Report updated May 20, 2026
Fastie: Calorie & Food Tracker
For individuals focused on weight loss, metabolic health, and intermittent fasting who require structured meal planning and calorie tracking.
Fastie: Calorie & Food Tracker is an established health & fitness app that is free with in-app purchases. With a 4.5/5 rating from 5.6K reviews, it shows polarized user reception. Users particularly appreciate food scanning functionality provides significant utility for tracking daily nutritional intake and progress, though inaccurate ai food recognition and lack of manual editing tools frustrate users seeking precision remains a common concern.
What is Fastie: Calorie & Food Tracker?
Fastie is a health and fitness app for intermittent fasting and calorie tracking on iOS and Android.
Users hire Fastie to manage weight loss and metabolic health through structured fasting schedules, though the current AI-only logging limits the utility for users requiring high-precision data entry.
Current Momentum
v1.1 · 6mo ago
Maintenance- Added Fasting Plans feature.
- Ships regular stability updates.
Active Nemesis
Lose It! – Calorie Counter
By FitNow
Other Rivals
7-Day Rank Pulse 🇺🇸
Health & FitnessNo ranking data
Rating Pulse 🇺🇸
Recent User Mood
What makes this app unique?
What Does It Look Like?
What Are The Key Features?
Rapid food logging via camera.
Customizable fasting schedules.
Protein, carb, and fat logging.
Curated diet-specific meal suggestions.
How much does it cost?
- Free tier
- Premium tier
Freemium model utilizing feature-gating for advanced nutritional planning to drive subscription conversion.
Who Built It?
DEEP FLOW SOFTWARE SERVICES
Deploying specialized generative AI tools to streamline productivity, language acquisition, and device utility for a global mobile audience.
Portfolio
13
Apps
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What do users think recently?
High confidence · Latest 75 of 81 total reviews analyzed · Based on 81 reviews. Signal may be noisy.
How did the latest release land?
What is the recent mood?
Recent user voice shows a mixed sentiment. Users appreciate food scanning functionality provides significant utility for tracking daily nutritional intake and progress, but report inaccurate ai food recognition and lack of manual editing tools frustrate users seeking precision.
What Users Love
What Frustrates Users
What Users Want
How have ratings & review volume moved?
Rating, review sentiment, and total reviews over time, with release markers showing the post-launch impact.
Vertical markers = app releases. Hover any release for the post-release impact delta.
View the full user-sentiment analysis
Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.
What is the competitive landscape for Fastie: Calorie & Food Tracker?
How's The Health & Fitness Market?
How does it evolve in the Health & Fitness market?
Fastie holds a #32 Grossing rank in the US Health & Fitness category, signaling strong monetization despite a mixed sentiment score of 45. The gap between its high grossing rank and the user frustration regarding AI accuracy suggests that current revenue is driven by initial conversion rather than long-term retention.
Rank progression
13 active rankings tracked — 30-day window
Which niche is Fastie: Calorie & Food Tracker in?
to track nutrition and intermittent fasting progress
Explore the full Calorie Counting Trackers niche
Every app in this space — 61 tracked, the niche's live rankings, and Marlvel's editorial take on the job-to-be-done.
The rivals identified
Nemeses(1)
Healthify dominates the market share for AI-driven nutrition tracking, directly competing with Fastie's goal of simplifying dietary management through technology.
Contenders(4)
This app positions itself as a virtual nutrition assistant, aiming to replace manual logging with automated AI guidance.
A high-performing competitor that leverages a polished UI and robust barcode scanning to capture the mainstream tracking market.
This app targets the specific subset of users focused on protein intake and personalized nutrition plans.
Calz competes for the same health-conscious demographic by combining AI-powered scanning with intermittent fasting tools.
Same space(3)
Competes for the same 'lifestyle improvement' user segment, focusing on habit tracking and progress monitoring.
This app competes by offering a proprietary intelligence engine that bridges the gap between nutrition tracking and meal preparation.
While focused on pet activity, it competes for the same 'health and fitness' category real estate and user attention.
Compare Fastie: Calorie & Food Tracker against every rival
All rivals in one side-by-side table — identity, store metrics, ratings & sentiment, and strategic intel — plus a head-to-head page for each.
The outtake for Fastie: Calorie & Food Tracker
Strengths to defend, gaps to attack
Core Strengths
- Fasting-first habit loop drives daily active usage
- Barcode scanner reduces friction for new users
Critical Frictions
- Lack of manual data correction creates precision churn
- Aggressive subscription prompts drive negative sentiment
Growth Levers
- Manual override implementation to capture precision-focused users
- B2B partnerships with metabolic health clinics
Market Threats
- Lose It! database accuracy drains high-intent users
- AI-first entrants lowering manual search friction
What are the next best moves?
Ship manual override for AI food logs because users cite inaccuracy as a top churn driver → improve retention
Top complaint theme identifies AI misidentification as the primary barrier to precision logging.
Trade-off: Pause the meal-planning recipe expansion to prioritize core logging utility.
Audit subscription paywall triggers because users report feeling misled by trial terms → reduce refund surge
Sentiment analysis highlights aggressive prompts as a top negative experience for new users.
Trade-off: Same-quarter capacity available — no major lever displaced.
A counter-intuitive read
The app's aggressive monetization is not a bug but a necessary hedge against the high cost of maintaining an AI-based food recognition engine that lacks a community-verified database.
Feature Gaps vs Competitors
- Verified community food database (available in Lose It!)
- Manual nutrition data editing (available in MyNetDiary)
Key Takeaways
Fastie succeeds as a fasting-first tracker, but the lack of manual data editing creates a hard ceiling for serious users, so the PM must prioritize logging precision to prevent churn to database-heavy competitors.
Where Is It Heading?
Mixed Signals
The health tracking market is shifting toward high-precision data entry, leaving apps that rely solely on AI recognition vulnerable to churn. Fastie must bridge the gap between its current AI-first approach and the user demand for manual control to maintain its #32 grossing position.
Persistent AI inaccuracy in the latest release prevents manual correction, which forces power users to abandon the app for more reliable competitors.
The addition of customizable fasting plans in the latest release provides a clear retention hook that differentiates the app from generic calorie counters.