Check vs Prevyu

The most powerful motivation in fitness isn't a program, a coach, or a number on a scale. It's seeing your own body change. Check-In is a progress photo app built around one thing: showing you how far you've come. Check in consistently, build your streak, and watch your timeline fill with proof of your work, week by week, month by month, phase by phase. See the difference The comparison view puts any two check-ins side by side for the same pose. Drag the slider. The work speaks for itself. No estimated body fat charts, no AI analysis, no progress bars. Just your photos, next to each other, showing you exactly what has changed. Built for the habit Ghost overlay shows your last check-in as a semi-transparent guide in the camera view before you shoot. Same pose, same angle, every time. Consistent photos make comparisons actually useful. Streak tracking rewards showing up. Check in on time and it builds. Miss and it resets. Your cadence is now visible and honest. Anchored reminders count from your actual last check-in, not a fixed weekday. Your schedule stays consistent no matter when you started. Widgets and Live Activities put your progress and quick entry points on your Home Screen and Lock Screen. Check-In is there when you need it. Yours alone Progress photos are personal. Check-In keeps them that way. Your photos are stored on your device and never uploaded to a server. Nobody else sees them unless you choose to share.

Snap one photo and get an AI estimate of your body fat percentage, muscle index (FFMI) and shoulder-to-waist ratio in seconds. Then check in each week and watch those numbers move toward the physique you choose. Prevyu is a body fat scanner and physique tracker in one. The first reading shows where you are. Every check-in after it shows whether your cut, bulk or recomp is working. ONE PHOTO, A FULL READING Take a photo in good light and Prevyu draws the shoulder and waist guides on it, then estimates your body fat percentage, muscle index (FFMI) and shoulder-to-waist ratio. Each figure comes with a plain meaning, such as "athletic range" or "room to build". Your height and weight turn the estimate into lean mass and muscle index. CHOOSE WHERE YOU'RE HEADED Pick a goal physique on a map of nine builds, from Lean and Trim to Athletic, Muscular and Powerful, plotted by body fat and muscle. See yourself on the map, the route to your goal, and whether to get leaner, stronger or both. SEE YOUR GOAL PHYSIQUE Create an AI preview of you at the build you picked. It illustrates the direction, never a prediction of exactly how you will look. TRACK EVERY CHECK-IN Today shows your score toward your goal, what moved since your last check-in, and the next step with what it's worth. Progress charts body fat, muscle index, weight and proportions over 3 months, 6 months or all time. Between check-ins, log your weight, an optional scale body fat % and what you trained; Progress adds a smoothed weight trend and a day-by-day training grid. COMPARE PROGRESS PHOTOS Put any two check-ins side by side and get a verdict in plain words, the numbers behind it and an area-by-area read. Prevyu flags photos taken from a different angle or distance so you compare like with like. RATE YOUR PHYSIQUE FROM THREE ANGLES A Body Assessment uses front, side and back photos to rank your own regions against each other, screen your posture and give you one training focus for the next eight weeks. ONE CLEAR NEXT STEP Coach leads with your next move: when to check in, when to run a Bulk-or-Cut read, when to reassess. Bulk or Cut gives a clear call for where you are right now: cut, bulk, recomp or maintain. FREE AND PRO Check in as often as you like. Free includes 15 body fat readings in total, 4 comparisons or Bulk-or-Cut reads each month, your first Body Assessment and one goal preview. Prevyu Pro reads every check-in in full (body fat, muscle index and proportions) and adds the goal map on Today, the full score breakdown, more comparisons, Bulk-or-Cut reads and Body Assessments, and 3 goal previews every month. PRIVATE BY DESIGN Your photos stay yours: encrypted, never used for AI training, and deletable at any time, one photo or your whole account. With your permission, photos are analyzed by a third-party AI service (Google Gemini) to produce readings and previews; this permission is required for readings. Prevyu is a general wellness app, not a medical device. Body fat, muscle index, posture and other readings are estimates from photos and can differ from clinical measurements such as DEXA. Prevyu does not diagnose, treat or prevent any condition. Talk to a qualified professional before making health decisions. Prevyu Pro is an auto-renewing subscription, monthly or annual. Your local price is shown before you buy. Payment is charged to your Apple Account, and the plan renews unless you cancel at least 24 hours before the end of the current period. Manage or cancel any time in your App Store account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://downgatelabs.com/privacy-prevyu.html Screenshots show fictional demo users; their photos are AI-generated.