Observed arrival · 2026-09-18
甲虫手帳: a field notebook for beetle breeders
A Japanese app for recording the care, breeding lines, feeding schedules, temperatures, inventory, and family trees of stag beetles and rhinoceros beetles.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Japanese beetle breeders managing many individuals
- Worth noticing
- It uses a breeder's own historical weights and adult lengths to estimate emergence size, rather than a fixed coefficient.
Field notes
The app models beetle care as a set of linked records: individual identity, parentage, life stage, feeding changes, photos, schedules, stock counts, and shelf conditions. Its lineage view reaches six generations, while batch operations handle groups such as newly extracted larvae or ten beetles sharing a replacement date. The homepage also specifies CSV export and device-to-device transfer, but says public release is still pending.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue