Train.
Sets, reps, volume, RPE, and PRs in a structured history that feeds reports automatically.
Weekly volume viewBy movement
Premium AI fitnessTrain.
Train.
Fuel. Rise.
Get results.
AI calculates your calorie burn, your deficit, and your macro targets from your body metrics. You snap a meal, scan a barcode, or type a sentence. The math is done. The deficit is honest.
AI calculates your deficit
Snap meals in seconds
USDA-grounded macros
AI reads your week
The daily loop
Four moves that decide the day, connected.
Train, fuel, share the win, then adjust from clean data. GemFit is built around what serious users repeat every day.
Fuel.
Calories, macros, and AI confidence visible at a glance. No spreadsheet, no calorie shame.
Connect.
Wins, meals, and training clips beside the data that proves they happened.
Report.
Weekly recaps that read like a coach's note. Calories, volume, adherence, body trend, and what to do next.
Weekly recapRead in 60s
Pro AI, built for weight loss
AI does the math.
You just log.
From your body metrics, GemFit Pro builds your TDEE, calculates every workout and step burn, and runs a daily calorie deficit you can actually trust. Logging stays simple. The math stops being guesswork.
AI calculates your calorie burn.
From your age, weight, height, sex, and activity level, AI builds your TDEE, then adds workout and step burn for every session, with the method shown so the number is not a black box.
AI builds your daily deficit.
Pick a goal (lose weight, recomp, gain). AI sets a calorie target with safety guardrails, splits macros around a bodyweight-anchored protein floor, and adjusts the math when your weight or training changes.
Snap a plate, log the meal.
Point the camera at any meal. Vision AI identifies foods, estimates portions with reasoning, and returns calories, protein, carbs, and fat in seconds. No database hunting.
Type a sentence, skip the database.
Write "grilled chicken, rice, broccoli" and the AI breaks it into macros and micronutrients. Barcode scans run the same engine against USDA and verified databases.
Confidence on every single meal.
Each entry is tagged official, web-verified, or AI estimate. You see where the macros came from, so the deficit math is built on numbers you can trust.
AI reads your trailing seven days.
Ask the coach how you are doing. It reads meals, workouts, body weight, sleep, and the running deficit, then answers in two short sentences. Calm, not preachy.
Honest by design. GemFit shows whether each macro estimate is official, web-verified, or an AI guess, and applies safety guardrails on every deficit. No starvation targets, no silent guesses.
Accuracy by design
More than just LLM in, LLM out.
Most AI nutrition apps run a meal through one model and call it a day. GemFit runs every entry through up to four grounding sources before returning a number, and shows you which tier the result came from.
Official databases first
Barcoded items resolve against Open Food Facts. Whole-food entries query USDA FoodData Central. Both return the highest confidence tier when matched.
Restaurant menu lookups
Recognized chain meals are cross-referenced with the official nutrition pages of major restaurant brands. Verified menu data overrides any AI estimate.
Two independent web searches
If no official source is found, two separate grounded web searches run in parallel. Results are accepted only when both sources agree within a 15% tolerance, then averaged.
AI estimate, marked clearly
When verification fails, the system returns an AI estimate with a visible confidence tier. You always know whether you are looking at verified data or a model guess.
Guardrails on every step
Asks instead of guessing
Ambiguous meals trigger a one-tap clarification (which sauce, which size) before the AI commits to a number.
Schema and sanity checks
Outputs are validated against a strict schema. Calories without macros, missing nutrients, and out-of-range portions are rejected before they reach your log.
Tier transparency
Every meal carries one of four tiers: official, web-corroborated, AI estimate, or unresolved. The day grade is computed from those scores so it cannot overstate confidence.
Falls back, does not fabricate
If both grounding and corroboration fail, the entry stays unresolved and waits for manual edit instead of inventing a value.
Pricing made simple
Free does the basics.
Pro does the math.
Every other fitness app has manual tracking, a dashboard, and a feed. Pro is what makes weight loss actually work, by letting AI calculate the parts that take time, accuracy, and discipline.
Free
$0 forever
Everything a normal fitness app gives you, no credit card.
- Manual workout logging (sets, reps, weight, RPE)
- Manual meal logging from a food database
- Calorie and macro tracker
- Premium dashboard and weekly summary
- Workout history, PRs, and templates
- Private accountability circles and feed
- Body weight and basic body metric tracking
- iOS, Android, and web access
Pro
AI does the heavy lifting
Everything in Free, plus AI that calculates and tracks for you.
- AI photo meal logging (Gemini Vision)
- AI text and barcode parsing with USDA grounding
- AI calorie burn for workouts and steps
- AI TDEE and daily deficit calculator
- Confidence tiers on every meal
- AI weekly recap with drift detection
- AI coach Q&A grounded in your real data
- Micronutrients, allergen and diet flags
- AI meal and workout plan generation
- Body composition photo analysis
The web app
Built like a command center,
not a calorie spreadsheet.
A premium home base for calories, macros, meals, workouts, AI feedback, and weekly reports. Designed for scanning, not hunting through tabs.
- Calorie ring as the visual anchor, macros directly underneath
- Today's meals, workout, and AI confidence beside the rings
- Reports live on the home surface, not buried in settings
On every device
Same flow on the
gym floor.
Capture sets between rests, snap a meal, or open the AI coach between rounds. The mobile app keeps the loop tight when you are not at a desk.
One-tap workout logging AI nutrition coach Private accountability circles
How the day moves
Capture. Read. Adjust.
The product opinion is that good fitness software is calm, fast, and short on advice. Three moves per day, repeated.
Log it fast.
Sets, reps, RPE, meals, body weight, sleep, all in one daily flow that takes a few seconds and remembers your patterns.
See the signal.
AI grades calorie balance, macro fit, training load, and recovery. One short read per day, never a wall of advice.
Move tomorrow.
The weekly report tells you what changed and what one thing matters most. Adjust the plan, not your willpower.
Read the guides
Every workflow, written out.
Long-form articles for every part of the platform. Practical, specific, and free to read without signing up.
AI fitness app
GemFit is the AI fitness app that makes macro tracking simple. Snap, type, or scan a meal. AI grades the day, catches weekly drift, and supports the consistency that weight loss actually requires.
Workout log
Type or speak a workout. GemFit's AI parses sets, reps, weight, and duration in seconds, then ties it to volume, calories, and weekly reports.
Macro tracker
Snap, type, or scan a meal. GemFit's AI macro tracker shows calories, protein, carbs, and fat with confidence on every entry, so the deficit is built on numbers you can trust.
Nutrition tracker
Snap a meal, type a sentence, or scan a barcode. GemFit's AI nutrition tracker logs calories and macros in seconds with confidence shown on every entry.
AI nutrition coach
GemFit's AI nutrition coach grades meals, reads your week, and answers questions in two short sentences. Calm guidance, not a chatbot wall of text.
Social fitness app
GemFit pairs a fitness-first social feed with workouts, meals, and AI-verified macros. Accountability built on data you can see, not vibes.
Progress reports
GemFit's AI reads your week of workouts, meals, body weight, and recovery, then writes a recap in plain English. Charts kept underneath for power users.
Fitness dashboard
GemFit's fitness dashboard puts calories, macros, AI confidence, meals, workouts, and weekly reports on one premium home surface. Built for scanning, not hunting.
For coaches
Clients log workouts and meals via AI in seconds. Coaches see structured data with confidence tiers, weekly reports, and check-ins, all in one premium app.
Common questions
Honest answers about AI fitness.
Real answers to the questions people ask before they sign up. How the AI works, what is free, what is Pro, and how the deficit math actually runs.
Yes. The Free tier includes manual workout and meal logging, the macro tracker, the premium dashboard, weekly summaries, body weight tracking, and private accountability circles. No credit card required.
Pro is where AI does the math. Photo, text, and barcode meal logging. AI calorie burn from workouts and steps. AI TDEE plus deficit calculator from your body metrics. Confidence tiers on every meal. Weekly AI recap, AI coach Q&A, and micronutrients.
From your age, weight, height, sex, and activity level, AI builds your TDEE. Workout and step burn add to it daily. Your goal (lose weight, recomp, gain) sets a target with safety guardrails. The deficit is your net for the day, calculated live as you log.
It depends on the entry. Barcode and recipe entries pull verified data from USDA and Open Food Facts and score highest on the confidence scale. Photo estimates score lower and are editable in one tap. The score is shown on every meal so you always know what you are looking at.
GemFit does not promise a specific outcome. It does make the behaviors that produce sustained weight loss (low-friction logging, accurate macros, honest deficit math, weekly review) much easier to keep doing. That is what a calorie deficit actually requires.
Yes. Pro is month-to-month with no contract. Your Free tier and your data remain available if you cancel, you just lose the AI features.
Make the next rep,
meal, and report count.
Open a clean dashboard, log the day, and let GemFit turn training and nutrition data into momentum you can use.
No credit card required.
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