Ex Astris Save Editor

Unofficial Android save editor for Ex Astris. Edit your inventory, keep verified backups of your save, and switch Hime and MsBlack to their Arknights collaboration skins.

Features

• Direct save access with Root or Shizuku. The save is found automatically. Without either, pick the file manually.
• Inventory editing. Change quantities, delete items, or add new ones from a searchable catalog of 160 items with the game's own icons.
• Bulk Set / Add / Subtract for many items at once. Unique and quest items are protected and never changed in bulk.
• Safe writes. A verified backup is made before every save, corrupt files are refused, and the result is checked after writing.
• Undo and unsaved-change warnings, so nothing is lost or written by accident.
• Arknights skins for Hime and MsBlack, switched on and off independently (Root or Shizuku). The editor patches the game's own files on your phone and does not include any game files.
• English and Russian interface and item descriptions.

Screenshots

Items	Skins

Arknights skins in game (standard party, then Arknights party, hub and battle):

Download

Download the APK from the latest release. Requires Android 8.0 or newer.

How to use

1. Fully close Ex Astris.
2. Open the editor and choose an access mode in Settings → Access: Auto, Root, Shizuku or File.
3. On the Save tab, open SaveFile0.save.
4. Edit items on the Items tab, then tap Save.
5. Start the game and check the result.

Switching skins: close the game, open the Skins tab and tap Enable or Disable for Hime or MsBlack. The change takes effect after the game restarts.

The save is usually located at:

/storage/emulated/0/Android/data/com.gryphline.exastris.gp/files/<profile-id>/Save/SaveFile0.save

Safety

• Always close the game before saving or switching skins.
• Backups can be restored from the Save tab (Restore backup).
• The editor only works inside the Ex Astris data folder and refuses unknown or damaged files instead of guessing.
• A game update may undo the skin change. If that happens, switch it on again.

Building

GitHub Actions builds every push to main: it runs the tests and produces a debug APK. Tags v<version> produce signed releases. To build locally you need JDK 17 and Android SDK 34:

gradle testDebugUnitTest assembleDebug

Documentation

• SETUP.md: Termux workflow and CI artifacts
• TESTING.md: test and release checklist
• RELEASE.md: signing and publishing releases
• CHANGELOG.md: version history
• docs/CATALOG.md: item catalog, data sources and bulk-edit safety
• docs/PATCH_METHOD_HIME_MSBLACK.md: how the skin files are modified, verified and what is still open (in Russian)

Disclaimer

This is an unofficial fan-made tool. It is not affiliated with or endorsed by GRYPHLINE, Hypergryph or the developers of Ex Astris. Editing saves is at your own risk. Keep backups.

License

Copyright (C) 2026 Exa Save Editor contributors.

The source code is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License version 3 as published by the Free Software Foundation. It is distributed without any warranty; see the license for details. Modified versions that are distributed must also be released under GPL-3.0 with their source code.

Releases up to and including v1.8.1 were published under the MIT License.

The item icons (app/src/main/res/drawable-nodpi/item_*.png) were extracted from Ex Astris, and item names and descriptions in items.json are partly based on the game's text. Ex Astris, its characters, artwork and text are the property of GRYPHLINE and their respective owners. They are not covered by the GPL and are used only to identify items in this fan-made tool. Arknights is a trademark of Hypergryph.

Ex Astris Save Editor v1.8.1

Changes

• The header card on the Items tab now shows Find save once Root or Shizuku is connected, and Switch when a game save is open. Previously the button disappeared after connecting, and the save could only be found from the Save tab.
• The README now states that the MIT License covers the source code only. Item icons and game-derived item texts belong to their owners.

Everything from v1.8.0 is unchanged. The Arknights skins for Hime and MsBlack are still patched on your phone, and the app contains no game files.

Checked on a device

• Connect / Find save / Switch in the header card, with both Root and Shizuku.
• Arknights skins on and off, in the world, menus, hub scenes and battle.
• Saving item changes (the game shows the edited quantities).

Screenshots

Updating

v1.8.1 is signed with the same release key and installs over v1.8.0 as a normal update.

Release metadata

Version: 1.8.1
Version code: 26
Catalog entries: 160
Item icons: 160
Build variant: release