# Lumen Calculator vs PatchPal

The clearest difference is price: PatchPal at Free against Lumen Calculator's $2.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

PatchPal is free to download; Lumen Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Lumen Calculator | PatchPal |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 27 months | — |
| Monetization | Paid | — |
| Size | 1 MB | 14 MB |
| Requires iOS | 13 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [Cem Hurrell](https://appshunter.io/developer/1709784175) |

## What reviewers say

### Lumen Calculator

[App page](https://appshunter.io/ios/app/lumen-calculator/id1412317888)

This physics and math tool quickly converts between lumens, lux, and candelas. It provides instant calculations with copyable results and includes reference formulas. Optimized for everyday use, it supports high precision and various units.

**Highlights:** Instant calculation, Copyable results, Reference formulas, High precision (16 decimal places), Supports various units, Ad-free and private

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

**In-app purchases:** none


### PatchPal

[App page](https://appshunter.io/ios/app/patchpal-lighting-tool/id6468351720)

**In-app purchases:** none


## Frequently asked questions

### Is Lumen Calculator free?

Lumen Calculator costs $2.99, with no in-app purchases.

### Is PatchPal free?

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

### Do Lumen Calculator or PatchPal have ads?

Neither Lumen Calculator nor PatchPal 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.*