Math Drills Mental Arithmetic vs Shadow101

Build faster mental math skills with quick daily drills. Math Drills covers addition, subtraction, multiplication, and division with grade-friendly practice sets—no account required. Review mistakes in the wrong book, track practice history, unlock achievements, and create custom problem sets for homework or exam prep. Clear stats help students and parents see progress over time. Offline-first by design: your practice data stays on your device, with no login, no tracking, and no ads.

Build a stronger English speaking habit with focused shadowing practice — using the English audio you choose. Shadow101 turns your own audio into structured, sentence-by-sentence shadowing lessons. Import MP3, M4A, or WAV files, review the transcript, fine-tune sentence timing, then listen, repeat, record, and compare at your own pace. ◉ CREATE LESSONS FROM YOUR AUDIO • Import MP3, M4A, or WAV files • Automatic transcription and sentence splitting • Synchronized sentence-by-sentence practice timelines • Review and edit transcripts before saving • Fine-tune sentence start and end times • Preview each sentence before you begin • Choose Automatic, UK English, or US English recognition ◉ PRACTICE YOUR WAY • Listen sentence by sentence • Repeat any sentence or complete lesson • Adjust playback speed • Move quickly between previous and next sentences • Switch between English and bilingual text when available ◉ RECORD AND COMPARE Record your own reading for any sentence, then listen to the lesson audio and your recording side by side. Each sentence keeps your latest recording so you can practise again whenever you are ready. ◉ FOLLOW YOUR PROGRESS • See how many times you complete each lesson • Review daily activity in the study calendar • Track weekly trends and learning streaks • View your most-practised lessons • Set a daily reminder to keep your routine going ◉ MORE STUDY TOOLS • Built-in vocabulary reference • Rename and manage imported lessons • Share lesson audio and text • English, Simplified Chinese, and Traditional Chinese interface options • Offline-friendly practice with locally stored audio Shadow101 is designed for focused, distraction-free English practice — one sentence, one lesson, and one day at a time.