Secret Vault·Private Locker vs DevStudio

A local file encryption and privacy manager for your iPhone. App lock, file encryption and hidden space in one place. Plays, extracts and transfers nearly every format — no conversion. 【Triple Lock, Total Privacy】 • App Lock: Gesture / Fingerprint / Face ID on launch • File Encryption: Keep important files locked away • Hidden Space: Keep private photos & videos out of sight 【Play Everything, Stay Organized】 • All formats: video, audio, docs, archives — no conversion • Speed & background playback • Markdown / EPUB: private notes & reading, no traces • Archives: extract ZIP / RAR / 7Z / TAR / GZ / BZ2, password-protected included • Lyrics: match lyrics online for your music, view while playing, edit & export • Text editor: open TXT / LRC / LOG and more, with search & highlight • Video (50 formats): MP4 / MKV / AVI / RMVB / WMV / FLV / MOV / TS / M2TS / VOB / WEBM / SWF / WTV / MXF… 4K & legacy tapes • Audio (56 formats): MP3 / FLAC / APE / WAV / AAC / OPUS / DTS / AC3 / CUE / MIDI / TAK / WV… lossless & surround • Subtitles (23): SRT / ASS / SSA / VTT / IDX / TTML — loaded instantly • Documents (24): PDF / DOCX / XLSX / PPTX / MD / EPUB / Keynote / Numbers / CSV • Images (12): HEIC / JPG / PNG / GIF / WEBP / TIFF / BMP 【5 Ways to Transfer, No Cable Needed】 • WiFi Transfer: enter the IP in a browser, drag & drop • FTP / SMB: connect to LAN servers directly • Device-to-Device: fast nearby transfer • Album Import: save photos & videos privately • iTunes File Sharing: bulk import via cable 【Web Search, All in One】 • "Web Search" entry on the home screen — built-in browser, one tap away • Multiple search engines and direct URL access • Site navigation and bookmarks for faster browsing 【Nice Details】 • Trash: recover accidentally deleted files • Star marks: find what matters fast • Format conversion: one tap for docs & images === What Users Say === "Encryption plus hiding — this app keeps everything private." "WiFi transfer is blazing fast, hundreds of MB in seconds." "Plays almost any format without converting." 【Auto-Renewable Subscription】 1. Service: Premium Membership Auto-renewal 2. Price: $0.99/Quarter, $3.99/Year; lifetime $4.99 as a one-time purchase. 3. Your iTunes account will be charged within 24 hours before each renewal. 4. Cancel anytime: Settings → Apple ID → Subscriptions → select this membership. Auto-renews unless cancelled at least 24 hours before expiry. 5. Terms of Use: https://xiaodev.com.cn/terms.html 6. Privacy Policy: https://xiaodev.com.cn/privacy.html Contact: xiaodeve@163.com Your privacy, guarded with care.

数字化协同办公软件，支持与iPhone、Mac等多端用户进行实时沟通交流。提供文字、语音、音视频和会议等多种沟通方式