# LED Calc. vs Smart Level

The clearest difference is rating: Smart Level at 3.5 against LED Calc.'s 1.0. Smart Level also leads on ads (none vs shown) and iOS requirement (7.0 vs 12.0). LED Calc.'s advantage is in-app purchases (none vs 1). On price, ratings volume, update cadence and device support there is nothing between them.

Both are free to download. Smart Level sells 1 one-off in-app purchase. LED Calc. asks for nothing beyond the download.

Smart Level holds the better App Store score, 3.5 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

LED Calc. ships an update every 10 months, Smart Level every 12 months. The most recent releases landed on June 5, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | LED Calc. | Smart Level |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/led-calc/id556845805/reviews) | **[3.5 (2 ratings)](https://appshunter.io/ios/app/smart-level/id1115083676/reviews)** |
| Number of ratings | 1 | **2** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 10 months** | Every 12 months |
| Monetization | Ad-supported | **Free** |
| Size | 17 MB | 23 MB |
| Requires iOS | 12.0 | **7.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jibiki Works](https://appshunter.io/developer/556845808) | [NETIGEN Kluzowicz sp. j.](https://appshunter.io/developer/892331873) |

## What reviewers say

### LED Calc.

[App page](https://appshunter.io/ios/app/led-calc/id556845805)

This application assists in designing electronic circuits by calculating the necessary resistor values for LEDs. It simplifies the process of determining the correct components for your LED projects.

**Highlights:** Resistor value calculation, LED circuit design assistance, Component value determination

**Features:** macOS Compatibility

**In-app purchases:** none


### Smart Level

[App page](https://appshunter.io/ios/app/smart-level/id1115083676)

This utility app transforms your smartphone into a precise spirit level. It measures horizontal and vertical surfaces, displaying the angle of inclination. Ideal for home repairs and professional use, it offers ease of use and accurate readings.

**Highlights:** Smartphone spirit level, Measures horizontal and vertical surfaces, Displays angle of inclination, Bull's eye level for 2D measurement, Precise and easy to use

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AdFree | $0.99 | one-time |


## Frequently asked questions

### Is LED Calc. free?

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

### Is Smart Level free?

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

### Which has better reviews, LED Calc. or Smart Level?

Smart Level is rated higher. LED Calc. averages 1.0 out of 5 from 1 ratings, while Smart Level averages 3.5 from 2 ratings.

### Do LED Calc. or Smart Level have ads?

LED Calc. shows ads; Smart Level does not.

### Which is updated more often, LED Calc. or Smart Level?

LED Calc. ships an update every 10 months, and Smart Level every 12 months. Most recently, LED Calc. was updated on June 5, 2026 and Smart Level on September 26, 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.*