Comparison

Solid Diary vs Secure Planner

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

Head to head
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

About

Secure Planner

Features
Read full description

With Secure Planner, you can effortlessly create, manage, and organize your to-do lists. Set priorities and deadlines for individual tasks to enhance your productivity and keep track of important tasks. And all securely encrypted! The user-friendly dashboard and various graphics provide you with a clear overview of your progress. Track your daily tasks using the progress bar and quickly identify tasks with high priority that still need to be completed. Security is paramount with Secure Planner. The app employs reliable AES256 and TripleDES encryption combined along with PBKDF2 to securely store your to-do lists. All data remains fully offline, without any cloud connection. Additionally, Secure Planner is open source, giving you peace of mind knowing that your data is protected. Furthermore, Secure Planner offers features such as easy export and import of to-do lists, allowing you to share your data with others or synchronize it across different devices. Your data remains encrypted and safeguarded at all times.

Screenshots

Solid Diary4 screens
Secure Planner4 screens

Verdict

The call

The clearest difference is price: Solid Diary at Free against Secure Planner's $1.99. Secure Planner's advantage is in-app purchases (none vs 2) and update cadence (weekly vs every 2 months). On ads, device support and iOS requirement 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

Solid Diary is free to download; Secure Planner costs $1.99 up front. Solid Diary sells 2 one-off in-app purchases. Secure Planner asks for nothing beyond the download.

UpkeepUpdate frequency

Solid Diary ships an update every 2 months, Secure Planner weekly. The most recent releases landed on October 3, 2026 and October 11, 2026 respectively.

Scorecard3 real differences · 7 level
Solid Diary versus Secure Planner: the parameters behind the verdict, then further details
ParameterSolid DiarySecure Planner
PriceFree — better$1.99
Rating5.0 (26 ratings) — better—
Positive reviews86.4% of reviews—
Number of ratings26 — better—
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaid—
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS16.015.6 — better
Further details — not scored
Size44 MB23 MB
Age rating4+4+
DeveloperSolid Apps S.R.L.Christian Scheub

In-app purchases

2 purchases

Solid Diary

One-time2
  • Unlock this app (lifetime)$4.99
  • Unlock ALL 10 Solid Apps (lifetime)$9.99
None

Secure Planner

No in-app purchases

Questions

Is Solid Diary free?
Solid Diary is free to download, with in-app purchases available.
Is Secure Planner free?
Secure Planner costs $1.99, with no in-app purchases.
Do Solid Diary or Secure Planner have ads?
Neither Solid Diary nor Secure Planner shows ads.
Which is updated more often, Solid Diary or Secure Planner?
Solid Diary ships an update every 2 months, and Secure Planner weekly. Most recently, Solid Diary was updated on October 3, 2026 and Secure Planner on October 11, 2026.

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