Altitude Compass vs 清灰

Altitude Compass is a focused, ad-free compass and altimeter for hiking, camping, and travel records. Core compass and altitude features are free, while Full Version adds a watermark camera for iPhone and iPad and more personalization. Free core features • View heading, altitude, barometric pressure, coordinates, and nearby addresses • Switch the altitude source between GPS information and the device altimeter when supported • Check level, speed, sunrise, and sunset information • Choose from multiple compass dials, altitude display themes, light or dark appearance, fonts, and units • View altitude with Home Screen, Lock Screen, and StandBy widgets Full Version Choose Full Version when you want to record outdoor photos or further personalize Altitude Display: • High-quality watermark camera for iPhone and iPad: capture directly with the device camera and apply watermarks to high-resolution camera output rather than a screen or viewfinder capture • Photo information preservation: retain capture time, orientation, location, and other photo information whenever possible for continued recognition and organization in Photos and other apps • Custom watermark content: record altitude, pressure, coordinates, address, direction, time, and notes, with control over each field's visibility and order • HDR watermarked photos: supported iPhones can preserve richer highlight and shadow detail, with an option to save a more widely compatible JPEG instead • Custom background colors for Altitude Display You can try Full Version free for 3 days. The trial does not renew or charge automatically. A one-time in-app purchase permanently unlocks Full Version. There are no subscriptions. Customers who previously purchased the paid app automatically keep Full Version access and do not need to purchase it again. Network and privacy Core features such as heading, sensor altitude, and barometric pressure generally work offline. Nearby addresses, maps, in-app purchases, and purchase restoration require a network connection. The app contains no ads and does not collect personal data. Permissions • Location: GPS altitude, coordinates, speed, sunrise and sunset, maps, and addresses • Motion & Fitness: pressure and altimeter readings on supported devices • Camera and Photos: only when capturing and saving watermarked photos. Photo access is add-only; the app does not read your photo library. Device capabilities and readings may vary with hardware, system version, environment, and location signal. HDR watermarked photos require iPhone 12 or later with iOS 17 or later. The watermark camera is available on camera-equipped iPhones and iPads, with HDR features offered according to device capabilities.

一款面向手机扬声器、听筒与外放场景的离线清灰工具。应用通过连续声波与频率变化，帮助你在日常使用中进行喇叭除尘、积尘清洁与排尘辅助。无账号、无联网、无复杂步骤，打开即可开始。 核心功能 • 声波清灰：提供稳定的音波输出，帮助进行日常扬声器清理灰尘。 • 双模式切换：标准模式适合常规清洁，深度模式适合需要更强震动感的场景。 • 时长预设：支持自由时长、30秒、60秒、90秒，按需选择更方便。 • 历史记录：自动保存每次清灰结果，方便查看累计次数、平均时长与今日完成情况。 • 桌面小组件：快速查看今日清灰状态和最近一次记录。 • 纯离线体验：无需注册登录，无联网使用，操作更直接。 适合这些使用场景： • 手机喇叭积尘后的日常清洁 • 听筒、外放声音发闷时的辅助清灰 • 需要快速开启音频震动清洁时 • 希望使用本地工具完成清灰时 为什么选择我呢？ 清灰专注于声波清理灰尘场景，不做复杂功能堆砌。你可以在手机上快速完成扬声器除尘、听筒清洁、外放排尘，并通过历史记录持续观察使用效果。对于关注隐私和效率的用户，离线、本地、轻操作会更省心。 使用建议： 将设备音量调到合适范围后再开始清灰，完成后可立即试听效果。应用适合日常清洁辅助，不替代硬件维修。