# CRC Calculator vs 74Log

The clearest difference is price: 74Log at Free against CRC Calculator's $0.99. 74Log also leads on update cadence (weekly vs every 13 months) and iOS requirement (13.0 vs 17.6). On ads, in-app purchases and device support there is nothing between them.

74Log is free to download; CRC Calculator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CRC Calculator ships an update every 13 months, 74Log weekly. The most recent releases landed on September 1, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | CRC Calculator | 74Log |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Weekly** |
| Monetization | Paid | — |
| Size | 1 MB | 35 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Firmtronics Pty. Ltd.](https://appshunter.io/developer/1318424787) | [Neil Fincham](https://appshunter.io/developer/1844512824) |

## 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


### 74Log

[App page](https://appshunter.io/ios/app/74log/id6755448638)

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

**In-app purchases:** none


## Frequently asked questions

### Is CRC Calculator free?

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

### Is 74Log free?

74Log is free to download, with no in-app purchases.

### Do CRC Calculator or 74Log have ads?

Neither CRC Calculator nor 74Log shows ads.

### Which is updated more often, CRC Calculator or 74Log?

CRC Calculator ships an update every 13 months, and 74Log weekly. Most recently, CRC Calculator was updated on September 1, 2026 and 74Log on September 16, 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.*