Ulearn vs 数学小练习

An all-in-one local media & file manager, centralize all your local videos, audio, documents, images and ZIP archives. Equipped with file transfer, privacy encryption, format converter and QR scanner to organize local files effortlessly. Core Features ● Local Video Player: Offline files only. Supports MP4, MOV, MKV, AVI, FLV, M2TS, M4V, TS, VOB, WMV, MPEG and more mainstream formats; ● Local Audio Player: Full format support including MP3, FLAC, APE, AAC, OGG, WAV, WMA for lossless local music playback; ● Document Viewer: Open PDF, Word, TXT, HTML, PPT, Numbers, Pages, Keynote office files; ● Privacy Protection: Fingerprint / gesture lock, file encryption & decryption for private data; ● Local image browsing & editing; ● Archive tools: ZIP compression; extraction supports ZIP, RAR, 7Z, TAR, TAR.GZ, TAR.BZ2, GZ, BZ2 (incl. password-protected archives); ● Multi-way file transfer: Wi-Fi LAN transfer, iTunes wired transfer, device-to-device sharing; ● Local audio & video format converter; ● QR & barcode scanner, QR code generator; ● Playback history, incognito local playback, custom skip intro/outro for media files; ● Markdown preview & editing support. All core features above are available for free users. Subscribe to unlock all premium perks, remove in-app ads and access batch encryption, incognito playback and other advanced tools. Auto-Renewable Membership Terms Auto-renew subscriptions: Monthly $0.99 / Month, Yearly $7.99 / Year Lifetime one-time purchase: $9.99. One single payment for permanent full premium access, no recurring charges. Subscription Rules Payment will be charged to your Apple Account upon purchase confirmation. Subscriptions auto-renew, and renewal fees will be charged 24 hours prior to the end of each billing cycle. To turn off auto-renewal, go to [Settings > Apple Account > Subscriptions] at least 24 hours before your current period expires. Your membership access remains active until the end of the paid billing cycle after cancellation. If you reinstall the app or switch devices, log in with your original purchase Apple ID and tap [Restore Purchase] to recover your membership at no extra cost. Support & Legal Links For billing issues, missing premium access or function errors, visit our official support page or email us: xiaodeve@163.com Terms of Use: https://xiaodev.com.cn/terms.html Privacy Policy: https://xiaodev.com.cn/privacy.html App Support Page: https://xiaodev.com.cn/support.html This app only processes locally stored files and provides offline media & file management functions solely. Report bugs or compatibility issues via email: xiaodeve@163.com.

数学小练习是一款数学启蒙工具，通过有趣的互动练习，帮助孩子培养数感、提高计算能力。 【六大练习模块】 ● 数独 — 4×4 / 6×6 / 9×9 三种难度，锻炼逻辑思维 ● 加法练习 — 100 以内加法，选择答案即时反馈 ● 减法练习 — 100 以内减法，结果不为负 ● 乘法练习 — 9×9 乘法表，夯实乘法基础 ● 除法练习 — 表内除法，逆向理解乘除关系 ● 质数练习 — 100 以内质数判断与识别，混合出题 【功能特色】 ● 每次练习计时，自动记录成绩 ● 历史最佳正确率、平均正确率统计 ● 按题量分类查看练习数据 ● 错题回顾，针对性改进 ● 界面简洁清爽，操作直观 让孩子在轻松练习中爱上数学！