# Sensors NM vs TSPROF SharpNote

The clearest difference is review sentiment: TSPROF SharpNote at 100% against Sensors NM's 63%. TSPROF SharpNote also leads on in-app purchases (none vs 8). Sensors NM's advantage is update cadence (every 4 weeks vs every 8 months) and iOS requirement (15.6 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Sensors NM sells 8 one-off in-app purchases. TSPROF SharpNote asks for nothing beyond the download.

Sensors NM ships an update every 4 weeks, TSPROF SharpNote every 8 months. The most recent releases landed on September 14, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Sensors NM | TSPROF SharpNote |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/sensors-nm/id1554884319/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 62.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 8 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 11 MB | 8 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sergey Krasavin](https://appshunter.io/developer/1554884321) | [PROFIL, OOO](https://appshunter.io/developer/1752070810) |

## What reviewers say

### Sensors NM

[App page](https://appshunter.io/ios/app/sensors-nm/id1554884319)

Monitor IoT devices and sensors, both public and your own. Visualize data with custom dashboards and historical plots. Receive important notifications and access aviation weather reports.

**Highlights:** Monitor public and private IoT sensors, Map view of public sensors, Create custom sensor dashboards, Plot sensor data over time, Receive project notifications, View aviation METAR reports

**Features:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Donation (Level 1) | $0.99 | one-time |
| Small tips | $1.99 | one-time |
| Donation (Level 2) | $1.99 | one-time |
| Donation (Level 3) | $3.99 | one-time |
| Medium tips | $4.99 | one-time |
| Donation (Level 4) | $5.99 | one-time |
| Huge tips | $10.99 | one-time |
| Donation (Level 5) | $10.99 | one-time |


### TSPROF SharpNote

[App page](https://appshunter.io/ios/app/tsprof-sharpnote/id6504391843)

Log your knife sharpening sessions, track angles, stones, and finishes. Capture and share photos of your results with a community of enthusiasts. Perfect for experiments and maintaining sharpness.

**Highlights:** Log sharpening sessions, Track angles and stones, Record finishing supplies, Save sharpness data, Capture and share photos, Join sharpening community

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sensors NM free?

Sensors NM is free to download, with in-app purchases available.

### Is TSPROF SharpNote free?

TSPROF SharpNote is free to download, with no in-app purchases.

### Do Sensors NM or TSPROF SharpNote have ads?

Neither Sensors NM nor TSPROF SharpNote shows ads.

### Which is updated more often, Sensors NM or TSPROF SharpNote?

Sensors NM ships an update every 4 weeks, and TSPROF SharpNote every 8 months. Most recently, Sensors NM was updated on September 14, 2026 and TSPROF SharpNote on September 26, 2026.

---

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