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HeartDevMinecraft mod for 1.21.4

API that allows developers to easly access the health bar rendering system

client onlynewest supported 1.21.4UtilityLibrary
Latest version
1.1.3.4.1-devonly21.0-21.1
Minecraft
1.21 to 1.21.4
Java
Java 21+
Loader
NeoForge
Licence
MIT
Downloads
487
Updated
3 mo ago
Available on
Modrinth
Space NodePartner

Host HeartDev servers

One click and HeartDev is installed with the right loader, on hardware built for it.

  • 1.21.4
  • NeoForge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

Every version HeartDev declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.4NeoForge21+declared3 Dec 2024
1.21.3NeoForge21+declared23 Oct 2024
1.21.2NeoForge21+declared22 Oct 2024
1.21.1NeoForge21+declared8 Aug 2024
1.21NeoForge21+declared13 Jun 2024

Download

From HeartDev’s own host. Nothing is re-hosted here.

All 27 releases
1.1.3.4.1-devonly21.0-21.1alpha17 May 2026

heartdev-1.1.3.4.1-devonly21.0-21.1.jar · 0.1 MB · for 1.21, 1.21.1

Download latest
b3dd05c1418f…
Older versions24
  • 1.1.3.11-devonly21.0-21.116 Nov 20251.21, 1.21.10.1 MB24 downloadsb154d93db74f…Get
  • 1.1.3.9-devonly21.0-21.120 Oct 20251.21, 1.21.10.1 MB15 downloads9b70a527b8f8…Get
  • 1.1.3.8-devonly21.0-21.128 Sept 20251.21, 1.21.10.1 MB18 downloads81154ff7199b…Get
  • 1.1.3.7-devonly21.0-21.125 Sept 20251.21, 1.21.10.1 MB14 downloadsdaf51bd2b4ed…Get
  • 1.1.3.6-devonly21.0-21.119 Sept 20251.21, 1.21.10.1 MB17 downloads05706b49bb1b…Get
  • 1.1.3.4-devonly21.0-21.118 Aug 20251.21, 1.21.10.1 MB16 downloadsc6306f0e0341…Get
  • 1.1.3.3-devonly21.0-21.118 Aug 20251.21, 1.21.10.1 MB19 downloadsbb782535df62…Get
  • 1.1.3.2-devonly21.0.21.114 Aug 20251.21, 1.21.10.1 MB18 downloadseeee0ec67a0a…Get
  • 1.1.3.1-devonly21.0-21.114 Aug 20251.21, 1.21.10.1 MB18 downloads8eb64a51f386…Get
  • 1.1.3-neoforge21.413 Jul 20251.21.40.1 MB18 downloadsc1a10f0f2b1c…Get
  • 1.1.3-neoforge21.2-21.313 Jul 20251.21.2, 1.21.30.1 MB17 downloads2a15a355a9ef…Get
  • 1.1.3-neoforge21.0-21.113 Jul 20251.21, 1.21.10.1 MB24 downloads67564645e9ec…Get
  • 1.1.2-neoforge21.416 Jun 20251.21.40.1 MB20 downloads4b869f60ec21…Get
  • 1.1.2-neoforge21.2-21.316 Jun 20251.21.2, 1.21.30.1 MB16 downloadsf48caaa6b6a3…Get
  • 1.1.2-neoforge21.0-21.116 Jun 20251.21, 1.21.10.1 MB23 downloads576e98af64bc…Get
  • 1.1.1-neoforge21.411 Jun 20251.21.40.1 MB17 downloadsdf3b9793e486…Get
  • 1.1.1-neoforge21.2-21.311 Jun 20251.21.2, 1.21.30.1 MB16 downloads9de6520f6875…Get
  • 1.1.1-neoforge21.0-21.111 Jun 20251.21, 1.21.10.1 MB19 downloadsd552a9d2d3e6…Get
  • 1.1.0-neoforge21.411 Jun 20251.21.40.1 MB18 downloads6fd8ac19bb5c…Get
  • 1.1.0-neoforge21.2-21.311 Jun 20251.21.2, 1.21.30.1 MB14 downloadsa69cc8cc9489…Get
  • 1.1.0-neoforge21.0-21.111 Jun 20251.21, 1.21.10.1 MB16 downloads634b154fa89a…Get
  • 1.1.010 Jun 20251.21, 1.21.10.1 MB21 downloads162949c389c9…Get
  • 1.0.610 Jun 20251.21.10.1 MB17 downloadsdca221dccf65…Get
  • 1.0.59 Jun 20251.21.10.1 MB27 downloadsa6ce5b6b8c94…Get

Frequently asked

Does HeartDev work on Minecraft 1.21.4?

Yes. 1.21.4 is the newest Minecraft version HeartDev declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does HeartDev support?

Everything the author has declared, from 1.21 up to 1.21.4. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install HeartDev on the client or the server?

The client only. There is nothing to install on the server, so it works on any server you can already join.

Which loader does HeartDev need?

NeoForge. A build for one loader will not load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for HeartDev?

Java 21 or newer, because that is what the newest Minecraft release it supports requires. The requirement comes from the game rather than from the mod itself.

What licence is HeartDev under?

MIT, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install HeartDev?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download HeartDev safely?

From the author's own page on Modrinth, which is where the data here is synced from. MCReference never mirrors, re-hosts or repackages a file: every download button points at the original source, so you get exactly what the author published.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

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Last checked 6 d ago against Modrinth. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .