SQNZ
Interval timer for iPhone, iPad and Apple Watch.
You set work and rest, the app counts down for you. For HIIT, circuits and boxing rounds. No account. Timers run without an internet connection.
For iPhone 11 or later and iPhone SE (2nd generation) or later. For iPad (8th generation) or later, iPad mini (5th generation) or later, iPad Air (3rd generation) or later and every iPad Pro from 2018 on. On Apple Watch from Series 6, SE (2nd generation) and every Ultra, together with SQNZ Premium on your iPhone. · FAQ
Support
We're happy to help.
Contact
Have a question, found a bug, or want to suggest a feature?
support@casystudio.comIn the app, the quickest way is Settings › Help › Report a problem. SQNZ prepares the email without device details, and you see everything before you send it.
Questions about privacy, access to your data or deletion? We handle those separately — see the Privacy Policy. Write to the same address with “Privacy” in the subject line.
FAQ
How do I create a timer?
Tap “+ New” on the Home tab. Pick a template, build your own with “Timer Builder”, use “Create from text”, or chain timers under “Flow”.
How does the AI help work?
SQNZ copies a request with your description to the clipboard. Tap ChatGPT or Claude and that AI app opens directly; with “Copy” you can use any other AI app. Paste the answer into SQNZ, which turns it into a timer on your device and shows a preview before you save. The app itself sends no text to any AI service.
How do I sync with my Apple Watch?
The Apple Watch app requires Premium. Pair your watch with your iPhone as usual and install SQNZ on the watch. SQNZ syncs timers, favorites and statistics through Apple's connection between iPhone and watch, without any server of ours. Flows run on iPhone and iPad, not on the watch.
Does the timer pause automatically on a call?
Yes. When a call comes in, a running timer pauses on iPhone, iPad and Apple Watch.
How do I share a timer or flow?
Open the timer or flow and tap Share. It goes out as a file (.sqtimer or .sqflow). The other person taps the file, taps the share icon at the top and chooses SQNZ.
How do I restore my purchase?
Open Settings and tap “Restore purchases” on the Premium card at the top. Use the same Apple Account you used for the original purchase.
Is Premium a subscription?
Premium is a one-time purchase, not a subscription. There is nothing to cancel. You manage purchases through your Apple Account.
How do I delete my data?
Under Settings > My Data you delete timers, flows and your workout history; the bundled templates are restored. So you can undo it, SQNZ keeps the last three states as a copy on the device. With “Reset everything” you delete timers, flows, history, settings and these copies at once, with no undo. If you delete the app, iOS deletes its data. Two keychain entries on this device remain (Premium unlocked, acknowledgement of the hearing notice), as does everything SQNZ wrote to Apple Health, which you delete in Apple Health or under Settings > Apple Health with “Delete all sessions saved by SQNZ”.
Does SQNZ need an internet connection?
No, timers run without an internet connection. SQNZ itself sends no data to any server. You only need internet to buy Premium through Apple and to create a timer with your AI app, for example ChatGPT or Claude.
What is different on iPad?
SQNZ runs on iPad with its own layout. The timers, flows, voice and statistics are the same as on iPhone. iPad has no vibration, and the Apple Watch app works only together with an iPhone.
Is anything missing on older devices?
Almost nothing. Double tap is available from Apple Watch Series 9, Ultra 2 and SE 3, and the Dynamic Island only on iPhones that have one.
How are AI voice announcements marked?
Every announcement SQNZ generates with the optional AI voice is a WAV file that carries a standard RIFF LIST/INFO chunk (marking version 1). ICMT: “AI-generated synthetic speech (EU AI Act Art. 50(2) marking). Model: Supertonic 3 (Supertone Inc.), Core ML int8 conversion by FluidInference (rev 9f3606bf). Generated on-device by SQNZ <version>.” ISFT: “SQNZ/<version> supertonic3-coreml”. A JSON file next to each WAV repeats this as fields: aiGenerated, model, modelRevision, markingVersion. Any tool that reads WAV metadata shows the marking, for example Apple's Core Audio, exiftool (Comment, Software) or ffprobe (comment, encoder). The files stay inside the app on your device; SQNZ never exports, shares or transmits them.
Six short sample clips ship inside the app; they were made by us with the same model and carry the same marking, with a comment saying they were not generated on your device.