# CRC Calculator vs ESPHome

The clearest difference is price: ESPHome at Free against CRC Calculator's $0.99. ESPHome also leads on update cadence (weekly vs every 13 months). CRC Calculator's advantage is in-app purchases (none vs 5). On ads, device support and iOS requirement there is nothing between them.

ESPHome is free to download; CRC Calculator costs $0.99 up front. ESPHome sells 5 one-off in-app purchases. CRC Calculator asks for nothing beyond the download.

CRC Calculator ships an update every 13 months, ESPHome weekly. The most recent releases landed on October 17, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | CRC Calculator | ESPHome |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 13 months | **Weekly** |
| Monetization | Paid | — |
| Size | 1 MB | 11 MB |
| Requires iOS | 17.6 | **17** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Firmtronics Pty. Ltd.](https://appshunter.io/developer/1318424787) | [Dominic Grimm](https://appshunter.io/developer/1849631811) |

## What reviewers say

### CRC Calculator

[App page](https://appshunter.io/ios/app/crc-calculator/id984488943)

This utility generates cyclic redundancy check (CRC) bytes from input data using polynomial division. It supports 8, 16, 32, and 64-bit check bytes and allows data input via manual entry or file upload. Users can choose between normal or reversed CRC formats.

**Highlights:** Generates 8, 16, 32, & 64-bit CRC bytes, Input data via manual entry (hex), Source data from uploaded files, Supports normal and reversed CRC formats, Integrated document explorer

**Features:** Vision Pro support

**In-app purchases:** none


### ESPHome

[App page](https://appshunter.io/ios/app/esphome-wled-device-manager/id6754686752)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.49 | one-time |
| Medium Tip | $1.99 | one-time |
| Large Tip | $2.99 | one-time |
| Extra Large Tip | $5.99 | one-time |
| Massive Tip | $12.99 | one-time |


## Frequently asked questions

### Is CRC Calculator free?

CRC Calculator costs $0.99, with no in-app purchases.

### Is ESPHome free?

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

### Do CRC Calculator or ESPHome have ads?

Neither CRC Calculator nor ESPHome shows ads.

### Which is updated more often, CRC Calculator or ESPHome?

CRC Calculator ships an update every 13 months, and ESPHome weekly. Most recently, CRC Calculator was updated on October 17, 2026 and ESPHome on October 28, 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.*