Updated 4 October 2026

Nail biting apps, compared honestly.

Nail biting apps split into a few kinds: ones that buzz when your hand moves, ones that teach a method, ones that show your nails growing back, and ones that show you when and why it happens. Here's what each of them actually does.

Who wrote this: we make Anxora, one of the apps below. Every app — ours included — is described from its own App Store page and website, with a link to the source. Prices change by region and over time, so we list the pricing model, not amounts.

The apps at a glance

AppPlatformsPricing modelBuilt aroundWhat it collects (App Store label)Best for
HabitAware Keen2 / KeenLiteKeen2 bracelet + app · KeenLite on iPhone and Apple WatchBracelet is a one-time hardware purchase · KeenLite: free with in-app purchasesGesture detection that vibrates when your hand movesKeenLite: the developer does not collect data (App Store label)Biting you don't notice until it's already happening
SkinAwareiPhone, iPad, Apple Watch, Mac, Android, webFree core · Premium subscriptionLogging plus an HRT course and a communityLinked to you: contact info, health, user content, identifiersTracking, a structured course and peer support in one place
NailKeeperiPhone, iPad, MacFree with in-app purchases · Pro subscriptionNail photos over time and a quit timerLinked to you: email, user IDWatching your nails grow back, photo by photo
NailFreeiPhone, iPad, Apple Watch, MacFree with in-app purchases · ProHabit Reversal Training with an urge buttonThe developer does not collect data (App Store label)A guided HRT routine with Apple Watch reminders
UnbiteiPhone, iPad, MacFree with in-app purchases · subscription for full accessUrge logging with heatmaps and per-finger trackingLinked to you: purchase historyPeople who like detailed charts of their biting
UnbitteniPhone, iPad, MacFree with ads · one-off purchase removes ads60-second competing response and a 10-finger boardAds: identifiers and usage data may be used for tracking (App Store label)Trying HRT for free, with everything kept on the device
AnxoraiPhone, iPad, Apple WatchFree for one habit · Full access in-app purchaseCatching the urge and seeing the pattern: hour, place, feelingNot linked to you (usage, diagnostics); entries stay on your device and your own iCloudSeeing what sets it off, privately, without streaks

How to choose in a minute

  • You often don't notice you've startedHabitAware Keen2 or KeenLite
  • You want a course and other people going through itSkinAware
  • You want to see your nails grow backNailKeeper or Unbite
  • You want a guided HRT routine with Apple Watch remindersNailFree
  • You want to try it free and don't mind adsUnbitten
  • You want to see what sets it off, with no account and no streakAnxora

Each app, in more detail

HabitAware Keen2 / KeenLite

HabitAware · Keen2 bracelet + app · KeenLite on iPhone and Apple Watch · Bracelet is a one-time hardware purchase · KeenLite: free with in-app purchases

Good at

  • The bracelet learns your gesture and buzzes your wrist when it detects it.
  • Covers nail biting, skin picking and hair pulling.
  • KeenLite runs on an Apple Watch you may already own.

The catch

  • You train it on your own gestures, and detection isn't perfect.
  • The bracelet is an upfront hardware cost.
  • Built to interrupt the moment rather than show patterns over weeks.

Source: Website · KeenLite on the App Store

SkinAware

Amibi AB · iPhone, iPad, Apple Watch, Mac, Android, web · Free core · Premium subscription

Good at

  • Fast logging of episodes and resisted urges, with triggers and notes.
  • A Habit Reversal Training course, an accountability friend and a community chat.
  • Covers picking, pulling and biting, on almost every platform.

The catch

  • Community features mean your data is tied to an account.
  • The full course sits behind Premium.
  • Its name and focus lean towards skin picking.

Source: App Store · Website

NailKeeper

Pibardos LLC · iPhone, iPad, Mac · Free with in-app purchases · Pro subscription

Good at

  • Photo comparisons, including a video mode that shows recovery over time.
  • A widget, daily logging, tips and statistics.
  • One of the longest-running apps in the category.

The catch

  • The quit timer restarts when you bite — it's a streak by another name.
  • Asks for an email address.

Source: App Store

NailFree

Jason Culbertson · iPhone, iPad, Apple Watch, Mac · Free with in-app purchases · Pro

Good at

  • An urge button that walks you through a competing response.
  • Weekly progress photos and a tracker for filing and polish.
  • Apple Watch app with haptic reminders, and no data collected.

The catch

  • Progress is shown with streak rings and milestones.
  • iPhone and Apple Watch only.

Source: App Store

Unbite

Jonas Hiltl · iPhone, iPad, Mac · Free with in-app purchases · subscription for full access

Good at

  • Logs urges and episodes with triggers like stress, boredom and anxiety.
  • Heatmaps and per-finger tracking.
  • Photos of your nails growing back.

The catch

  • Streaks are part of the progress view.
  • Full access is a subscription.

Source: App Store

Unbitten

Seonyong Lee · iPhone, iPad, Mac · Free with ads · one-off purchase removes ads

Good at

  • A 60-second competing response exercise when the urge hits.
  • Trigger heatmaps, time-of-day charts and a weekly hand photo diary.
  • No account; entries stay on your device.

The catch

  • Free version shows ads, and the ad SDK can track across apps.
  • Uses a consecutive-day streak counter.

Source: App Store

Anxora

Anxora (that's us) · iPhone, iPad, Apple Watch · Free for one habit · Full access in-app purchase

Good at

  • One button, “The urge is here”, then Did it or Urge only — resisted urges count too.
  • Feelings and nail-specific triggers (rough edge, hangnail, deep focus, screen time), a week view and feeling–trigger links.
  • Awareness sessions for long stretches — a film, a deadline — with check-ins answered from the Lock Screen or the Watch.
  • Practice games for restless hands — Bubble Wrap, Glue Peel — plus guided breathing.
  • No account. Progress lives in Steps, which only add up. An optional weekly photo, and a PDF report you can hand to a therapist.

The catch

  • No community and no human coach inside the app.
  • iPhone and Apple Watch only — no Android, no web.
  • It doesn't detect biting on its own the way a sensor bracelet tries to; sessions check in, you answer.
  • Built around your pattern more than your nails — the weekly photo is there, but it isn't the centre of the app.

Source: anxora.app/nail-biting · App Store

The free route: notes and a nail file

A note on your phone with the time, what you were doing and how you felt, plus a nail file in every bag, is a real starting point. It costs nothing and keeps no data with anyone. The catch is that you do the pattern-finding yourself, and a rough edge you can't smooth right away is still the most common trigger.

What matters more than which app

  • The approach with the most research behind it for nail biting is Habit Reversal Training: notice the urge, then give your hands a competing response. Most apps here support some part of that.
  • Automatic biting and deliberate biting need different tools. A wrist buzz helps when you don't notice; knowing your triggers helps when you do.
  • For a lot of people the trigger isn't stress but a rough edge. Keeping a nail file within reach often does more than any app.
  • If biting has led to infections or damaged nail beds, or it's causing real distress, a therapist who works with BFRBs will help more than any app.

FAQ

What's the best free app to stop nail biting?

Unbitten is free with ads, Anxora is free for one habit, SkinAware has free core logging, and NailKeeper, NailFree, Unbite and KeenLite are free to download with paid upgrades. Which is best depends on whether you want a buzz, a method, photos or your pattern.

Is there an app that detects nail biting automatically?

HabitAware's Keen2 bracelet and KeenLite on Apple Watch use gesture detection and vibrate when they recognise the movement. It needs training and isn't perfect. Other apps rely on you to tap; Anxora's awareness sessions check in every few minutes so you don't have to remember.

Do nail biting apps actually work?

They work best as part of Habit Reversal Training — noticing the urge and replacing the movement — and when you keep using them. An app that makes logging fast and doesn't punish a bad day is more likely to stay on your phone.

Can I track nail biting without an account?

Yes. Anxora and Unbitten work without an account, and KeenLite and NailFree say they collect no data. NailKeeper asks for an email address, and SkinAware's community features use an account.

Can I share the data with my therapist?

SkinAware has therapist integration. Anxora creates a PDF self-monitoring report on your phone that you can send to whoever you choose.

See how Anxora handles nail biting

Real screens, step by step — what it does in the moment and what you see after a few weeks.

Nail biting tracker →

Sources

Checked 4 October 2026. Features and labels can change — if something here is out of date, write to support@anxora.app and we'll fix it.