Comparison

Seneca Letters vs Mastermind

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

Head to head
About

Seneca Letters

Explore the wisdom of ancient Stoicism with "Moral Letters to Lucilius." This offline app offers 124 letters from Seneca, providing guidance for a morally correct life. Save favorites and take notes with export functionality.

Highlights
  • 124 "Moral Letters to Lucilius"
  • Primary source of Stoicism
  • Offline access
  • Minimalistic design
  • Favorites list
  • Note-taking with export
Features
Read full description

The application contains a treatise by Seneca "Moral Letters to Lucilius" - the result of the life reflections of the famous ancient Roman Stoic philosopher Seneca. Seneca is an outstanding Roman Stoic philosopher, poet, playwright, statesman, one of the largest representatives of Stoicism. This is probably the most widely read work by Seneca. Written in simple and wise language, the letters can still serve as a guide to a morally correct life today. The application is made for those who want to get acquainted with the primary source of the popular philosophical school of Stoicism today. The application contains 124 letters for all occasions. The application allows you to create a list of favorites letters and take notes with the ability to export. «Seneca Letters» is an offline application designed in a minimalistic style and does not contain ads.

About

Mastermind

This app offers a sanctuary for mental well-being, providing curated exercises to reduce anxiety, alleviate depression, and conquer insomnia. Explore tailored categories and a comprehensive exercise collection to nurture your mind and reclaim joy.

Highlights
  • Anxiety reduction exercises
  • Depression alleviation tools
  • Insomnia relief techniques
  • Guided meditations
  • Mindful breathing exercises
  • Mood-boosting activities
  • Sleep improvement rituals
Features
Read full description

Welcome to Mastermind – your ultimate companion for cultivating a healthier mind and a more enjoyable life. Designed with care and expertise, Mastermind offers a sanctuary of solace where individuals can embark on a transformative journey towards: - Reducing anxiety - Alleviating depression - Conquering insomnia. Dive into our curated collection of exercises meticulously crafted to nurture your mental well-being. Explore three distinct categories tailored to address the unique challenges of anxiety, depression, and insomnia. With each category thoughtfully designed to offer a comprehensive approach to mental wellness, Mastermind empowers you to take charge of your emotional health and reclaim joy in everyday living. In the Anxiety Relief category, discover a sanctuary of serenity where stress melts away and tranquility takes center stage. Unwind with calming meditations, soothe your mind with mindful breathing exercises, and find peace amidst life's chaos with relaxation techniques proven to soothe frazzled nerves. In the Depression Relief category, find solace and support as you navigate the complexities of mood and emotion. Engage in mood-boosting exercises, practice self-compassion through journaling prompts, and foster resilience with activities designed to inspire hope and positivity in times of darkness. In the Sleep Improvement category, embark on a journey towards restful nights and rejuvenated mornings. Establish healthy sleep habits with bedtime rituals, unwind with guided sleep meditations, and create a sleep-friendly environment conducive to blissful slumber and vibrant awakenings. But that's not all. With our All Exercises category, the possibilities are endless. Explore, experiment, and discover the exercises that resonate most with you. Tailor your experience to suit your unique needs and preferences, and watch as your mind blossoms and your life transforms. Join us on this empowering quest to nurture your mental health, embrace joy, and cultivate a life of fulfillment and vitality. Download Mastermind today and embark on a journey towards a healthier mind and a brighter tomorrow. Secure & Private Your privacy is important. All data is securely stored and encrypted. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Seneca Letters4 screens
Mastermind4 screens

Verdict

The call

The clearest difference is in-app purchases: Mastermind at none against Seneca Letters's 3. Mastermind also leads on update cadence (daily vs weekly) and iOS requirement (13.4 vs 16.4). On price, review sentiment, ads 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. Seneca Letters sells 3 one-off in-app purchases. Mastermind asks for nothing beyond the download.

UpkeepUpdate frequency

Seneca Letters ships an update weekly, Mastermind daily. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard4 real differences · 6 level
Seneca Letters versus Mastermind: the parameters behind the verdict, then further details
ParameterSeneca LettersMastermind
PriceFreeFree
Rating—4.5 (6 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings—6 — better
Update frequencyWeeklyDaily — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhoneiPhone, iPod — better
Requires iOS16.413.4 — better
Further details — not scored
Size10 MB27 MB
Age rating4+4+
DeveloperVolodymyr StarovoitenkoElvis Baltais

Customer experience

Seneca Letters

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Mastermind

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Seneca Letters

One-time3
  • Great support$0.99
  • Mega support$3.99
  • Super support$8.99
None

Mastermind

No in-app purchases

Questions

Is Seneca Letters free?
Seneca Letters is free to download, with in-app purchases available.
Is Mastermind free?
Mastermind is free to download, with no in-app purchases.
Do Seneca Letters or Mastermind have ads?
Neither Seneca Letters nor Mastermind shows ads.
Which is updated more often, Seneca Letters or Mastermind?
Seneca Letters ships an update weekly, and Mastermind daily. Most recently, Seneca Letters was updated on November 3, 2026 and Mastermind on November 4, 2026.

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