---
title: Changelog vs release notes vs product updates
description: Changelog, release notes, product updates and version history are used interchangeably. Here is what each term usually means, who each is for, and which one your product needs.
canonical: https://relnotely.com/blog/changelog-vs-release-notes
published: 2026-09-22
updated: 2026-09-22
---

# Changelog vs release notes vs product updates

Four terms for nearly the same thing. The differences are who the reader is and how the entries are ordered — and once you see that, which one you need is obvious.

Changelog, release notes, product updates, version history, what's new: the terms are used interchangeably, and mostly that is fine. The differences that matter are **who the reader is** and **how the entries are ordered**.

## The four terms

| Term | Usually means | Reader | Ordered by |
| --- | --- | --- | --- |
| Changelog (file) | `CHANGELOG.md` in a repository | Developers | Version |
| Changelog (page) | A public, dated list of what shipped | Customers and prospects | Date |
| Release notes | The write-up of one release | Customers, or developers for an SDK | — |
| Product updates | Announcements, often by email or blog | Customers | Date |
| Version history | App store or installer update notes | People deciding whether to update | Version |

## Changelog vs release notes

**Release notes** are the account of a single release: what is in it and what it means. A **changelog** is all of them together, newest first. If you publish release notes on one page in date order, you have a changelog.

The distinction matters most for software people install. A library might publish detailed release notes for version 3.0, with a migration guide, while its changelog lists every version in a line or two each.

## Changelog vs product updates

"Product updates" tends to mean the marketing-flavoured version: a monthly email, a blog post with a hero image. "Changelog" tends to mean the complete record, including the small fixes that would never earn a blog post.

The complete record is the more useful of the two. A customer looking for whether a bug was fixed will not find it in a monthly highlights email, and the steady drip of small entries is what shows a product is looked after. The two also combine well: every entry goes on the changelog, and the biggest ones are also announced by email.

## Changelog vs version history

Version history is what an app store shows. It is ordered by version because the reader's question is "should I install this update?" A web app has no such question. Nobody chooses to update a web app, so nobody needs the version, and the date does that job instead.

## Which one you need

- **You ship a web app:** a public, dated changelog page written for customers. No version numbers.
- **You ship a library, SDK or CLI:** a `CHANGELOG.md` in the repository, by version. Add a public page too if you have customers who never open the repository.
- **You ship a mobile or desktop app:** version history in the store, because the store requires it, and a changelog page for everything the store's character limit cuts.
- **You ship all of them:** write each change once, at the customer's level of detail, and publish it in each place.

[CHANGELOG.md vs a public changelog page](/blog/changelog-md-vs-public-changelog) goes further into keeping both without writing everything twice.

## Questions

**What is the difference between a changelog and release notes?**

Release notes describe one release. A changelog is the running record of all releases, newest first. A public changelog page is, in practice, a list of release notes.

**Are product updates the same as a changelog?**

They cover the same ground. "Product updates" usually means customer-facing announcements written in marketing language, often sent by email; "changelog" usually means the complete dated record. Many companies publish one page and call it either.

**What is version history?**

The list of versions an app store or installer shows, with a short note for each. It is ordered by version number and written for people deciding whether to update an installed app.

**Which one does a SaaS product need?**

A dated public changelog, written for customers. Web apps have no versions a customer installs, so the date is the version and a title that describes the change is what matters.

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Published by Relnotely at https://relnotely.com/blog/changelog-vs-release-notes