Comparison

DFLOW vs Delta Calendar

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

DFLOW

Build positive daily routines and achieve your personal goals with this intuitive habit tracker. It offers personalized customization, daily reminders, and progress visualization to help you create lasting lifestyle changes and foster overall wellness.

Highlights
  • Intuitive habit tracking
  • Goal achievement tools
  • Daily routine building
  • Personalized customization
  • Daily reminders
  • Progress visualization
Features
Read full description

Transform your life with DFLOW, the premier habit-tracking app in the US App Store! Achieve Your Goals: Smash your goals and build a healthier, happier you with our intuitive habit tracker. Whether it's fitness, mindfulness, or personal development, DFLOW is your key to success. Daily Rituals: Establish positive habits effortlessly. Craft a daily routine that aligns with your lifestyle, promoting overall wellness and productivity. Personalized for You: Tailor your habits with our customizable features. DFLOW adapts to your unique needs, ensuring a personalized and effective habit-building journey. Stay Motivated: Harness the power of daily reminders and motivational cues. DFLOW keeps you on track, turning your habits into lasting lifestyle changes. Track Your Progress: Gain valuable insights into your habits and track your progress over time. Visualize your achievements and celebrate every milestone along the way. American Spirit: Immerse yourself in the American spirit of self-improvement. DFLOW captures the essence of the US to make habit-building a fulfilling and enriching experience. Ready to forge new habits? Download DFLOW now and embark on your journey to a better, healthier lifestyle!

About

Delta Calendar

Read full description

Delta Calendar: Your Personal Life Analytics Tool Delta Calendar empowers you to track a wide range of daily activities—from one-time events like meals to recurring habits, your daily intake (like supplements or caffeine), and environmental factors like location and weather—to uncover their impact on your health and performance. Whether you’re exploring how your morning coffee influences attention, how exercise boosts your chess ranking, or how your surroundings affect memory, this app provides a robust framework to log, analyze, and optimize your lifestyle. Key Features and Functionality Intuitive Calendar Interface: Log one-time events (e.g., a workout), recurring habits (e.g., meditation), duration-based events (e.g., employment duration), and environmental changes with ease. Categorize and tag entries to focus on what matters most to you. Detailed Intake Tracking: Monitor items like caffeine, medications, or supplements with detailed pharmacokinetic data (peak time, half-life) and customizable routines to manage daily schedules. Understand how what you take affects your body and mind. Custom Metric Tracking: Define and track personalized metrics like memory, attention, or performance indicators. Create a dataset tailored to your unique goals and lifestyle. Optional Integrations: Connect to HealthKit for automatic step tracking or link your Chess.com username to monitor ELO ratings alongside your daily activities. Environmental Insights: Automatically or manually log your location and weather data (e.g., temperature) to see how your surroundings influence your well-being and metrics. Powerful Analytics Engine: Discover correlations between events and metrics—like how screen time affects focus or weather impacts mood—with clear visual reports spanning daily, weekly, or monthly views. Flexible Data Views: Analyze your data across different timeframes to gain both immediate insights and long-term trends, helping you make informed decisions. Why Use Delta Calendar? Unlock a deeper understanding of how your choices, routines, and environment shape your health, cognitive abilities, and performance. Whether you’re a self-improvement enthusiast, a data-driven professional, or simply curious about your lifestyle, Delta Calendar equips you with the tools to optimize your well-being and achieve your goals. Get Started Today Start tracking today to reveal the patterns that define your life. Your path to a smarter, healthier you begins now! By downloading this app, you agree to the Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

DFLOW4 screens
Delta Calendar4 screens

Verdict

The call

The clearest difference is ads: Delta Calendar at none against DFLOW's shown. Delta Calendar also leads on update cadence (daily vs every 4 months). DFLOW's advantage is iOS requirement (15.6 vs 17.6). On price, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. DFLOW sells 1 one-off in-app purchase and Delta Calendar sells 5 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

DFLOW ships an update every 4 months, Delta Calendar daily. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 6 level
DFLOW versus Delta Calendar: the parameters behind the verdict, then further details
ParameterDFLOWDelta Calendar
PriceFreeFree
Rating2.3 (3 ratings) — better—
Number of ratings3 — better—
Update frequencyEvery 4 monthsDaily — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better17.6
Further details — not scored
Size6 MB22 MB
Age rating4+17+
DeveloperAnton BurovLojas Software Corp

In-app purchases

1 purchases

DFLOW

One-time1
  • DFLOW+$0.99
5 purchases

Delta Calendar

Subscriptions5
  • Unlimited Insights1 Month trial$1.991 Month
  • Premium Cloud Sync & Insights7 Days trial$7.991 Month
  • AI Reports1 Month trial$19.991 Month
Show 2 more
  • Pilot$99.991 Month
  • Cohort$189.991 Month

Questions

Is DFLOW free?
DFLOW is free to download, with in-app purchases available.
Is Delta Calendar free?
Delta Calendar is free to download, with in-app purchases available.
Do DFLOW or Delta Calendar have ads?
DFLOW shows ads; Delta Calendar does not.
Which is updated more often, DFLOW or Delta Calendar?
DFLOW ships an update every 4 months, and Delta Calendar daily. Most recently, DFLOW was updated on November 3, 2026 and Delta Calendar on October 30, 2026.

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