🌐 This site supports Yostar's EN, JP, and KR servers. Click here for TW Server or CN Server (External).

✨ Android users can install our Exclusive APP, and PC users can install the Browser Extension for one-click record extraction.

For first time use, you must fetch or upload records. Here are instructions for Method 1 (Web Fetch): (Browser DevTools required)
Please login to JP Official Site, EN Official Site or KR Official Site, use F12 DevTools, then under "Application" -> "Cookie", find the values of "YSSID" and "YSSID.sig" and fill them in.

This website will NOT keep your cookies. It's only used as a temporary credential to fetch gacha records from official servers. The credential is destroyed immediately after use and never stored persistently. To avoid any risks, we recommend logging out of the official website after fetching.

This site is a custom-built Gacha record export, analysis and visual statistics tool for Arknights EN, JP, KR server players. You can fetch your gacha history from the official site or import past records.

Main features include:
• Statistical Analysis: Automatically calculates pity pulls for each pool (Standard, Kernel, Limited), average 6-star rates, and provides colorful distribution charts.
• Data Management: You can import, export, backup, overwrite, or clear your data anytime in JSON format.
• Cross-Platform Support: Update and view your data via various login methods.

1: This site does not guarantee data accuracy or completeness. We do not guarantee data retention and may clear arbitrary records anytime. Please export your records after checking. To delete, use Method 3 to upload a blank JSON file.

2: Note that due to Method 2, anyone can access your records here using your UID. Delete your records timely if concerned.

3: Note that due to Method 3, anyone can overwrite or delete your records here using your UID. Please export timely.

4: To merge past records, use Method 3 to upload your past visit_logs.json first, logout, then use Method 1. Method 2 can be used to check if past records exist.

1: This project is not affiliated with, endorsed by, or authorized by the game's developers or publishers (including but not limited to Hypergryph, Longcheng, Ariel, Yostar, or Studio Montagne).

2: Use at your own risk. The author guarantees no protection against data leaks or damages.

3: This site is strictly for personal and academic use. Commercial use is prohibited.

4: All in-game assets and designs belong to their respective copyright holders.