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SPECIFICTION
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ACNH Save Editor

github.com

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Spec score 8.6 #3 of 26 in Game Save Editors

What it is

ACNH Save Editor is a free, open-source Nintendo Switch homebrew application for editing Animal Crossing: New Horizons saves. It changes Wallet Bells, Bank Bells, Nook Miles, house-loan values, and pocket items across the game’s save files. A searchable database contains more than 13,000 items, while Favorites presents 22 curated entries in a paginated alphabetical list. Pocket tools can clear a selected slot and save or load up to five loadouts on the SD card. Before each write, the editor makes a byte-verified SD-card backup; ZL can roll back to the latest backup. It recalculates hashes and checksums and repairs hashes after modifications. Edits are capped at in-game maximums and operate offline on-console. Version 1.4.0 edits only the primary resident, Villager0. Installation requires Atmosphère custom firmware and launching through Title Override or a forwarder, with SD-card and DBI/MTP packages provided.

Spec sheet

Purpose
ACNH Save Editor is a native Nintendo Switch save editor for Animal Crossing: New Horizons.Read 9 Oct 2026 · github.com
Support
The README directs users with problems to open a GitHub Issue or ask in the GBATemp thread.Read 9 Oct 2026 · github.com
Maker
The maker profile identifies Christopher Brown as a software developer and reverse engineer based in Texas, USA.Read 9 Oct 2026 · github.com
Backups
The editor creates byte-verified SD card backups before writes and offers ZL rollback to the last backup.Read 8 Oct 2026 · github.com
Compatibility
The README lists Animal Crossing: New Horizons version 3.0.3 as tested and says the editor handles personal.dat and main.dat.Read 9 Oct 2026 · github.com
Distribution
The maker provides standard SD-card and DBI/MTP installation packages through GitHub Releases.Read 9 Oct 2026 · github.com
Economy editing
It edits Wallet Bells, Bank Bells, Nook Miles, and the house loan across personal.dat and main.dat.Read 9 Oct 2026 · github.com
Favorites
The Favorites menu lists 22 curated items and sorts them alphabetically across pages.Read 9 Oct 2026 · github.com
Install requirement
The Switch must run Atmosphère custom firmware, and the app must launch through Title Override or a forwarder rather than Album/Applet mode.Read 8 Oct 2026 · github.com
Installation options
The maker provides a standard SD-card installation and a DBI/MTP installation package.Read 8 Oct 2026 · github.com
Integrity handling
The editor recalculates save checksums after modifications and describes an automatic repair loop for saves affected by older versions.Read 9 Oct 2026 · github.com
Intended use
The maker describes this as an educational project and says it is not affiliated with Nintendo.Read 8 Oct 2026 · github.com
Item search
Its native Switch keyboard can search a database of more than 13,000 items by name.Read 9 Oct 2026 · github.com
Known gaps
The README says map editing and design-pattern preview are unavailable, and turnip-price preview is under consideration.Read 9 Oct 2026 · github.com
Known limit
Version 1.4.0 edits only the primary resident, Villager0; multi-resident support is planned for a later version.Read 8 Oct 2026 · github.com
Pocket tools
The editor includes a visual pocket-slot picker and supports saving and loading up to five custom pocket loadouts to the SD card.Read 9 Oct 2026 · github.com
Requirements
Installation requires a Switch running Atmosphère custom firmware, and the app must be launched through Title Override or a forwarder for full memory and SD-card access.Read 9 Oct 2026 · github.com
Safety limits
Edits are clamped to in-game maximums, and the app says it edits only items and values present in the base game.Read 9 Oct 2026 · github.com
Save integrity
It recalculates save hashes and checksums and automatically repairs hashes after modifications.Read 8 Oct 2026 · github.com
Save protection
Before each write, the app creates a byte-verified SD-card backup and supports rollback to the last backup with ZL.Read 9 Oct 2026 · github.com
Security scope
The app operates offline on-console and clamps edits to in-game maximums; its maker warns that save modification still carries risk.Read 8 Oct 2026 · github.com
Supported edits
It edits wallet, bank, Nook Miles, house loan, and pocket items across the game's save files.Read 8 Oct 2026 · github.com
Supported residents
Version 1.4.0 edits only the primary resident, with multi-resident support described as planned for version 1.6.Read 9 Oct 2026 · github.com

Plans and prices

ACNH Save Editor Free Free homebrew save editor; requires Nintendo Switch with Atmosphère custom firmware Read 9 Oct 2026 · github.com

Every ACNH Save Editor plan and price →

Strong points and limits

Strong points

  • Free open-source homebrew
  • 13,000-plus item search
  • Byte-verified backups
  • Rollback with ZL
  • Checksum and hash repair

Limits

  • Requires Atmosphère custom firmware
  • Only primary resident supported
  • Map editing unavailable
  • Save modification still carries risk

Who it suits

It suits Nintendo Switch users running Atmosphère who need to edit Animal Crossing: New Horizons saves. The maker describes it as an educational project and warns that save modification carries risk.

Verdict

ACNH Save Editor provides focused economy and inventory changes with backups, rollback, and integrity handling. Its Switch custom-firmware requirement and single-resident scope define who can use it.

Where Specifiction places it

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