A little thought.
A whole universe.
Some thoughts arrive quietly.
Give them a place to stay.
enough to begin.
Less organising.
More being.
An idea on a walk. A sentence you don’t want to lose. Something to remember when the time is right. Spark starts with a single thought.
What if the best ideas
need a little room?
Open a book before
opening another tab.
Take a walk
after lunch tomorrow.
Sample thoughts, for illustration.
Your thoughts.
Your little corner.
Your library is kept on your iPhone. No public feed. No advertising. No account to create. Voice can use cloud transcription, and subscriptions use Apple and RevenueCat—we explain that in plain language.
Read the Privacy PolicyA few things to know.
When can I download Spark?
Spark is being prepared for release on the iPhone. It is not yet publicly available on the App Store. This website introduces the app as it is being built.
What can I do with a thought?
Write it or dictate it. Keep it in your personal space, find it with local text search, edit it, share it, or archive it. Spark can bring thoughts back through reminders and resurfacing notifications, with your permission.
Does everything stay on my iPhone?
Your thought library stays on your iPhone by default, with optional private iCloud sync for Spark Pro. Voice tries on-device transcription first and sends audio to OpenAI only after you allow cloud transcription. Apple and RevenueCat process subscription information. The Privacy Policy explains these boundaries.
Does Spark sync my thoughts across devices?
With active Spark Pro, you can enable Sync with iCloud in Spark Settings. It syncs your library through your private Apple iCloud account. Sync is optional, pauses when Pro expires or you turn it off, and keeps existing thoughts on your iPhone. Your iPhone’s backup settings may also include app data.
What is Spark Pro?
Spark Pro is an optional subscription that supports Spark’s continued development. Free includes 100 active thoughts; archiving makes room. Pro adds unlimited thoughts, rediscovery, and optional iCloud sync. Existing thoughts remain accessible if Pro expires. The app shows local prices and eligible trials before you confirm a purchase with Apple.