Tickbag

できること

項目・カテゴリ(何件でも)・型紙の作成と編集・チェックとリセット・複製・ファイルへのバックアップ・テーマ	無料(型紙 3 つ・旅行 2 つまで)
型紙と旅行の追加・印刷 / PDF・Google ドライブへの自動バックアップ	Pro 版(1 回の購入・サブスクなし・広告なし)

無料のままでも、リストはいつでも見る・直す・書き出すことができます。

Keep templates such as "Business trip" or "Beach, 3 nights", and make a checklist from one for each trip
No save button. Changes are saved right away, and deleted things come back with "Undo"
Rows stay put when you check them (or choose to move packed items down)
Duplicate a past trip, save a trip as a template, or add a trip-only item back to its template
Start the return check with one button that clears all checks
Filter by person, and print / PDF (Pro)
No account, no location, no destination or dates to enter. Your lists stay on your phone

Items and categories (any number), creating and editing templates, checking and reset, duplicating, backup to a file, themes	Free (up to 3 templates and 2 trips)
More templates and trips, print / PDF, automatic Google Drive backup	Pro (one purchase, no subscription, no ads)

Even in the free version, you can always view, edit and export your lists.

Tickbag lists packing suggestions. It does not cover travel documents or rules on what you may carry.