The specimen is already there, sealed in stone. A dig takes the rock off it course by course, and what you unearth stays in your Grotto.
A Screen Time companion for iPhone. No ads, no tracking, no account needed to use it.

The idle screen shows a sealed rock face with the species emblem cut into it. The stone behind it is whole from the first second, and the only thing your dig changes is how much rock is still in the way.
Pick a length and the apps to shut out. iOS enforces the block from that point on, not Crystalo.
Eight courses of stone leave the face as the timer runs, each after a tremor you can see. The specimen behind them never moves.
The last course leaves, the stone stands in the open, and it keeps the date, length and clarity of the dig that opened it.
Each species has its own colour, its own emblem cut into the rock and its own ore vein threading the face, so you know what is behind the stone long before you see it. You pick the species before the dig starts. What the dig decides is rarity.
Apple's Screen Time draws the shield, so force quitting Crystalo lifts nothing. The picker also hands the app opaque tokens, so it never learns which apps you chose.
Deep Focus has no stop button. Quitting means holding a gesture through a warning, and the specimen cracks on screen instead of quietly disappearing.
Everything you unearth stands in the same grotto wall. Nothing expires, nothing has to be checked daily to stay yours.
The dig is the core, but the day around it matters too. Everything below is built and running in the app today.
25, 50 or 90 minutes, or a Pomodoro chain whose work and rest cycles fold into one specimen. Three difficulties, and Deep Focus cracks the stone if you walk away.
Shield apps, categories and websites for the dig, or set recurring schedules and daily time limits that run whether Crystalo is open or not. While a dig runs, the app cannot be deleted to escape it.
Abandon a dig after a minute and it still goes in the log as an abandoned one. Streaks and milestones only count finished digs, so the numbers stay worth something.
Thirteen programs on four breathing patterns (Box, Coherent, 4‑7‑8, Energize), plus three multi‑day journeys: 7 Days to Deep Focus, 10 Days to Calmer Evenings, 5 Days to Steadier Breath.
Five soundscapes and six music beds are synthesized on the device, so no two digs sound quite alike. Prefer your own? Play an Apple Music playlist instead.
One number from 0 to 100, weighing what you finished, how clean it was, how long you went and how consistent you have been. A weekly report and a 30‑day trend sit behind it.
A day streak that doesn’t punish a life. Dig regularly and you bank grace days, so a single missed day bridges instead of resetting you to zero.
Amethyst is free; the rest arrive with Pro or as a milestone reward. Length, clarity and luck set the rarity of what you unearth, and a rare roll drops a Nebula instead of the species you chose.
Browse the Grotto as a grid, or as the Living Cave: one cave wall built from everything you have unearthed. Any specimen turns in 3D and shares as a card.
Widgets and a Live Activity carry the dig minute by minute while the phone is away. Start one from Control Center or by asking Siri. The Watch app runs its own digs and breathing, though blocking stays on the phone.
Finished breathing is written as Mindful Minutes, and last night’s sleep shows up next to your focus so the picture is whole.
iPhone, iPad and Mac stay in step through your own private iCloud, with no Crystalo login involved. Signing in is optional and buys exactly two things: teams and invites.
Optional sign-inCreate or join a team with a code and see a leaderboard for that team alone. Your invite code pays 14 days of Pro to whoever redeems it and 14 days to you, for up to ten people.
The idle screen mounts no animation at all, and long digs are pinned to 30 fps. Battery Saver trades motion for a cooler phone, and Stealth strips the screen to near‑black when you want nothing at all.
Not to use it. Digs, specimens and settings live on the device and sync between your iPhone, iPad and Mac through your own private iCloud, which needs no Crystalo login. Signing in with Apple, Google or an email link is optional, and it exists for two features: teams and invite rewards. You can delete that account from inside the app.
No. The app picker is drawn by iOS in a separate process and hands back opaque tokens rather than names or bundle identifiers. Crystalo can count how many things you blocked and compare one token to another, but it cannot read what they are. How that works in detail.
In Deep Focus there is no visible stop button. Quitting means holding a gesture for three seconds past a warning, and then the specimen cracks on screen and the attempt is logged as an abandoned dig. In the other two difficulties nothing breaks, but any dig you drop after a minute is still written down.
No. Screen Time blocking is an iPhone and iPad framework, so the Mac build carries the collection, statistics and iCloud sync while blocking nothing at all. The Watch app runs its own digs and breathing programs on the wrist, also without blocking. Shields only exist where iOS can enforce them.
Blocking, digs, schedules, limits, the statistics and the Grotto work without paying. Amethyst is the free species. Pro opens the other eleven, plus the Pro meditation programs, and there is one paywall shown automatically, right after the first specimen you unearth. Invite codes pay Pro days to both sides.
Leave your email and we write once, on the day Crystalo reaches the App Store.
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