Swift Pieces Pro: The pieces to build the whole app

Install, rebrand and theme Stillwater, the Meditation App template. Version 1.0.0.

Stillwater, a calm wellbeing app: a complete Xcode project with mood check-ins, guided breathing, short courses, a journal, widgets and three brand presets. This guide takes you from download to a running, renamed app. It covers version 1.0.0. See the screens on its library page.

Requirements

Xcode 26 and an iOS 17.0 or later deployment target
Tuist 4 (brew install tuist)
An Apple Developer team for devices, App Groups and Sign in with Apple. The simulator runs without one.

Install

Download

Included with Swift Pieces Pro. Not signed in? The button takes you to sign in or create an account, then starts the download when you're back. Unzip the archive; it contains one folder, Stillwater/.

Make it yours

cd Stillwater
scripts/setup.sh --name YourApp --bundle-id com.you.yourapp --preset stillwater-editorial

The script rewrites the project configuration, renames the paywall product ids, renders the app icon in the chosen preset and runs tuist generate.

Run it

Open YourApp.xcworkspace, choose an iPhone simulator and run the YourApp scheme. The first launch loads sample data so every screen has content.

Rebrand options

Option	What it sets
`--name`	Target, scheme and product name. Letters and digits.
`--bundle-id`	The bundle id. The widget, modules, tests and the App Group derive theirs from it.
`--display-name`	The name under the icon. Copy that mentions the app reads it at runtime.
`--team`	Your Apple Developer team id.
`--preset`	The starting brand preset. Also re-renders the app icon.
`--product-prefix`	App Store Connect product id prefix. Defaults to the bundle id plus `.pro`.

The values live in Tuist/ProjectDescriptionHelpers/AppConfig.swift if you prefer to edit them by hand.

Theming

Stillwater reads every color, type size, radius and animation from @Environment(\.spTheme). Its three presets are three different scheme families, so switching changes the whole look: ground, surfaces, color blocks, type and shape. People switch presets and appearance in Settings > Theme, and the widget follows.

Preset	Id	Look	Type
Ember	`stillwater-ember`	Burnt night, persimmon light, warm scenery.	DM Sans
Editorial	`stillwater-editorial`	Serif headlines over scenery, ink and paper.	New York
Candy	`stillwater-candy`	Cream, bright friendly blocks, rounded bold type.	DM Sans

Blocks: theme.color.tiles holds each family's solid block colors with the ink that reads on them. Use them for categories, charts and highlights, and keep the accent for the primary action.
Numbers and display type: theme.type.numeral(64) and theme.type.display(40) set any size in the family's style, scaling with Dynamic Type.
Backdrop: SPBrandBackdrop draws the family's motif (contours, scenery, shapes, blobs or rings) behind hero surfaces.
Liquid Glass: .spGlass uses glass on iOS 26, Material on iOS 17 and 18, and an opaque surface under Reduce Transparency.

To build your own brand, start from the preset closest to it in BrandPresets.swift, copy it, and change its colors; every role and block pairing should keep 4.5:1 contrast. For a quick start from hues, SPBrandConfiguration.custom(...) builds an accessible palette from three OKLCH hues.

Purchases and accounts

PurchaseStore handles StoreKit 2: products, purchase, restore and transaction updates. The scheme runs with Configuration/Products.storekit, so purchases work in the simulator before App Store Connect is set up.
Create the products in App Store Connect with the ids in the project's catalog (the product prefix plus .yearly and .monthly).
AccountStore signs in with Apple and keeps the account in the Keychain. People can also continue without an account.
Data lives in SwiftData inside the App Group, so the widget reads the same store. Replace the sample data by conforming your own type to the repository protocol.

Launch arguments

Debug builds accept these arguments for demos and screenshots. Release builds ignore them.

Argument	Effect
`-SPMockStore`	Local purchases with the same plans
`-SPMockAccount`	A signed-in sample account
`-SPSkipOnboarding`	Open on the home screen
`-SPResetOnboarding`	Run first launch again
`-SPResetData`	Reseed the sample data
`-SPTab` followed by a tab id	Open a tab
`-SPPresent paywall`	Present the paywall
`-SPPreset stillwater-editorial`	Start with a preset
`-SPAppearance dark`	Force light or dark

Changelog

1.0.0

2026-09-17

Tuist project with feature modules (Onboarding, Today, Breathe, Learn, Journal, Settings) on a shared DesignSystem.
One-command setup: name, bundle id, team, product ids, brand preset and app icon.
Brand presets Ember, Editorial and Candy with DM Sans and New York display type, switchable in Settings.
Daily mood check-in with the mood orb, five mood faces, feelings and notes.
Six guided breathing patterns with a session player, phase haptics and a completion summary.
Four short courses with a reader, read-aloud and progress.
Journal with face-capped mood bars, insights and a designed empty state.
StoreKit 2 paywall for Stillwater Plus with a .storekit configuration and a mock store for demos.
Sign in with Apple with Keychain storage and revocation checks, or continue without an account.
SwiftData persistence in an App Group, with sample history and a repository protocol.
Home and Lock Screen widgets: a mood streak with interactive check-in buttons, and Start breathing.
A daily reminder, toasts with Undo, CSV export and deep links.
Light and dark mode, Dynamic Type through the accessibility sizes, VoiceOver labels, Reduce Motion and Reduce Transparency.
String catalog, unit tests and a first-run UI test.

Stillwater Template