# Suma Calc vs Lean

The clearest difference is device support: Suma Calc at 3 against Lean's 1. Suma Calc also leads on iOS requirement (13.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Suma Calc | Lean |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/lean-inclinometer/id6780365308/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Monetization | — | Free |
| Size | 17 MB | 7 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ivan Lutaienko](https://appshunter.io/developer/1880473986) | [Carl Sieber](https://appshunter.io/developer/6777791133) |

## What reviewers say

### Suma Calc

[App page](https://appshunter.io/ios/app/suma-calc/id6760128830)

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

**In-app purchases:** none


### Lean

[App page](https://appshunter.io/ios/app/lean-inclinometer/id6780365308)

This utility app transforms your iPhone into a live inclinometer, displaying pitch and roll angles simultaneously for easy reading. It provides customizable warnings with visual and haptic feedback as you approach or exceed set limits. Designed for off-road enthusiasts, it offers a clear, glanceable view of your vehicle's tilt without needing GPS or an internet connection.

**Highlights:** Simultaneous pitch and roll display, Customizable caution and limit warnings, Haptic feedback for alerts, One-tap zeroing for mount angle, Multiple dashboard color themes, Works offline, no GPS or account needed

**Features:** macOS Compatibility, iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is Suma Calc free?

Suma Calc is free to download, with no in-app purchases.

### Is Lean free?

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

### Do Suma Calc or Lean have ads?

Neither Suma Calc nor Lean shows ads.

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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.*