# 捕手Spotter: Partner Log — Partner logging, AI form coach > Partner logging, AI form coach (iPhone/iPad app by YiChing LIN.) - Source: https://appshunter.io/ios/app/spotter-partner-log/id6761963167 (this page in markdown: same URL + `.md`) - Developer: [YiChing LIN](https://appshunter.io/developer/1892235695) - Category: Health & Fitness, Lifestyle - Price: Free with in-app purchases - Age rating: 12+ - Requires: iOS 15.1 · 42 MB - Languages: American English - Released: 2026-05-01 - Data updated: 2026-10-03 - User reviews in markdown: https://appshunter.io/ios/app/spotter-partner-log/id6761963167/reviews.md ## What is 捕手Spotter? Training alone is easy to quit. Training together sticks. 捕手Spotter is a workout log built for people who train together. Become partners with your significant other, a friend, or your training buddy, and you can log workouts, meals, and weight for each other. One entry, both of you logged. [ Partner Logging ] • Invite someone from your friends list; it takes effect once they accept • Before each entry, choose who it's for: just you, just your partner, or both • Swipe left or right on the Training and Weight tabs to jump to your partner's page and log for them • Your partner can edit at the same time; you both see the same up-to-date data • Unlink anytime; each of you keeps your own records [ Activity Feed ] • Open the app and see what your friends trained: exercises, weights, sets • Like and comment to cheer each other on • Add friends with a friend code, QR code, or shared link [ Effortless Logging ] • Adjust weight and reps with + / − and tap once to log a set • The next set starts from your last numbers, no retyping • Built-in rest timer: ±15 seconds, skip, and a notification when time's up, also on the Lock Screen and Dynamic Island • Supersets, drop sets, pause sets and more, plus cardio • Built-in push/pull/legs, upper/lower, and full-body programs, or plan your own week [ Weight & Nutrition ] • Log weight daily; scroll the trend chart sideways to see your 7-day average and weekly change • Log meals with a photo or by hand: protein, carbs, fat, and calories against your daily targets • Start typing a food name to search past entries and fill everything in with one tap • You can log weight and meals for your partner too • Diary and photo compare: pick two diary photos side by side to see how your body changed [ AI Assist ] • AI form check: film a squat, bench, or deadlift and get specific tips • AI food recognition: snap a meal to estimate calories and macros • AI workout recap: estimated calories burned, plus convenience-store snack ideas based on your training (Taiwan) • Videos stay on your phone: form check sends only 30 key frames [ Never Lose Your Data ] • Sign in with Apple or Google and your workouts, weight, and meals back up automatically, even if you switch phones [ Who It's For ] • You have a regular training partner and want to run the same program • You coach someone, or someone coaches you, and want to log for each other • You train alone and need friends keeping you honest • You want workouts, food, and weight in one app [ Spotter Pro ] Free to download. The free tier lets you log workouts, add partners, track weight and meals, and write diary entries, with a daily free AI allowance: 1 form check, 3 food recognitions, 1 workout recap. Spotter Pro raises your daily AI limits and unlocks advanced features: • Up to 30 AI form checks per day • Up to 20 AI food recognitions per day • Up to 3 AI workout recaps per day • Advanced stats with your full history (free tier: last 30 days) • Multiple training plans (free tier: 1) Plans (prices and intro offers vary by region; the final amount is shown on the subscription screen at checkout): • Monthly subscription with a discounted first month • Yearly subscription with a 7-day free trial Payment will be charged to your Apple Account at purchase confirmation. Subscription auto-renews unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in App Store → Account → Subscriptions. • Privacy Policy: https://spotter-partner.vercel.app/en/privacy • Terms of Use: https://spotter-partner.vercel.app/en/terms [ Contact ] • Feedback: Settings → Feedback in the app • Email: littleching26@gmail.com Built by an engineer who trains every day. I read every message. ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Hatch Pro Monthly | $2.99 | per month | | Hatch Pro Yearly | $19.99 | per year | ## Version history (last 5 releases) ### 2.3.0 — 2026-10-01 • New name and icon: Hatch is now 捕手Spotter — one shared workout log for you and your partner • Swipe left or right on the Training and Weight tabs to jump to your partner's page and log for them • Much faster app startup • The weight trend chart now scrolls continuously, with values shown to two decimals • When logging meals, search your past entries by food name and fill everything in with one tap • Profile posts now show the actual date and time • Fixed the rest timer not sending a notification when the countdown ended • Fixed saving a meal sometimes creating an unnamed entry ### 2.2.2 — 2026-08-05 ・New Partners: log workouts and meals for each other with your partner or training buddy, synced live on both phones ・One entry can go into both accounts at once — perfect for training the same program together ・New Photo Compare: pick two diary photos side by side to see how your body has changed ・Profile moved to a bottom tab, with diary, workouts and weight all in one place ・Much faster app startup ・Fixed duplicate rest-timer notifications ### 2.2.1 — 2026-08-03 ・New Workout Diary: snap a photo on the spot or pick from your library, add a note, and keep it private or share with friends ・Redesigned body-weight trend chart — see your progress at a glance ・Refreshed profile page with separate tabs for workouts and diary ・Log past workouts you forgot to record ・Various fixes to the logging flow ### 2.2.0 — 2026-07-13 ・Major UI refresh: pet-raising removed so you can focus on pure workout logging + AI coaching ・Smoother, more intuitive flow throughout for logging workouts, weight, and meals ### 2.1.2 — 2026-06-09 ・The rest timer now rings even in the background, with a cuter xylophone alert ・Swipe left on the weight chart to view earlier history ・Fixed an occasional crash when opening the app in the morning ## Apps similar to 捕手Spotter | App | Rating | Price | Category | | --- | --- | --- | --- | | [Hatch: Gym & Workout Tracker](https://appshunter.io/ios/app/hatch-gym-and-workout-tracker/id6772689458) | — | Free | Health & Fitness | | [Qualia Health](https://appshunter.io/ios/app/qualia-health/id6751347551) | — | Free | Health & Fitness | | [Pync Pet Tech](https://appshunter.io/ios/app/pync-pet-tech/id6761974070) | — | Free | Health & Fitness | | [Nostavia Health](https://appshunter.io/ios/app/nostavia-health/id6760108353) | — | Free | Health & Fitness | | [Avela - Calorie Coach](https://appshunter.io/ios/app/avela-calorie-coach/id6768473411) | — | Free | Health & Fitness | | [FormCoach: AI Form Coach](https://appshunter.io/ios/app/formcoach-ai-form-coach/id6761644968) | — | Free | Health & Fitness | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-03.*