Comparison

Notio vs Stop Nail Biting

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Notio

This app helps cyclists improve their aerodynamics by measuring drag coefficient and providing performance analysis. It works with dedicated sensor hardware and compatible Garmin devices, allowing for standalone recording and real-time data display. Analyze your performance over time and optimize your riding technique.

Highlights
  • Measure aerodynamic drag coefficient (CdA)
  • Benchmark and analyze aero performance
  • Track activities and statistics
  • Sync with ANT+ bike sensors
  • Standalone recording with sensor hardware
  • Real-time wind speed and CdA display
Read full description

Notio combines sensor hardware and this app to improve your aerodynamics by transforming your drag coefficient into better performance. You do not need to carry your phone when you ride. The Notio can be used to record your ride in standalone mode and is compatible with Connect IQ compatible Garmin devices. The Garmin device can start/stop your Notio and display CdA and wind speed values while you ride. Notio’s app includes the ability to: • Benchmark and analyze your aero performances through time. • Track your activities and their related statistics. • Sync with multiple ANT+ compatible bike sensors. (1) Notio calculates: • CdA (aerodynamic drag coefficient) • Relative altitude • Air density • Wind Speed • Acceleration • Roll • Vibration The Notio app breaks speed down into a science. Helping you turn facts and figures into techniques and technology so that you can find your perfect riding sweet spot. Learn more about Notio app and devices at Notio.ai. (1) See compatible devices at Notio.ai/compatibility

About

Stop Nail Biting

This app helps you quit nail biting through guided awareness exercises. It focuses on noticing sensations to reduce automatic urges, requiring just one minute of practice twice daily. Track your progress with streaks and build a healthier relationship with your hands.

Highlights
  • Guided curiosity sessions
  • Daily awareness practice
  • Supportive reminders
  • Streak tracking
  • No guilt or shame approach
  • Science-inspired habit rewiring
Features
Read full description

Stop biting your nails — without willpower, bitter polish, or guilt. Calm Nails is a simple, science-inspired habit app built around one idea: awareness rewires automatic behavior. Instead of fighting urges, you’ll practice short guided “curiosity sessions” that help you notice sensations in your hands and nails—so the impulse loses its grip over time. It’s not a panic button. It’s a tiny daily practice that retrains your brain. How Calm Nails Works 1 minute, twice per day. Do a short Morning Session and Evening Session Follow gentle guidance to explore sensations (pressure, tingling, texture, tension) Learn to pause without force, and let the urge pass naturally With consistency, nail-biting becomes less automatic—and easier to stop for good. What You’ll Love Cure with Curiosity Build a new relationship with your hands through calm attention. No punishment. No shame. Just noticing. Daily Reminders (supportive, not pushy) Set your preferred times and let Calm Nails nudge you back to your practice—without guilt or pressure. Streaks & Consistency Tracking Stay motivated with simple streak tracking designed to keep the habit lightweight and doable. No Gimmicks No bitter polish. No “just stop.” No shame spirals. Calm Nails is built for real humans. Realistic Results Most people notice the urge softening within 1 week with steady practice. Consistency matters more than perfection—even small sessions count. Use Calm Nails free for 14 days, then keep going with a one-time purchase or a monthly plan. Terms of Use: https://www.calmnails.com/terms https://www.apple.com/legal/internet-services/itunes/dev/stdeula

Screenshots

Notio3 screens
Stop Nail Biting4 screens

Verdict

The call

The clearest difference is review sentiment: Stop Nail Biting at 100% against Notio's 33%. Stop Nail Biting also leads on rating (5.0 vs 2.5) and update cadence (monthly vs every 4 months). Notio's advantage is in-app purchases (none vs 5) and iOS requirement (15.0 vs 18.2). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Stop Nail Biting sells 5 in-app purchases, starting at $3.99 per month. Notio asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Stop Nail Biting holds the better App Store score, 5.0 against 2.5. That said, the two scores are not equally well evidenced: Stop Nail Biting has 10 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 33% of Notio's written reviews are positive against 100% of Stop Nail Biting's.

UpkeepUpdate frequency

Notio ships an update every 4 months, Stop Nail Biting monthly. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

Scorecard7 real differences · 3 level
Notio versus Stop Nail Biting: the parameters behind the verdict, then further details
ParameterNotioStop Nail Biting
PriceFreeFree
Rating2.5 (2 ratings)5.0 (10 ratings) — better
Positive reviews33.3% of reviews100.0% of reviews — better
Number of ratings210 — better
Update frequencyEvery 4 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPod — betteriPhone
Requires iOS15.0 — better18.2
Further details — not scored
Size38 MB24 MB
Age rating12++4
DeveloperNotio Technologies inc.Phil Starkovich

Customer experience

Notio

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

Stop Nail Biting

All ratings10 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Notio

No in-app purchases

5 purchases

Stop Nail Biting

Subscriptions3
  • Commit to Quit - Monthly$3.991 Month
  • Commit to Quit - Monthly w/ Trial3 Days trial$3.991 Month
  • Commit to Quit (Annual)$19.991 Year
One-time2
  • Commit to Quit - Lifetime (Special)$9.99
  • Commit to Quit (Lifetime)$19.99

Questions

Is Notio free?
Notio is free to download, with no in-app purchases.
Is Stop Nail Biting free?
Stop Nail Biting is free to download, with in-app purchases available.
Which has better reviews, Notio or Stop Nail Biting?
Stop Nail Biting is rated higher. Notio averages 2.5 out of 5 from 2 ratings, while Stop Nail Biting averages 5.0 from 10 ratings.
Do Notio or Stop Nail Biting have ads?
Neither Notio nor Stop Nail Biting shows ads.
Which is updated more often, Notio or Stop Nail Biting?
Notio ships an update every 4 months, and Stop Nail Biting monthly. Most recently, Notio was updated on October 29, 2026 and Stop Nail Biting on October 30, 2026.

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