Meet Anvi vs FlatSixDynamics

Meet Anvi turns early learning into playtime. Built for children ages 3-6, it brings letters, numbers, shapes, colors, drawing and first stories together in one bright app with no ads, on iPhone and iPad. Free to download, with every learning activity included; Thinking and Math Wizard come with the optional Anvi Plus. A LEARNING PATH, STOP BY STOP Every activity is a stop on one path from Preschool to UKG. Anvi suggests the next stop, and Free play keeps every activity on one colorful grid. LETTERS A TO Z A friendly illustration for every letter and clear audio pronunciation. Tap any letter to hear it spoken and see the word it belongs to. LETTER TRACING Stroke-by-stroke practice with real-time accuracy feedback and stars for a job well done. Handwriting confidence, one letter at a time. MATCHING GAMES Drag letters onto the pictures they belong to. Simple, tactile play that builds letter recognition and memory. COUNTING FUN Count up with big, friendly numbers and colorful stars, at your child's own pace, up to one hundred. BLOCKS: SHAPE MATCHING Sort circles, squares, triangles and more into the right places. Early geometry that feels like a puzzle. ART: COLOR MATCHING Drag everyday objects into the color they belong to and build color recognition through play. DRAWING CANVAS A blank canvas with a full color palette, guided prompts, and on-device shape recognition that celebrates every circle, square and star your child draws. STORY TIME 60 stories across Preschool, LKG and UKG, matched to your child's level. Tap any word to hear it read aloud. THINKING, WITH ANVI PLUS Your child draws a picture and tells Anvi about it out loud; the app writes down their words for you to read later. Speech becomes text on the device: no audio is kept, and entries never leave it. MATH WIZARD, WITH ANVI PLUS Short puzzles with gentle help from Anvi: counting, comparing, number order, patterns, shapes and first sums. They follow your child's level, a miss gets a count-along rather than a red cross, and progress stays on the device. REWARDS THAT MOTIVATE Stars for every activity, daily streaks, and a collection of badges to unlock. Small wins that keep children coming back. PROGRESS YOU CAN SEE The Journey view charts learning activity by day, week, month and year, so you always know what your child has been working on. PARENT DASHBOARD A PIN-protected area for grown-ups with a weekly summary, a skills heat map that shows strengths and gaps, and daily screen-time limits; when time is up, the app winds down gently. ONE APP, EVERY CHILD Create a profile for each child with their own avatar, theme color and level, so the activities grow with them. Progress is tracked separately per child and synced securely to your account. DESIGNED FOR FAMILIES - Text-to-speech for every letter, word and story - Adjustable speech speed and haptic feedback - Full iPhone and iPad layouts, portrait and landscape - No ads, no third-party tracking or analytics - Learning activities run on device; an internet connection is only needed to sign in and to sync progress ANVI PLUS Anvi Plus is an optional subscription that unlocks every exclusive feature for every child on your account: Thinking and Math Wizard today, with more to come. Only a parent can start it and switch each feature on, from Controls behind the parent PIN. Choose weekly, monthly or yearly. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours before the period ends. Manage or cancel it any time in your App Store account settings. Family Sharing is supported. Terms of Use: https://meetanvi.com/pages/terms.html Privacy Policy: https://meetanvi.com/pages/privacy.html Meet Anvi is made for parents and teachers who want screen time to be time well spent. Recommended for ages 3-6.

See real airflow around a reference car — free, no account, no subscription. One optional, one-time purchase (Full Access) unlocks the full speed range, additional views, every setup, and your own car from a photo. Bought the app before 2.0? You keep everything. FlatSixDynamics is a wind tunnel you can hold. The air around the silhouette of a rear-engined sports car moves live, frame by frame, right on your device. Change the setup, and watch the air answer. No footage. No fakery. Actual physics. You set it. You see the result. Drop the ride height from stock to track, and watch the floor start to work: the air under the car speeds up, pressure falls, and the body is pulled toward the road. Deploy the rear wing, and watch the wake behind the car close. Push the speed slider from a standstill to four hundred kilometers per hour, and watch the spoiler rise on its own, exactly as it does on the real vehicle. Every setup change comes back as a number. Track stance at two hundred kilometers per hour: watch the drag figure settle against stock, while the downforce reading breathes with the wake behind the car. Not your car's certified figures. But a number you can argue with. What's free The live airflow view on the reference car, stock stance, active spoiler, in a speed window of 50 to 90 km/h — wide enough to watch the spoiler deploy and the wake form. No time limit. What Full Access adds — The full speed range, up to four hundred kilometers per hour. — Pressure, cockpit, grid, and lab views. — The fixed-wing setup and the sport and track ride heights. — Your own car, traced from a side-profile photo. One-time purchase. No subscription. Restore purchases any time from Settings. What it shows — Stagnation at the nose, where the air piles up and pressure spikes. — Acceleration over the roof line, where pressure drops and the air runs fastest. — The gap under the floor, tightening as the car drops, and the pressure map answering. — Separation behind the rear glass, where the flow lets go of the body. — The wake. Swirling vortices. The quiet pressure recovery downstream. — The deployed rear spoiler bending the flow as the slider crosses ninety, then one hundred fifty kilometers per hour. Your own silhouette (Full Access) Bring a side-profile photo of a rear-engined sports car into the airflow view in place of the built-in reference shape. The outline is traced automatically, and the same live airflow — pressure, flow, wake — plays across your own car's form instead of the default one. Results depend on the vehicle and the angle of the photo. How it works A two-dimensional airflow model built on the full physics of compressible air — not a simplified approximation. Five hundred twelve by one hundred ninety-two cells. A body-fitted grid clusters resolution near the surface, where the boundary layer lives. The flow field shown as vector arrows. The pressure field shown as a heatmap. Nothing pre-rendered. Every frame is live. What it does not show A two-dimensional slice cannot capture the wing-tip vortices, the wheel wakes, the cooling air paths, the side-glass separation. Professional engineering teams work in three dimensions on industrial hardware. This is none of those things. If you came here for the aerodynamic intuition — the way a pressure wave hugs a roofline, the way the floor pulls harder as the car drops — the app will reward you. If you came here for numbers to put in a slide deck, please don't. Want to go deeper? (Full Access) Four guided explorations — a wing, a flowing shape, a narrowing channel, a track wing — reveal the same forces at work in their purest form. Optional. There when you're curious. What it runs on A modern iPhone. The airflow model is instrument-grade and runs entirely on-device. No server. No account. No tracking. Illustrative depiction. Real physics, two-dimensional, consumer hardware. Not for engineering use. No affiliation with any vehicle manufacturer.