Comparison

Private Journal vs Caffeine Tracker +

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

Head to head
About

Private Journal

This app helps you track your thoughts, goals, and habits to understand what leads to your success. Create secure journal entries and customizable trackers to encourage positive behaviors and achieve personal growth. All your data is stored privately on your device.

Highlights
  • Secure journal entries
  • Customizable habit trackers
  • Goal setting
  • Freeform journaling
  • Data stored on device
  • Reflection and analysis
Features
Read full description

Free 14-day trial, then a one-time $9.99 for lifetime access. No subscription, ever. A private journal and habit tracker that keeps your words on your iPhone. Write freely in full screen, track weight, steps and water with 60-day trends, and attach photos to the moments that matter. On-device AI turns each day into a short, clear summary: important items, meeting decisions and next steps, and gentle nutrition estimates. Your journal is never sent to a server. Already a user? You keep lifetime access at no cost. Thank you! AI nutrition estimates are for general information only and are not medical advice. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://correlateencourage.com/privacy-policy Additional Terms of Use: https://correlateencourage.com/ce-app-terms-of-use

About

Caffeine Tracker +

Take control of your caffeine intake with powerful tracking, personalized reduction plans, and real-time insights. Understand your habits, sleep better, and reduce anxiety with data-driven tools and visual progress tracking.

Highlights
  • Caffeine tracking for various beverages
  • Real-time metabolism and metabolism graphs
  • Personalized reduction plans
  • Sleep quality insights
  • Smart reminders and 'last call' notifications
  • Calendar view of caffeine habits
Features
Read full description

Decaf helps you take control of your caffeine intake with powerful tracking, personalized reduction plans, and real-time insights. Whether you want to sleep better, cut back on coffee, or simply understand your habits, Decaf gives you the tools to succeed. Core Features - Caffeine Tracking: Log coffee, tea, energy drinks, sodas, or custom beverages with ease - Real-time Metabolism Tracking: Visual graphs show how caffeine builds and tapers in your body throughout the day - Sleep Safe Sips: This is our unique algorithmic way of sharing what drinks are still 'available' to you within your daily caffeine budget - Favorite Brands: Track your favorite drinks, whether it be from Starbucks, Dunkin, etc or something custom you've created yourself - Calendar View: Color-coded monthly overview of your caffeine habits with green, yellow, and red days - Sleep Quality Insights: Correlation charts reveal how your caffeine intake affects your sleep patterns - Smart Reminders: Gentle nudges to log drinks and notifications for your optimal “last call” time Why Decaf Works - Better Sleep: Protect your nights by understanding how caffeine impacts rest and recovery - Reduced Anxiety: Cut back gradually to minimize withdrawal, jitters, and energy crashes - Data-Driven Insights: Connect daily intake with long-term patterns to make smarter choices - Visual Progress: See your improvement clearly with charts and calendar tracking - Personalized Approach: Decaf adapts to your lifestyle, sleep schedule, and reduction goals What Sets Decaf Apart Most caffeine apps stop at logging drinks. Decaf goes further with science-based tapering plans and real-time metabolism tracking, helping you reduce gradually while staying energized and avoiding uncomfortable withdrawal. Take control of your caffeine habits today and start feeling the benefits of better sleep, steadier energy, and improved focus with Decaf. Our privacy policy can be found here: https://www.brightwoodapps.com/legal/decaf/decaf-terms.html This application is licensed under the Apple Standard End User License Agreement (EULA).

Screenshots

Private Journal4 screens
Caffeine Tracker +4 screens

Verdict

The call

The clearest difference is monetization model: Caffeine Tracker + at freemium against Private Journal's subscription. Private Journal's advantage is update cadence (fortnightly vs every 3 months). On price, rating, ratings volume and ads 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. Private Journal sells 3 in-app purchases, starting at $1.99 per month and Caffeine Tracker + sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Private Journal against 5.0 for Caffeine Tracker +. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

UpkeepUpdate frequency

Private Journal ships an update fortnightly, Caffeine Tracker + every 3 months. The most recent releases landed on October 20, 2026 and October 8, 2026 respectively.

Scorecard2 real differences · 8 level
Private Journal versus Caffeine Tracker +: the parameters behind the verdict, then further details
ParameterPrivate JournalCaffeine Tracker +
PriceFreeFree
Rating5.0 (2 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings2 — better1
Update frequencyFortnightly — betterEvery 3 months
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFreemium — better
DevicesiPhone, iPad — betteriPhone
Requires iOS17.5 — better17.6
Further details — not scored
Size30 MB10 MB
Age rating12+4+
Developercorrelateencourage LLCBrightwood Apps LLC

Customer experience

Private Journal

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Caffeine Tracker +

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Private Journal

Subscriptions3
  • Monthly subscription7 Days trial$1.991 Month
  • Quarterly subscription7 Days trial$3.993 Months
  • Annual subscription7 Days trial$7.991 Year
2 purchases

Caffeine Tracker +

Subscriptions2
  • Pro Access | 1 Week3 Days trial$4.997 Days
  • Monthly Plan3 Days trial$9.991 Month

Questions

Is Private Journal free?
Private Journal is free to download, with in-app purchases available.
Is Caffeine Tracker + free?
Caffeine Tracker + is free to download, with in-app purchases available.
Which has better reviews, Private Journal or Caffeine Tracker +?
Private Journal and Caffeine Tracker + are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.
Do Private Journal or Caffeine Tracker + have ads?
Neither Private Journal nor Caffeine Tracker + shows ads.
Which is updated more often, Private Journal or Caffeine Tracker +?
Private Journal ships an update fortnightly, and Caffeine Tracker + every 3 months. Most recently, Private Journal was updated on October 20, 2026 and Caffeine Tracker + on October 8, 2026.

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