ParaGraph3D vs UltraConvert

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.

UltraConvert is an all-in-one converter and utility app — units, live currency and crypto, calculators, and a set of field tools that usually need separate apps. UNIT CONVERSION • 16 categories: Length, Weight, Temperature, Volume, Speed, Area, Time, Data, Energy, Pressure, Angle, Torque, Frequency, Density, Fuel Economy, Power • Precise, verified conversion factors • Favourites and full history LIVE CURRENCY & CRYPTO • 161 currencies, updated live • Gold (XAU) spot price • 205 cryptocurrencies via CoinGecko • Keeps working offline with the last rates it fetched CALCULATORS • Standard and scientific modes, with history • Electronics: Ohm's law, power, resistor colour code, LED resistor, voltage divider, wire gauge, dB, capacitor code, battery life • Metal calculator: weight by shape and alloy • Size guide: clothing and shoe charts across regions FIELD TOOLS • GPS: coordinates in decimal, DMS and UTM; speed and altitude tracking; saved pins; GPX export • Compass with Qibla direction • Sun position: sunrise, sunset, golden hour and twilight • Weather for your location • World clocks for 90 cities, plus a meeting planner across time zones • Stopwatch with laps, countdown and interval timers — with a Live Activity on the Lock Screen WIDGETS & APPLE WATCH • Home and Lock Screen widgets for currency, crypto, weather and world clocks • Apple Watch app: quick conversions, calculator, stopwatch and compass BUILT FOR EVERY DEVICE • iPhone and iPad, with layouts that use the whole screen • Dynamic Type and VoiceOver throughout • Light and dark themes 18 LANGUAGES Arabic, Chinese, Dutch, English, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Portuguese, Russian, Spanish, Thai, Turkish, Ukrainian and Vietnamese. PRIVACY No account, no ads, no tracking. What you create stays on your device — the only thing that ever leaves it is a feedback message you choose to send.