# Notio vs Stop Nail Biting

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.

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.

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.

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.

## The numbers

| Metric | Notio | Stop Nail Biting |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (2 ratings)](https://appshunter.io/ios/app/notio/id1463217936/reviews) | **[5.0 (10 ratings)](https://appshunter.io/ios/app/stop-nail-biting-calmnails/id6746272768/reviews)** |
| Number of ratings | 2 | **10** |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 38 MB | 24 MB |
| Requires iOS | **15.0** | 18.2 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | +4 |
| Developer | [Notio Technologies inc.](https://appshunter.io/developer/1348398928) | [Phil Starkovich](https://appshunter.io/developer/1737048219) |

## What reviewers say

### Notio

[App page](https://appshunter.io/ios/app/notio/id1463217936)

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

**In-app purchases:** none


### Stop Nail Biting

[App page](https://appshunter.io/ios/app/stop-nail-biting-calmnails/id6746272768)

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:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Commit to Quit - Monthly | $3.99 | per month |
| Commit to Quit - Monthly w/ Trial | $3.99 | per month |
| Commit to Quit (Annual) | $19.99 | per year |
| Commit to Quit - Lifetime (Special) | $9.99 | one-time |
| Commit to Quit (Lifetime) | $19.99 | one-time |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*