Report updated Apr 12, 2026
Vitamin K
For individuals prescribed blood-thinning medications like Warfarin or Coumadin who need to monitor and manage their dietary Vitamin K intake.
Vitamin K is an established medical app that is a paid app. With a 3.0/5 rating from 10 reviews, it shows polarized user reception. Users particularly appreciate utility for vitamin k tracking, though app stability and crashing remains a common concern.
What Is Vitamin K?
Current Momentum
v25.12V5.1-v231 · 4mo ago
SteadyVitamin K recently introduced a brand-new eBooks section and Worldwide Communities for global user interaction. This major update marks a significant return to development after a long hiatus.
Active Nemesis
ClotKeeper
By ClotKeeper
Other Rivals
7-Day Rank Pulse 🇺🇸
Recent User Mood 🇺🇸
What makes this app unique?
What Does It Look Like?
How Is The App's Momentum Right Now?
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What Are The Key Features?
Comprehensive database of over 930 foods with specific Vitamin K content in mcg, sourced from USDA data.
Visual indicator system (9-color scale) to quickly identify the Vitamin K level of food items.
Record daily food intake with the ability to edit servings, dates, and copy records between days.
Allows users to input and save custom food servings not found in the standard database.
Search functionality supporting two-word phrases with logical operators (AND, OR, BUT NOT).
Who is it for & how much does it cost?
Target Audience
Individuals prescribed blood-thinning medications like Warfarin or Coumadin who need to monitor and manage their dietary Vitamin K intake.
Pricing
Paid- One-time purchase of $2.99 for the iOS version
The developer utilizes a straightforward, one-time purchase model for the iOS app, positioning it as a specialized medical utility rather than a subscription-based service.
Who Built It?
Enrichment in progress
Publisher profile available very soon
What other apps does James Hollender make?
What do users think recently?
High confidence · 10 reviews analyzed
What is the recent mood?
“Recent user voice shows a mixed sentiment. Users appreciate utility for vitamin k tracking and offline functionality, but report app stability and crashing and poor usability and navigation.”
What Users Love
Great app that works offline. Color coding makes it a breeze to understand.
I like that this app adds up and shows your total daily vitamin K intake
Great app that works offline. No internet required.
What Frustrates Users
It won't even open anymore.
Ever since the last update, I can't keep the app running.
It worked for a day & seemed like a great app until it began crashing.
The search was unintuitive and the app didn’t have the food I wanted
It's difficult to use. Not really good for recording daily intake - yet.
What is the competitive landscape for Vitamin K?
How's The Medical Market?
How does it evolve in the Medical market?
| Chart | Rank | Change |
|---|---|---|
| Paid | #97 | NEW |
Medical Market Trend
Medical market trend & dynamics
Available very soon
The rivals identified
The Nemesis
Head to Head
ClotKeeper has the strategic edge due to its more recent maintenance and the inclusion of INR tracking, which is the primary clinical metric for the target audience. While Vitamin K offers superior search logic, its 2019 update status makes it a 'legacy' choice compared to ClotKeeper.
What sets Vitamin K apart
- +
Highly granular 9-color risk scale for immediate visual identification of Vitamin K levels
- +
Extensive search functionality supporting logical operators (AND, OR, BUT NOT) for complex food queries
What's ClotKeeper's Edge
- -
More frequent update cycle ensuring compatibility with modern iOS versions
- -
Broader feature set including INR value recording and medication reminders
Peers
Uses lab-analyzed data sources (NCCDB) which are often more detailed than standard USDA entries
Tracks a massive range of vitamins and minerals beyond just Vitamin K
Calorie Counter - MyNetDiary
★4.8 (146K)MyNetDiary Inc.
A comprehensive calorie and nutrient tracker that includes Vitamin K monitoring as part of its premium health tracking suite.
Robust barcode scanner for branded food items, which the analyzed app lacks
Integration with Apple Health and wearable devices
New Kids on the Block
INR log
★2.9 (18)HealthObs Ltd
A modern, streamlined alternative for tracking anticoagulant data with a focus on ease of use and mobile-first design.
Modern iOS design language and gesture-based navigation
Simplified data entry specifically optimized for elderly users or those with limited dexterity
The outtake for Vitamin K
SWOT Analysis
Core Strengths
- Highly granular 9-color risk scale
- Advanced search with logical operators
- Full offline functionality
- USDA-sourced data integrity
Critical Frictions
- High-frequency crashing on iOS
- Legacy iOS codebase (2019)
- Unintuitive intake logging navigation
- Lack of cloud synchronization
Growth Levers
- Integration of INR tracking
- Barcode scanner implementation
- Migration of users to the newer 'INR Assist' platform
Market Threats
- Modern nutrition trackers (Cronometer) with superior UX
- Competitors offering integrated medication reminders
- Platform obsolescence due to lack of iOS updates
What are the next best moves?
Prioritize iOS stability patch
App stability/crashing is the #1 complaint theme, leading to a 'Mixed' mood and 3.0-star rating.
Integrate INR tracking functionality
Nemesis (ClotKeeper) wins by offering a holistic view of both INR and Vitamin K, which is the primary clinical need.
Streamline the intake logging UI
Users reported the app is 'difficult to use' for daily recording, which is a medium-frequency usability complaint.
Feature Gaps vs Competitors
- Integrated INR tracking (available in ClotKeeper)
- Cloud synchronization (available in ClotKeeper)
- Medication reminders (available in ClotKeeper)
- Barcode scanner (available in MyNetDiary)
Key Takeaways
Vitamin K is a high-utility legacy app currently suffering from critical technical debt. While its color-coded database remains a strong differentiator, the lack of INR tracking and persistent crashing on iOS makes it vulnerable to modern competitors like ClotKeeper.
Where Is It Heading?
Mixed Signals
Android version updated Dec 2025 — indicates active maintenance on at least one platform.
iOS version last updated Dec 2019 — legacy status creates compatibility risks.
High-frequency crash reports in sentiment data — significant technical debt impacting retention.