# TSPROF SharpNote vs Angle of Knife

The clearest difference is in-app purchases: TSPROF SharpNote at none against Angle of Knife's 4. Angle of Knife's advantage is update cadence (weekly vs every 8 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Angle of Knife sells 4 in-app purchases, starting at $1.99 per month. TSPROF SharpNote asks for nothing beyond the download.

TSPROF SharpNote ships an update every 8 months, Angle of Knife weekly. The most recent releases landed on September 26, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | TSPROF SharpNote | Angle of Knife |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/angle-of-knife-sharpening/id6739965153/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 8 MB | 54 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [PROFIL, OOO](https://appshunter.io/developer/1752070810) | [Tetiana Asieieva](https://appshunter.io/developer/1787701328) |

## What reviewers say

### 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


### Angle of Knife

[App page](https://appshunter.io/ios/app/angle-of-knife-sharpening/id6739965153)

This app helps users find the ideal sharpening angle for any knife, from kitchen blades to outdoor tools. Its user-friendly interface makes precise sharpening accessible to both beginners and experienced users.

**Highlights:** Calculate ideal sharpening angles, Supports all knife types, User-friendly interface, Precision sharpening guidance, Available on iOS

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium – 1 Month! | $1.99 | per month |
| Premium – 3 Months! | $4.99 | per 3 months |
| Premium – 6 Months! | $7.99 | per 6 months |
| Premium – 1 Year! | $12.99 | per year |


## Frequently asked questions

### Is TSPROF SharpNote free?

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

### Is Angle of Knife free?

Angle of Knife is free to download, with in-app purchases available.

### Do TSPROF SharpNote or Angle of Knife have ads?

Neither TSPROF SharpNote nor Angle of Knife shows ads.

### Which is updated more often, TSPROF SharpNote or Angle of Knife?

TSPROF SharpNote ships an update every 8 months, and Angle of Knife weekly. Most recently, TSPROF SharpNote was updated on September 26, 2026 and Angle of Knife on October 2, 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.*