Wallrap

工具程式

免費 · 專為 iPad 設計。尚未針對 macOS 驗證。

Wallrap is an acoustic stud finder. It teaches your iPhone the carpenter's knock test — rap the wall, listen for the pitch shift, know whether you're tapping over a hollow drywall cavity or a solid stud underneath. THE TECHNIQUE Walls over a stud sound brighter and shorter. Walls over a hollow cavity sound lower and longer — like a small drum. A trained ear can hear it instantly. Wallrap measures it for you. HOW IT WORKS Wallrap listens through your iPhone's microphone, detects each knock by its amplitude envelope, takes a 50 ms FFT snapshot of the sound, and computes two features that separate hollow from solid: the spectral centroid (where the energy is) and the low-band-energy ratio (50–500 Hz vs everything up to 4 kHz). The classifier maps each knock onto a hollow → solid axis and reports HOLLOW, EDGE, or SOLID with a soft confidence ring. CALIBRATION Different walls (drywall, plaster, paneling, tile) ring differently. Calibrate once per wall: tap a place you know is hollow drywall, then tap a place you know is a stud or door frame. Wallrap learns your reference and uses it for every later knock. Recalibration takes about 15 seconds and is stored locally on your device. TAP-AND-TRACE MODE Hold your phone vertically and slide it slowly across the wall, knocking every couple of inches. Wallrap records the sequence and draws a horizontal strip showing the inferred stud locations — amber bands for solid, slate bands for hollow, purple bands for the edges where it's not sure. WHAT WALLRAP DOES NOT DO Wallrap is an estimate, not a precision instrument. It will not find every stud in your wall with sub-centimeter accuracy. It can be fooled by noisy environments, inconsistent knocking, very thick walls, plaster-on-lath, and metal studs. Confirm with a drill pilot hole or a hardware stud finder before driving large fasteners. PRIVATE BY DESIGN - No accounts, no ads, no analytics, no tracking, no subscription - Audio is processed live on device and never recorded or uploaded - Your calibration profile is stored on this device in UserDefaults - Microphone permission is requested only when you tap Listen, Trace, or Calibrate; you can revoke it at any time in Settings → Privacy ACCESSIBILITY - VoiceOver labels on every interactive control - Dynamic Type-friendly typography (system SF Pro rounded) - Variable-intensity Core Haptics on every classified knock (stronger and crisper for solid, softer for hollow) - Dark mode primary; cool slate base with warm amber accent REQUIREMENTS - iOS 17 or later - iPhone or iPad with a working microphone - $0.99 one-time purchase, no in-app purchases Wallrap is a single-purpose utility for the DIYer who'd rather knock once than guess. Calibrate, listen, knock, build.

評分與評論

  • 此 App 尚未收到足夠的評分或評論，無法顯示概覽。

開發者Robert Corbin指出App的隱私權實務可能包含下方描述的資料處理。如需更多資訊，請參閱 開發者的隱私權政策 。

  • 不收集資料

    開發者不會從這個 App 收集任何資料。

    依據你使用的功能或你的年齡等因素，隱私權實務可能有所不同。 更多內容

    輔助使用

    開發者尚未表示此 App 支援的輔助使用功能。 進一步瞭解

    資訊

    供應商
    • Robert Corbin
    大小
    • 3.6 MB
    類別
    • 工具程式
    相容性
    需要 iOS 17.0 或以上版本。
    • iPhone
      需要 iOS 17.0 或以上版本。
    • iPad
      需要 iPadOS 17.0 或以上版本。
    • Mac
      需要 macOS 14.0（或以上版本）以及配備 Apple M1（或以上版本）晶片的 Mac。
    • Apple Vision
      需要 visionOS 1.0 或以上版本。
    語言
    • 英文
    年齡分級
    4+
    版權
    • © 2026 Robert Corbin
  • 開發者網站
  • 隱私權政策

    • 更多Robert Corbin的作品