Comparison

AI Journal & Diary vs Solid Diary

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

Head to head
About

AI Journal & Diary

This app offers a private AI-powered notebook for writing, reflection, and idea organization. It features unique AI companions that provide insights based on your entries, with a strong emphasis on user privacy and security through end-to-end encryption and on-device storage. It automatically categorizes notes and tracks mood and themes.

Highlights
  • AI companions for insights
  • 100% private and secure on-device storage
  • Freeform writing with AI suggestions
  • Automatic mood and theme tracking
  • Smart note organization and search
  • Follow-up questions and pattern discovery
Features
Read full description

Reflectr: Private AI Notebook & Journal Your private space for writing, reflection, and smart support. Reflectr is your personal AI-powered notebook - a secure space to write thoughts, capture ideas, and make sense of your mind with help from intelligent AI companions. Whether you're jotting notes, organizing ideas, reflecting on your day, or simply thinking out loud - Reflectr gives you calm, clarity, and control. Why Reflectr? AI Companions Who Think Differently Talk to unique AI personalities like the Optimist, Philosopher, Realist, and more. They read your entries and offer helpful insights, questions, or reflections — like having a thoughtful friend for every mood. 100% Private & Secure Everything stays on your device and is end-to-end encrypted. Lock your notebook with passcode or Face ID. No cloud syncing, no tracking — just real privacy. Freeform Writing with Smart Support Write freely and naturally. Use AI suggestions to clean up tone, simplify thoughts, or reword your posts — or just ask questions about what you wrote. Mood & Insight Tracking Reflectr automatically detects your mood and themes from each entry, then shows emotional trends over time — no extra effort required. Smart Organization, Zero Hassle Notes are automatically categorized into journals, reflections, reminders, goals, and more. Search by tag, theme, or tone with ease. Built to Think With You Ask follow-up questions about your past posts, uncover patterns, and deepen your understanding of what matters to you. Write. Think. Reflect. Your thoughts aren’t just text — they’re the start of a deeper conversation. Download Reflectr and start exploring your mind, securely and intelligently. Privacy Policy: https://www.dailylabs.net/privacy-policy Terms of Service: https://www.dailylabs.net/terms-of-service EULA: http://www.apple.com/legal/itunes/appstore/dev/stdeula

About

Solid Diary

This private journal app offers AI-powered insights into your thoughts and emotions. Secure your entries with encryption and biometric locks. Organize your reflections with formatting, tags, and unlimited uploads of images, voice, and sketches.

Highlights
  • 100% private and encrypted diary
  • AI analysis for deeper insights
  • Unlimited image, voice, and sketch uploads
  • Formatting and tagging for organization
  • Customizable themes
  • Stats and achievements
Features
Read full description

No subscriptions - Buy once, keep forever End your day with a moment of calm reflection. Solid Diary is more than just a journal app - it could be your sanctuary. Dive deep into your thoughts, and with the unique AI analysis, reveal deeper insights into yourself and the complex world around us. - 100% private diary What you write about in Solid Diary is for your eyes only. This diary is designed with privacy in mind and this is why your data is encrypted and only you can access it. You can also lock your diary with a biometric lock. - AI analysis Keeping a diary is a great way to explore your thoughts and better understand your emotions. But when you need an extra opinion, you can ask for an AI analysis and get a deeper understanding of the meaning behind your writing. - Unlimited uploads You can upload as many images, voice recordings and sketches as you need - Formatting and tags You can apply various formatting options to each entry and stay organized with tags. - Themes Solid Diary supports 4 different themes so you can pick the one that suits your style most. - Stats and achievements To make keeping a diary even more fun, there are achievements and stats that you unlock on your journey. Are you ready to start keeping your diary? Solid Diary is a universal app available on iOS, iPadOS, and macOS You can choose to unlock just this app or all 5 Solid Apps with one purchase Terms of service: http://solidapps.co/terms.html Privacy policy: http://solidapps.co/privacy.html

Screenshots

AI Journal & Diary4 screens
Solid Diary4 screens

Verdict

The call

The clearest difference is update cadence: AI Journal & Diary at weekly against Solid Diary's every 2 months. AI Journal & Diary also leads on review sentiment (100% vs 86%) and monetization model (freemium vs paid). 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. AI Journal & Diary sells 5 in-app purchases, starting at $4.99 per month and Solid Diary sells 2 one-off in-app purchases. 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 — 4.9 for AI Journal & Diary against 5.0 for Solid Diary. Both are backed by a comparable volume of ratings — 31 and 26 respectively. Written reviews are what separate them: 100% of AI Journal & Diary's written reviews are positive against 86% of Solid Diary's.

UpkeepUpdate frequency

AI Journal & Diary ships an update weekly, Solid Diary every 2 months. The most recent releases landed on October 6, 2026 and October 12, 2026 respectively.

Scorecard4 real differences · 6 level
AI Journal & Diary versus Solid Diary: the parameters behind the verdict, then further details
ParameterAI Journal & DiarySolid Diary
PriceFreeFree
Rating4.9 (31 ratings)5.0 (26 ratings) — better
Positive reviews100.0% of reviews — better86.4% of reviews
Number of ratings31 — better26
Update frequencyWeekly — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS13.0 — better16.0
Further details — not scored
Size179 MB44 MB
Age rating12+4+
DeveloperDaily Labs, LLCSolid Apps S.R.L.

Customer experience

AI Journal & Diary

All ratings31 ratings
Positive96.8%
Neutral0.0%
Negative3.2%
Written reviews8 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Solid Diary

All ratings26 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews22 reviews
Positive86.4%
Neutral0.0%
Negative13.6%

In-app purchases

5 purchases

AI Journal & Diary

Subscriptions4
  • Premium Plan Monthly$4.991 Month
  • Premium Plus Monthly Plan$4.991 Month
  • Premium Plan$29.991 Year
Show 1 more
  • Premium Plus Plan3 Days trial$29.991 Year
One-time1
  • Premium Plus Lifetime$79.99
2 purchases

Solid Diary

One-time2
  • Unlock this app (lifetime)$4.99
  • Unlock ALL 10 Solid Apps (lifetime)$9.99

Questions

Is AI Journal & Diary free?
AI Journal & Diary is free to download, with in-app purchases available.
Is Solid Diary free?
Solid Diary is free to download, with in-app purchases available.
Which has better reviews, AI Journal & Diary or Solid Diary?
Solid Diary is rated higher. AI Journal & Diary averages 4.9 out of 5 from 31 ratings, while Solid Diary averages 5.0 from 26 ratings.
Do AI Journal & Diary or Solid Diary have ads?
Neither AI Journal & Diary nor Solid Diary shows ads.
Which is updated more often, AI Journal & Diary or Solid Diary?
AI Journal & Diary ships an update weekly, and Solid Diary every 2 months. Most recently, AI Journal & Diary was updated on October 6, 2026 and Solid Diary on October 12, 2026.

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