TomoToolNX Switch

TomoToolNX
General
Author	miiazertyy
Type	Save Managers and Editors
Version	1.3.7
License	GPL-3.0
Last Updated	2026/06/09
Links
Download
Website
Source

TomoToolNX is a Nintendo Switch homebrew tool for editing Tomodachi Life save data directly from the console. Both WebUI and on-Switch modes are supported.

The project is based on LivinTheDreamToolkit by the UGC editor contributors. Mii sharing is based on ShareMii by Star-F0rce. The save-file parser, generated data tables (wishes, habits, clothes, coordinates, treasures), Map.sav schema hashes, UGC kind table, housing-edit safety rules, and the Custom BC1/BC3 texture encoder are derived from alexislours/ltd-save-editor (AGPL-3.0-or-later). Early reference for save key hashes came from tlmodding/ltd-gamedata.

Features

• Textures — swap any UGC texture (FacePaint, Food, Goods, Thumbs) by importing a PNG. Images are resized, alpha-cleaned, and re-encoded automatically.
• Miis — edit just about everything visible: stats, words, habits, belongings, relationships, housing, and the social graph. Import / export individual Miis as .ltd files.
• TomodachiShare — browse the online catalogue, search and filter, preview, and download shared Miis directly into a save slot.
• Player save — adjust the global player fields: name, island, money, currency, birthday, region, languages, wishes, fountain, island size, and more.
• Map — view your island as a 120×80 tile grid, click any object to inspect and edit its position, rotation, linked map ID, or which Miis live in it; place new objects or remove existing ones. Works on both the WebUI and the on-Switch controller / touch UI.
• Backups — your save is copied to the SD card before any edit, and every texture import keeps a per-file backup. Restore from inside the app.
• MTP over USB — the SD card mounts as a USB drive while the WebUI is running (via libhaze).
• Translations — both the WebUI and the on-Switch UI can be translated by editing plain text files. Contributions welcome.
• Update check — on launch, lets you know when a newer release is up on GitHub.

Installation

Copy TomoToolNX.nro to /switch/TomoToolNX/ on your SD card and launch from the homebrew menu.

User guide

Launch the app, pick a user account, decide what to do with any existing save backup, then choose a mode:

• WebUI — starts a local HTTP server. Open http://<switch-ip>:8080 on any device on the same network and edit from the browser. The SD card also mounts over USB while the server is running.
• On-Switch — browse and edit directly with the controller. Tabs are switched with L / R (or ZL / ZR); each tab shows its own controls at the bottom of the screen.

Press B to back out at any point. The app prompts before discarding unsaved changes.

A few notes on textures: PNGs are auto-resized to the target format, a transparent background with clean edges gives the best result, and encoding is sRGB-aware to match the game's color reproduction. The default Custom encoder is a faithful port of ltd-save-editor's BC1/BC3 encoder; a faster PCA-only fallback is available in the settings.

Screenshots

Changelog

v1.3.7

• Added Japanese translation
• Libhazefix directly wired with make setup for easier building
• Customizable theme colors because why not
• UI enhancements
• Bug fixes

v1.3.6

• Added WebUI translations and sync from hb app language
• Added island stats (WebUI only) in the Player tab
• More editing features in the Map tab
• Bug fixes

v1.3.5

• QoL features and bug fixes
• Compressed the bundled save file (-4mo)

v1.3.4

• WIP island "generator", overwrite a user with a mostly well generated map 'seed system', you can also choose to use the 100% base save file
• Search and filter features in the texture tab
• Added mtp toggling to prevent crashes on emulator
• Parameter to change texture uploading resolution (for book and tv UGCs)
• Per user backup
• UI fixes, bug fixes and better emulator support

v1.3.3

• Fixed update checker
• Fixed .ltd* file support
• Better tomodachishare loading logic
• Updated for latest LTD update
• UI fixes

v1.3.2

• Better network loading spree
• AI-Translated new languages (send a pr if any translation is incorrect)
• New UI layout and sounds (revertable in the settings tab)
• Social tab rewritten
• Manual code optimization not ai

v1.3.1

• Removed the auto updater, it's a pain to maintain and because the app was added to the homebrew appstore it's more straight forward to update than before
• Added game assets icon for the item tab (only webui)
• New Credits button
• New Map tab
• New batch know relations buttons
• Bug fixes

v1.3.0

• Added multiple Language support, you can contribute with pull requests
• Added TomodachiShare Mii browser in the stats subtab (little export logo button)
• Added more bulk unlock features
• Added a straight forward Housing subtab to assign houses to Miis
• Items tab now straightforward on the app
• Bug fixes and qol features

v1.2.5

• Added MTP file sharing for people that don't want to enable Wifi
• Added color encoding settings
• Bug fixes

v1.2.4

• Importing now supports every ugc files
• Touch screen now works in the belonging and habits tab
• Updater fixed
• Bug fixes

v1.2.3

• Added U-2-Netp ai to remove background of ugcs easily
• Thumb is now written automatically
• Touch screen fixes
• New Habits tab
• QoL UI additions

v1.2.2

• Subtabs are now implemented in the WebUI
• Now shows a prompt when running applet mode because of the "Error - User not found" confusion
• Added ability to change encounter dates in the relation tab
• Backup now saves up to 8 saves by default so there's less chances of overwriting an incorrect backup
• Added a belongings tab
• New settings tab in the user menu
• ShareMii version v3.2.3 fixes implemented
• Better UI logic and bug fixes

v1.2.1

• UI and WebUI bug fixes, better logic and additions
• Added more editing features in mii stats and player tabs

v1.2.0

• Added save editing features for player file and miis
• QoL changes and bug fixes

v1.1.6

• Added touch screen support
• Added the ability to choose the export path
• Exporting now shows the path where it's importing

v1.1.5

• Added drag to import on webui
• Bug fixes from ShareMii v3.2.2
• Fixed crash when exiting app
• Now shows the actual name of the ugcs instead of the file name
• Fixed random hb menu crashing when closing the app
• Lots of UI logic enhancements

v1.1.4

• Fixed webui importing issue
• Added free file browsing
• Pictures now keep the current aspect ratio when importing
• UI enhancements

v1.1.3

• UI enhancements
• Fixed reddish color preview for the ugcs

v1.1.2

• Revamped the UI so On-Switch and WebUI aren't separated anymore
• Added a skip button while update's being checked
• QoL features
• Known issue: reddish color on preview but everything works ingame

v1.1.1

• Added an auto update feature, from github
• Added a QR code to the WebUI and the Wifi status
• Made the Mii tab phone compatible
• Miis load on computer correctly now
• Known issue: Reddish preview, still works perfectly ingame

v1.1.0

• Fixed semi transparent pixels and a weird outline appearing with certain pictures
• Added Mii Exporting and Importing as LTD thanks to the ShareMii project
• Added mikhak font locally
• Known issue: Reddish preview, still works perfectly ingame

v1.0.1

• Thumb files not listed anymore for ugcs
• Added a savefile backup feature and prompt
• Logs now go to "TomoToolNX" folder instead of "tomodachi-ugc"
• Made the UI cleaner
• Added ability to choose either webui or directly on switch
• QoL features

v1.0.0

• Initial Release
• Uses only WebUI atm
• Supports UGC importing
• Be careful and backup your files using jksv before using this, no backup feature yet

External links

• GitHub - https://github.com/miiazertyy/TomoToolNX
• Homebrew App Store - https://hb-app.store/switch/TomoToolNX