a goblin lives on your phone. keep your doom apps locked and he thrives. break your vow and he rots. simple. brutal. fair.
grubblin is a screen-time companion for iPhone. you pick your "doom apps", swear a daily vow of locked hours, and a pixel goblin lives or decays by whether you keep it. streaks evolve him; with grubblin plus, streaks hatch collectible creatures.
grant Screen Time access โ grub uses it only to shield the apps you choose.
swear the daily vow and lock the doom apps โ by tap or on a nightly schedule.
keep the vow โ he thrives, evolves, hatches eggs. break it โ he remembers.
the core game โ goblin, vows, locks, streaks, evolution โ is free.
grubblin plus unlocks the hatchery (mystery eggs, collectible creatures) and HD exports.
monthly subscription one-time lifetime unlock
prices are shown in the app and on the App Store. subscriptions renew automatically unless cancelled in your Apple account settings at least 24 hours before the period ends. purchases are handled entirely by Apple.
bug reports, feature requests, goblin fan mail โ all welcome.
check Settings โ Screen Time is enabled, and that grubblin still has Screen Time access (iPhone Settings โ Screen Time โ Apps with Screen Time Access). re-opening grubblin re-arms everything automatically.
tap the blocked app โ "give in". it always unlocks instantly. the goblin will be upset. that's the deal.
grubblin โ settings โ "already bought? restore". purchases live with your Apple ID, so deleting the app never loses them.
everything lives on your phone only โ deleting the app deletes all of it, instantly and completely. there is nothing on any server to ask us to remove.
effective 10 july 2026 ยท applies to grubblin for iOS
grubblin collects no data. none. no analytics, no tracking, no accounts, no ads, no third-party SDKs, no servers. everything the app knows stays on your phone.
all notifications are local, scheduled on your device. nothing is sent from a server.
payments are processed by Apple. grubblin only receives Apple's confirmation that a purchase exists โ never your payment details or identity.
grubblin does not knowingly collect data from anyone โ including children โ because it collects no data at all.
if this policy ever changes, the new version will appear on this page with a new effective date. since the app has no network connection to you, a policy change can never retroactively affect data โ there is none.