# Slope Calculator vs LevelNote

The clearest difference is update cadence: LevelNote at every 2 weeks against Slope Calculator's every 14 months. LevelNote also leads on review sentiment (75% vs 58%). Slope Calculator's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Slope Calculator sells 1 one-off in-app purchase and LevelNote sells 2 in-app purchases, starting at $0.49 per month. Whichever you choose, the download price is not the number that matters.

Slope Calculator ships an update every 14 months, LevelNote every 2 weeks. The most recent releases landed on November 7, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Slope Calculator | LevelNote |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (105 ratings)](https://appshunter.io/ios/app/slope-calculator-calc/id1561129699/reviews)** | — |
| Number of ratings | **105** | — |
| Positive reviews | 58.3% of reviews | **75.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 5 MB | 14 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Phan Nhat Đang](https://appshunter.io/developer/1437390098) | [Tadahiro Inoue](https://appshunter.io/developer/1857960601) |

## What reviewers say

### Slope Calculator

[App page](https://appshunter.io/ios/app/slope-calculator-calc/id1561129699)

Calculate slope in angle, percentage, or ratio by inputting two sides of a right triangle. This intuitive and easy-to-use application provides the remaining necessary values.

**Highlights:** Calculate slope as angle, Calculate slope as percentage, Calculate slope as ratio, Input two sides of a right triangle, Calculate remaining triangle values, Intuitive and easy to use

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $1.99 | one-time |


### LevelNote

[App page](https://appshunter.io/ios/app/levelnote-digital-field-book/id6756013665)

This digital field book simplifies construction site leveling surveys. Measure elevations, perform set-outs, and manage all your survey records and benchmarks efficiently. Organize data by site for seamless team collaboration.

**Highlights:** Automated elevation calculations, Set-out mode for target elevations, Benchmark management and sharing, Site organization for projects, Survey record saving and CSV export, Customizable columns for notes and offsets

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LevelNote Pro | $0.49 | per month |
| LevelNote | $19.99 | one-time |


## Frequently asked questions

### Is Slope Calculator free?

Slope Calculator is free to download, with in-app purchases available.

### Is LevelNote free?

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

### Do Slope Calculator or LevelNote have ads?

Neither Slope Calculator nor LevelNote shows ads.

### Which is updated more often, Slope Calculator or LevelNote?

Slope Calculator ships an update every 14 months, and LevelNote every 2 weeks. Most recently, Slope Calculator was updated on November 7, 2026 and LevelNote on November 9, 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.*