HAVIT vs StackGuard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HAVIT
This app uses AI and metabolic science to help you lose fat while preserving muscle. It tracks calories, food, macros, GLP-1 medication, and fasting, offering personalized daily guidance and motivation.
- AI calorie, food, and macro tracking
- GLP-1 medication logging
- Intermittent fasting timer
- AI body composition estimation
- Personalized daily guidance
- Muscle-preserving workouts
- Gamified motivation
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HAVIT — GLP-1 weight tracker + AI calorie, food & macro tracker, built on metabolic science Track calories, food, protein and macros, log your GLP-1, and run intermittent fasting — all in one app. Lose weight too fast and you lose muscle, your metabolism slows, and the weight comes back. HAVIT preserves muscle and works with your metabolic energy flow, so you lose fat and keep it off. Created by alumni of Juvis Diet, Korea's #1 weight-management program. COACH HAVI — DAILY GUIDANCE - Like a friend, like an expert: HAVI reads your data and tells you what to do today - 24/7 coaching for meals, workouts and plateaus, personalized to your progress CALORIE, FOOD & MACRO TRACKER - Food Scan logs meals from a photo; set calorie and calorie-burn goals - Track protein, carbs and fat with macro and meal analysis - Weight tracker and calorie-deficit view to keep fat loss on course BUILT FOR GLP-1 Use HAVIT with Wegovy®, Ozempic®, Mounjaro®, Zepbound®, Saxenda®, semaglutide, tirzepatide and oral GLP-1s: - Protect muscle mass as you lose weight; hit protein when appetite is low - Log shots, doses, side effects, food and weight in one place AI BODY COMPOSITION (ESTIMATE) - 165+ indicators estimated by AI from your intake data and weight: body fat %, skeletal muscle, visceral fat, metabolic age - A statistical estimate — no camera body scan and no device measurement - Track muscle vs. fat, not just the scale FASTING & ACTIVITY - Intermittent fasting tracker with a live timer for your eating window - Auto calorie burn from workouts and steps; syncs with Apple Health and Google Health Connect - Muscle-preserving workouts; water, sleep, routine and cycle tracking - Team Challenges to stay motivated together MINDFULNESS & MOTIVATION - Meditation for stress and self-esteem - Duolingo-style gamification that keeps you going every day 12-WEEK HYPER-PERSONALIZED PROGRAM - 126 plans (N-of-1) with daily actions that build lasting habits WHY HAVIT Calorie apps only count food. Dose trackers only log shots. HAVIT tracks calories, food and macros, protects your muscle, manages your metabolism and guides you every day. Start free. MEDICAL DISCLAIMER: For information and education only; not medical advice, diagnosis or treatment. AI analysis is a statistical estimate, not a medical-device measurement. HAVIT is not affiliated with or endorsed by the makers of Wegovy, Ozempic, Mounjaro, Zepbound or Saxenda; all trademarks belong to their respective owners. Contact: help@aiconnects.com Website: www.aihavit.com Privacy Policy: https://www.aihavit.com/privacy.html Terms of Use: https://www.aihavit.com/terms.html
StackGuard
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For people stacking 10+ supplements who worry about overlap and overdose risk. It's 2am. You're Googling 'magnesium + zinc absorption' for the third time this week. You take 11 supplements daily and you're not entirely sure they aren't canceling each other out. StackGuard is built for serious supplement users — biohackers, nootropic stackers, athletes managing recovery protocols. If you've ever opened a spreadsheet at midnight to figure out whether your B6 dose is too high, this app is for you. WHAT IT DOES - Track 10+ supplements with timing and dosage - Spot overlap before it happens (magnesium + zinc absorption conflicts, etc.) - Detect overdose risk against NIH DSLD upper limits - See effects over weeks — what's actually working - Color-coded daily schedule for morning/midday/evening stacks WHY IT EXISTS Built by a solo dev who stacks 11 supplements daily and got tired of opening 6 browser tabs every time he added a new one. Made with paranoia. For paranoid users. DATA SOURCES - US NIH Dietary Supplement Label Database (DSLD) - Korean MFDS supplement registry - Conflict detection based on published absorption interaction research PRIVACY Your supplement data stays on your device. No analytics tracking what you take. No selling data to vitamin companies. WHO IT'S NOT FOR If you take 1-3 supplements casually, you probably don't need this. StackGuard is for the person whose pill organizer has more than 7 compartments.
Screenshots
Verdict
The clearest difference is in-app purchases: StackGuard at none against HAVIT's 21. HAVIT's advantage is ads (none vs shown) and update cadence (daily vs every 5 days). On price and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. HAVIT sells 19 in-app purchases, starting at $9.99 per month. StackGuard asks for nothing beyond the download.
HAVIT ships an update daily, StackGuard every 5 days. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.
| Parameter | HAVIT | StackGuard |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (170 ratings) — better | — |
| Positive reviews | 98.8% of reviews | — |
| Number of ratings | 170 — better | — |
| Update frequency | Daily — better | Every 5 days |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPod |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 230 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Havit Incorporated | Changmin Kwak |
In-app purchases
HAVIT
- HAVIT Premium 1 Month7 Days trial$9.991 Month
- HAVIT Premium 1 Month$19.991 Month
- HAVIT Premium 3 Months$22.993 Months
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- HAVIT Premium 1 Month3 Days trial$29.991 Month
- HAVIT Premium 1 Month$29.991 Month
- HAVIT Premium 3 Months$39.993 Months
- HAVIT Premium 6 Months2 variants$39.996 Months
- HAVIT Premium 3 Months3 Days trial$39.993 Months
- HAVIT Premium 12 Months$59.991 Year
- HAVIT Premium 12 Months7 Days trial$59.991 Year
- HAVIT Premium 6 Months$59.996 Months
- HAVIT Premium 3 Months$60.993 Months
- HAVIT Premium 12 Months3 Days trial$69.901 Year
- HAVIT Premium 12 Months$69.901 Year
- HAVIT Premium 12 Months3 Days trial$89.991 Year
- HAVIT Premium 12 Months2 variants$89.991 Year
- HAVIT Premium 6 Months7 Days trial$100.996 Months
- HAVIT Premium 12 Months$129.991 Year
- havit.prod.sub_12m_oto_base$349.991 Year
StackGuard
No in-app purchases
Questions
Is HAVIT free?
Is StackGuard free?
Do HAVIT or StackGuard have ads?
Which is updated more often, HAVIT or StackGuard?
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