urge rises. Two taps on the back of your phone and it's logged, without opening the app, without taking your eyes off what you were doing. That's the whole point: a log that costs nothing is a log you actually keep. After a few days, the Progress tab shows what you couldn't see. Your urges cluster around two or three situations, not everywhere. You stop fighting all day and start defending a few precise moments. YOUR NAILS, IN PHOTOS One photo a week, always framed the same way, with an alignment overlay so the comparison holds. A nail grows about 0.1 mm a day. It won't show tomorrow. In two months the difference jumps out at you. WHEN THE URGE HITS Make a fist and follow a guided breath: 4-7-8, in for 4 seconds, hold for 7, out for 8, or 5 minutes of coherent breathing. Almost every urge passes in under two minutes, whether you bite or not. Every wave you ride out teaches your brain that it ends without going through your mouth. AND IF YOU SLIP One bad evening costs a few days on one finger. The spiral that follows costs months on ten. Monyx logs the slip as a data point, not a verdict, and asks what set it off. The people who make it aren't the ones who never slip. They're the ones who start again within 24 hours. Monyx is also for people who pick or peel the skin around their nails instead of biting. The app asks at the start and adapts your tracking. YOUR DATA STAYS ON YOUR IPHONE No account, no email, no password. Everything you log stays on your device and syncs only to your own iCloud, if you've turned it on. No analytics, no advertising, no third parties. You can erase everything from the app, for good, in two taps. Monyx is not a medical device and does not replace a healthcare professional. FREE The daily pact, your calendar and badges, the card of the day, your streak, unlimited logging, your millimeters of growth, and one photo a week. WITH PREMIUM The full 21-day program, your trigger analysis, one photo a day and the emergency Breathe button. Try the yearly plan free for 3 days, or go monthly. Cancel anytime in your iPhone settings. A question, an idea, a bug: hello@getmonyx.app, we always reply. Terms of Use: https://getmonyx.app/terms.html Privacy Policy: https://getmonyx.app/privacy.html
NailSafe
This app helps users break the habit of biting their nails or cuticles. It uses desk mode to detect gestures, SOS tools for urges, and weekly photos to track progress and hand changes.
- Desk Mode for gesture detection
- SOS tools for urge management
- Weekly photo progress tracking
- Habit Reversal Training method
- Bite-free day counter
- Relapse coach
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NailSafe is a nail-biting habit app for people who bite their nails or cuticles without noticing. Desk Mode can help you notice the gesture, SOS tools help when an urge arrives, and weekly photos let you follow changes in your hands. Your hands speak before you do. A NailSafe Pro plan is required to use the app: weekly or yearly with a 3-day free trial for eligible new subscribers, or a one-time lifetime purchase. Your first check-in comes before the offer. Nail biting can go unnoticed: your hand may move before you become aware of it. NailSafe’s Desk Mode can help you notice the gesture and pause. DESK MODE — DETECTION • Prop your iPhone on the desk, front camera on, and work. • When Desk Mode detects a hand near your mouth, a soft chime can help you interrupt the gesture. • 100% on-device. No image is ever saved or sent. SEE YOUR HANDS CHANGE • Guided weekly photo, same framing every time. • Before/after slider from Day 0, timeline and estimated growth. • Proof you can look at — and share. THE METHOD BEHIND IT • Habit Reversal Training built in: notice, replace, see it change. • 90-second SOS when the urge hits: breathing, a competing response your mouth can't reach, your reason. • Relapse coach: a slip restarts the counter, never your progress. YOUR NUMBERS • Bite-free days, check-ins, completed exercises and weekly photos. • Daily 5-second check-in, trigger chart, 16 achievements. A PLAN BUILT ON YOU • Three short questions: since when, what triggers it, at which moments. Try 30 seconds of the SOS, then save your starting point before the offer. • Optional notification reminders, including an evening nail-care reminder. HONEST, NOT INSTANT Nails don't recover overnight, and NailSafe never invents a finish line or promises a date. What you see is real: your own weekly photo, your own pace, your own proof. NailSafe is a habit-support tool. It is not medical advice and does not replace a health professional. NailSafe Pro: a weekly or yearly plan with a 3-day free trial for eligible new subscribers, or a one-time lifetime purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period. Manage in your Apple ID settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://romeoapps.app/en/nailsafe/privacy/ What you saved stays yours: your journal and photos can be read, exported and deleted without a purchase. Is it a treatment for BFRB? No. NailSafe is a habit-support tool, not a medical treatment. Where do my photos go? They stay on your iPhone as your own record. Do I need to pay? You can start during setup. Full access requires NailSafe Pro, with the price in your currency shown before you pay.
Screenshots
Verdict
The clearest difference is update cadence: NailSafe at every 2 days against Monyx's weekly. 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. Monyx sells 2 in-app purchases, starting at $4.99 per month and NailSafe sells 4 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Monyx ships an update weekly, NailSafe every 2 days. The most recent releases landed on October 31, 2026 and November 8, 2026 respectively.
| Parameter | Monyx | NailSafe |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Weekly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Subscription |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 5 MB | 18 MB |
| Age rating | 12+ | 4+ |
| Developer | LUC BRUNNARIUS | ROMEO ILARIO FLAVIO GAMBINO |
In-app purchases
Monyx
- Monyx Premium Mensuel$4.991 Month
- Monyx Premium Annuel$34.991 Year
NailSafe
- Pro Weekly3 Days trial$5.997 Days
- NailSafe Pro3 Days trial$29.991 Year
- Pro Lifetime Offer$39.99
- Pro Lifetime$49.99







