
SpareCheck
Spare phone local checks
0 ratings
Free
In-App Purchases
About
SpareCheck helps you reuse a spare iPhone as a local monitor for quick visual checks from your everyday phone.
Set one device as Monitor, set another as Controller, scan the pairing code, and start a local check when you need it. The monitor phone can stay in a dark standby mode, show a minimal status dot or clock, and save local manual or motion-triggered clips on the monitor device.
Key features:
- Spare-phone monitor and everyday-phone controller modes
- QR pairing with stable monitor identity for reconnecting
- Live local check with battery, signal, speed, resolution, latency, and loss status
- Flip camera, flashlight, mute, record, picture-in-picture, and hold-to-talk controls
- Motion-triggered local clips with 10, 15, or 30 second recording options
- Local monitor storage warnings and 30-day motion clip pruning
- First monitor included for free, with Plus for additional monitors and advanced controls
SpareCheck is designed for local convenience checks. It is not an emergency service, professional security system, certified baby monitor, medical device, or guaranteed availability service.
Subscription information:
SpareCheck Plus is optional. Payment is charged to your Apple ID at purchase confirmation. Auto-renewable subscriptions renew unless canceled at least 24 hours before the end of the current period. You can manage or cancel subscriptions in App Store account settings. Features and prices shown in the app may vary by region.
Terms of Service: https://howiehong.github.io/Spare-Phone-Monitor/terms/
Privacy Policy: https://howiehong.github.io/Spare-Phone-Monitor/privacy/
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What's New in SpareCheck
1.0.2
July 15, 2026
Fixed push-to-talk audio playback so remote voice is clearer and no longer turns into burst/static noise. Increased remote audio volume for easier voice recognition from the monitor device. Improved connection stability and adaptive streaming behavior for two-device testing.
MoreSubscription plans
SpareCheck Monthly
Add extra spare-phone monitors and local controls.
$4.991 Month
1
In-App Purchases
$79.99
SpareCheck Lifetime
One-time access for extra local monitors.
