ParaGraph3D vs proLingo+

ParaGraph3D is a fast and visual graphing tool for exploring mathematical functions and parametric surfaces in three dimensions. Enter your equations, generate a surface instantly, and explore it from different angles. Rotate, zoom, pan, and tap to inspect 3D mathematical structures interactively. Key features: z = f(x,y) surface plotting x(t,s), y(t,s), z(t,s) parametric surfaces 44 built-in mathematical surfaces Isometric, front, side, and top views Perspective and orthographic cameras Surface, wireframe, and surface + grid modes Multiple color palettes Prism color gradient Adjustable mesh quality and opacity X, Y, and Z axes Tap-to-inspect coordinates Parameter sliders and animation Save and reuse graphs JSON import and export PNG image export Turkish and English language support iPhone and iPad support Fully on-device operation ParaGraph3D is designed for students, teachers, math enthusiasts, and anyone who wants to explore beautiful mathematical surfaces in 3D. No account required. No ads. No subscription.

proLingo+ is a real-time speech transcription and translation app. Speak naturally, and see your words transcribed and translated instantly. One-time purchase, no subscription — yours forever. KEY FEATURES Real-Time Transcription On-device speech recognition transcribes your voice to text in real-time with high accuracy. Supports 28 languages. Dual ASR Engine Choose between the built-in Local Engine (fully offline, no data leaves your device) or Azure Speech (cloud-powered, superior accuracy, no time limit). Switch anytime in Settings. Instant Translation Translate transcribed text in real-time using on-device translation. No internet connection required for translation. Live Waveform See your voice activity visualized with a smooth, adaptive waveform that responds to your speech in real-time. Session History All transcription sessions are automatically saved. Review and export past sessions anytime. Export & Share Save transcripts as text or SRT subtitle files. Share directly from the app. ONE-TIME PURCHASE Pay once, use forever. No subscription fees, no in-app purchases, no hidden costs. All features included. All future updates included. SUPPORTED LANGUAGES Speech Recognition: 28 languages including English, Chinese, Japanese, Korean, Spanish, French, German, Arabic, Hindi, Thai, Vietnamese, Indonesian, and more. Translation: 20+ language pairs powered by on-device translation. PRIVACY Microphone is used only for live transcription. With the Local Engine, all processing stays on-device. No account required. No tracking. No ads.