Comparison

LetsDefend vs Stillvaro

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

Head to head
About

LetsDefend

Learn cybersecurity with interactive courses and hands-on simulations. Protect against digital threats, join a global community, and advance your career. Master threat detection and analysis with expert guidance.

Highlights
  • Interactive cybersecurity courses
  • Hands-on threat simulations
  • Threat detection tools and techniques
  • Community and expert support
  • Customizable learning paths
  • Mobile learning platform
Read full description

Start learning the art of cybersecurity with LetsDefend, the leading brand designed to elevate your expertise on the go! Developed by cybersecurity experts, LetsDefend offers comprehensive interactive courses and hands-on simulations, empowering you to effectively protect against digital threats. Join a vibrant community of cybersecurity learners worldwide, enhancing your skills, boosting your career, and learning to safeguard against cyber threats through LetsDefend’s immersive, user-friendly courses. Ready to kick-start your cybersecurity journey? What LetsDefend Offers You • In-Depth Cybersecurity Modules – Immerse yourself in detailed, structured courses tailored for aspiring and experienced cybersecurity professionals. Get hands-on with real-world threat scenarios and simulations for practical learning. • Real-World Threat Simulations – Build confidence and skills with simulations that mirror real-world cyber-attacks. Begin right away with practical exercises designed to solidify your understanding from the get-go. • Tools and Techniques for Threat Detection – Learn about and use the latest tools for identifying and analyzing cybersecurity threats. LetsDefend ensures you’re up to speed with the skills essential for modern cybersecurity practices. • Community and Expert Support – Stuck on a problem? Access prompt support from our cybersecurity community or consult our in-app virtual assistant for expert guidance on any challenge you face. • Customizable Learning Path – Tailor-made to fit your pace and expertise, LetsDefend offers a personalized learning experience that aligns with your career goals and learning preferences. Progress through lessons that adapt to your journey. • Learn Anytime, Anywhere – Take your cybersecurity training with you wherever you go. With LetsDefend’s mobile learning platform, keep expanding your knowledge and skills no matter where you are. • Science-Driven Learning Methodology – Our educational approach combines theoretical instruction with practical application, maximizing retention and ensuring skills are cemented through real-world application. Why Cyber Learners Love LetsDefend • Engaging, practice-based cybersecurity lessons • A straightforward, intuitive learning process • Diverse array of focused cybersecurity topics • Perfectly suited for newcomers and professionals Contact Us For questions or feedback, feel free to reach out to us at support@letsdefend.io

About

Stillvaro

Features
Read full description

Memorize the digits of π. Four digits at a time. In Stillvaro, every group of four digits draws a glyph on a circular dial. Follow its shape, try the digits from memory, then connect them to the next group. Build a sequence through touch, repetition, and recall. FOUR DIGITS. ONE GLYPH. Start with 3141, including pi’s leading 3. Guide highlights the next digit as the shape forms. Switch to Memory to recall it yourself. Connect smaller groups into passages of eight and sixteen. SEE WHAT NEEDS ANOTHER LOOK Learning trends brings recall, guidance, and slips into focus. Compare saved snapshots, see how individual groups are going, and find the digit positions where you have made mistakes. Your practice has a history you can explore. WATCH THE PATTERN UNFOLD Let Watch draw the sequence for you. Choose your pace and repetitions, start from your current group or the beginning, and return to your saved practice whenever you are ready. MAKE THE NEXT CONNECTION Practice brings earlier groups back as you learn. Reviews respond to your recall, mistakes, and use of help. Explore pi in groups of four, eight, or sixteen, and choose where to practice. STEP BACK AND SEE THE SPIRAL Open the Memory Spiral to follow your journey or explore more of pi. Play the sequence, pause to pan and zoom, or fit the whole spiral into view. SEE HOW FAR YOU GET Take a memory test with no hints and no timer. Your uninterrupted score counts complete groups before the first mistake. Finish whenever you like and return to your saved practice place. MORE ROOM ON IPAD A native workspace brings the dial and sequence side by side when there is room. Rotate or resize one app window while keeping your entered digits in place. In wide landscape windows, choose whether the dial sits on the left or right. A QUIET CHALLENGE, AT YOUR PACE Tap a digit, or drag to it and pause. Undo your latest entry before the group is complete. Choose light or dark appearance and optional haptics. Your place and practice history save automatically on your device. Works offline. No account, ads, subscriptions, or in-app purchases. Designed for iPhone and iPad. Requires iOS 26 or iPadOS 26 or later.

Screenshots

LetsDefend4 screens
Stillvaro4 screens

Verdict

The call

The clearest difference is in-app purchases: Stillvaro at none against LetsDefend's 2. Stillvaro also leads on ads (none vs shown) and update cadence (every 3 days vs every 2 weeks). LetsDefend's advantage is iOS requirement (15.6 vs 26.0). On price 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. LetsDefend sells 2 in-app purchases, starting at $12.99 per month. Stillvaro asks for nothing beyond the download.

UpkeepUpdate frequency

LetsDefend ships an update every 2 weeks, Stillvaro every 3 days. The most recent releases landed on October 20, 2026 and October 17, 2026 respectively.

Scorecard4 real differences · 6 level
LetsDefend versus Stillvaro: the parameters behind the verdict, then further details
ParameterLetsDefendStillvaro
PriceFreeFree
Rating4.0 (2 ratings) — better—
Positive reviews9.1% of reviews—
Number of ratings2 — better—
Update frequencyEvery 2 weeksEvery 3 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better26.0
Further details — not scored
Size98 MB6 MB
Age rating4+4+
DeveloperLetsDefendMark Olson

Bugs and requests

LetsDefend

Reported bugs

3 issues
  • Login credentials not working in app
  • App not recognizing VIP subscription
  • Ads blocking progress through content

Requested features

2 requests
  • Ability to log in with existing accounts
  • Seamless integration between app and website

Stillvaro

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

LetsDefend

Subscriptions2
  • VIP+14 Days trial$12.991 Month
  • VIP+ Annual14 Days trial$89.991 Year
None

Stillvaro

No in-app purchases

Questions

Is LetsDefend free?
LetsDefend is free to download, with in-app purchases available.
Is Stillvaro free?
Stillvaro is free to download, with no in-app purchases.
Do LetsDefend or Stillvaro have ads?
LetsDefend shows ads; Stillvaro does not.
Which is updated more often, LetsDefend or Stillvaro?
LetsDefend ships an update every 2 weeks, and Stillvaro every 3 days. Most recently, LetsDefend was updated on October 20, 2026 and Stillvaro on October 17, 2026.

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