Software Alternatives & Startups
Register | Login

Project Euler VS Locksy

Compare Project Euler VS Locksy and see what are their differences

Project Euler

Project Euler is a series of challenging mathematical/computer programming problems that will...

Project Euler Landing page
Rating
0 reviews
Pricing
Open source
Alternatives Is it good?
Locksy

Native iOS AI-powered teen social & time-sensitive messaging app. Timer starts on send — not when they open it. Secret Drops, Backroom, Smart Camera to handle messages & switching all media types & AI Remix for prompt-based photo & video remix.

Locksy screenshot
Rating
5.0 · 2 reviews
Pricing
Free Free trial
Alternatives Is it good?
Seranova
Seranova AI helps home service businesses automate review outreach, stay on top of customer conversations, and grow reputation without extra headcount. sponsored
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

Based on our record, Project Euler seems to be more popular. It has been mentioned 415 times since March 2021.

social mentions
415 vs 0
Online Learning popularity
100% vs 0%
alternatives listed
228 vs 53

Base details

Website, pricing, platforms and company facts side by side.

Project Euler
Locksy
Website projecteuler.net locksy.app
Pricing
Open source
Free Free trial
Company — Startup from the United States · 1 - 9 employees · 2026
Listed in
Online Learning Online Education Online Courses Programming +1
Social Networking AI AI Tools Chat Messaging Teen Chat Teen Teens Social Networks Social Media Mobile Apps iOS Apps +9

About Project Euler and Locksy

In their own words, as submitted to SaaSHub.

Project Euler
Locksy

No description of Project Euler yet.

Locksy is a native iOS, AI-powered teen social and messaging platform redefining how Gen Z connects, communicates, and creates. Built around a proprietary dual-sided countdown mechanic — the only app in the market where the timer starts the moment content is sent, not when the recipient opens it...

Read more about Locksy

Features and specs

What each product offers, as listed by its team.

Project Euler 6 features
Locksy 11 features
  • Problem-Solving Skills
    Project Euler offers a range of problems that can help enhance your mathematical and algorithmic problem-solving abilities.
  • Programming Practice
    It provides an excellent platform to practice and improve your programming skills across multiple languages.
  • Mathematical Insight
    Many problems require a deep understanding of mathematical concepts, thus helping users to gain and apply advanced mathematical knowledge.
  • Community
    Project Euler has a vibrant community where you can discuss problems and solutions with like-minded individuals.
  • Free Access
    All the problems and resources on Project Euler are freely accessible, making it an affordable way to learn.
  • Self-Paced Learning
    Users can progress at their own pace, making it suitable for learners of all levels.

Possible disadvantages

  • Steep Learning Curve
    The problems can become very challenging quickly, which might be discouraging for beginners.
  • Limited Step-by-Step Guidance
    There is little to no step-by-step guidance or hints available, which might hinder the learning process for some users.
  • Focus on Mathematics
    The heavy focus on mathematical problems may not appeal to those primarily interested in practical programming tasks.
  • Lack of Immediate Feedback
    The platform does not offer immediate feedback on code submissions, which might slow down the learning process.
  • No Built-in IDE
    Users need to use their own development environments, which might be inconvenient for some, especially beginners.
  • Secret Drop
    Time-locked multimedia messages that vanish forever if not unlocked before the countdown expires
  • Locksy AI Remix
    Prompt-based photo and video transformation built natively into the Drop flow — type it, watch it cook
  • Backroom
    Private ephemeral group rooms with configurable vanish timers — days, months, years, or permanent
  • Smart Camera
    Single-tap multimedia switching between photo, video, voice, and text without leaving the camera view — fully handles messages and notifications on the live camera screen
  • Dual-Sided Countdown
    Timer starts the moment content is sent, running simultaneously for both sender and recipient
  • Ephemeral Rooms
    Backroom spaces self-destruct on a user-defined schedule — the room itself vanishes, not just the content
  • Hybrid Remote Timer
    Countdown runs for both sides in real time regardless of whether the recipient has opened the app
  • Multimedia Drops
    Send photos, video clips, voice notes, or text messages — all formats supported as Secret Drops
  • Friends Don't Need the App
    Send Secret Drops to anyone — the countdown starts instantly regardless of whether they have Locksy
  • Golden Lock
    Premium subscription tier unlocking unlimited drops, verification, and screenshot protection
  • School Map
    Dynamic school discovery system and map — users search, locate, and add their school, grade, and class to their profile, connecting with their real-world circle

Analysis

An editorial look at what each product does well and who it suits.

Project Euler
Locksy

Overall verdict

  • Yes, Project Euler is considered a beneficial tool for those interested in improving their problem-solving abilities and programming skills. It offers a wide variety of problems that range in difficulty and provide valuable insights into the application of mathematical and computational concepts.

Why this product is good

  • Project Euler is a website dedicated to a series of challenging mathematical and computational problems. It is aimed at people interested in learning more about computer science, mathematics, algorithm design, and programming. The problems encourage you to think deeply about efficient algorithms and solutions. It also fosters the development of problem-solving skills and the enhancement of coding skills.

Recommended for

  • Individuals interested in competitive programming
  • Students studying computer science or mathematics
  • Professionals seeking to improve their algorithmic thinking
  • Anyone interested in challenging themselves with mathematical problems
  • Educators looking for challenging problems to test their students

Overall verdict

  • I don't have verified, up-to-date information about Locksy (locksy.app) to make a reliable assessment of its quality, features, or reputation. I'd recommend researching directly through reviews, the official website, and user feedback before making a decision.

Why this product is good

  • Insufficient verified data available about this specific product or service
  • Unable to confirm current features, pricing, or user satisfaction levels
  • Cannot verify company legitimacy, security practices, or customer support quality without direct research

Recommended for

  • Users who conduct their own due diligence by checking recent reviews on trusted platforms
  • Those who verify app permissions and security certifications independently
  • Individuals who test any password/security app's free tier before committing to paid plans
  • Users who check the app's privacy policy and data handling practices firsthand

Videos

Walkthroughs and reviews on video.

Project Euler 2 videos + Add
Locksy 3 videos + Add

Project Euler Challenges 1–4 - Coding Challenges with Florin

More videos

  • Review - Project Euler Challenges 5–12 - Coding Challenges with Florin

Secret Drops. Backroom. AI Remix. Welcome to Locksy.

More videos

  • Demo - Your Message. Their Heart Racing. One Chance to Open It.
  • Demo - The App Where the Clock Starts the Second You Hit Send - Locksy

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
Project Euler
Locksy
100% 100%
Online Learning
0% 0%
0% 0%
Social Networks
100% 100%
100% 100%
Online Education
0% 0%
0% 0%
Chat
100% 100%

Questions & Answers

As answered by people managing Project Euler and Locksy.

What makes your product unique?

Locksy's answer:

Locksy is the only app where the countdown starts the moment content is sent — not when the recipient opens it. This dual-sided, send-triggered countdown mechanic runs simultaneously for both sender and recipient, creating a live shared event that vanishes forever if not unlocked in time. No other social or messaging app has shipped this mechanic. Combined with a single-tap multimedia switching Smart Camera, private ephemeral Backroom rooms, a dynamic school discovery system, and Locksy AI Remix — a native prompt-based photo and video transformation layer built directly into the Drop flow — Locksy represents a fundamentally different architecture for teen social communication.

Why should a person choose your product over its competitors?

Locksy's answer:

Most social apps are built for permanence — feeds, archives, and content that lives forever. Locksy is built for moments. Unlike Snapchat, Instagram, or BeReal, Locksy's timer starts the second content is sent rather than when it is opened, making every message a live, urgent, shared experience rather than a passive notification. Friends don't need the app to receive a Secret Drop. Backroom spaces are themselves ephemeral — the room vanishes, not just the content. And Locksy AI Remix transforms any photo or video clip with a free-text prompt natively inside the Drop flow, with no preset filters or templates. Locksy is free always, available exclusively in the United States, and built natively on iOS.

How would you describe the primary audience of your product?

Locksy's answer:

Locksy's primary audience is Gen Z teens aged 13 to 18 in the United States. The platform is specifically designed for the generation that has grown up on social media and is actively moving away from public feeds, permanent content, and performative posting toward private, intimate, real-time communication with close friends. Locksy's school discovery system allows users to find and connect with their real-world circle by school, grade, and class, reinforcing its focus on genuine peer connection rather than follower counts or public audiences.

What's the story behind your product?

Locksy's answer:

Locksy was built on a single observation: the foundational mechanic of every major social app — the timer starting when someone opens a message — creates the illusion of urgency without the reality of it. Locksy's founders set out to fix the actual mechanic. By starting the countdown the moment content is sent, running simultaneously for both sides regardless of when the recipient opens the app, Locksy turns every message into a genuinely live, shared event. Built natively in Swift by a powerhouse team headquartered in the heart of Silicon Valley, Locksy launched exclusively in the United States and has since shipped Secret Drops, Backroom ephemeral rooms, the Locksy Smart Camera, and Locksy AI Remix — the first native AI creative layer built directly into a social app's core Drop flow.

Which are the primary technologies used for building your product?

Locksy's answer:

Locksy is built natively in Swift using Xcode, running exclusively on iOS and leveraging Apple's native frameworks throughout. The platform is engineered for speed — every component of the experience, including Locksy AI Remix, is designed to operate fast enough to keep pace with a live countdown mechanic. Locksy AI Remix supports both photo and video clip transformation through a free-text prompt interface, with no preset filters or templates required. Voice prompt input is also supported, allowing users to describe their transformation by speaking rather than typing.

Who are some of the biggest customers of your product?

Locksy's answer:

Locksy's primary users are teenagers aged 13 to 18 across the United States, with particular traction among high school students who use the platform to communicate within their existing real-world social circles. The school discovery system allows students to connect by school, grade, and class, meaning Locksy's user base is naturally organized around real institutions rather than algorithmic networks. As a consumer social platform, Locksy does not publish individual user or institutional data.

User comments

Share your experience with using Project Euler and Locksy. For example, how are they different and which one is better?

Log in or Post with

Reviews and articles

External articles and on-site reviews we used to compare the two products.

Project Euler no reviews yet
Locksy 5.0 · 2 reviews

Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

Project Euler 415 mentions
Locksy 0 mentions
  • Fast Factorial Algorithms
    Let's hope this is going to help me solve some more Project Euler [1] problems! [1] https://projecteuler.net/. - Source: Hacker News / 4 months ago
  • I Miss Thinking Hard
    Https://projecteuler.net/ for "Thinker" brain food. (it still has the issue of not being a pragmatic use of time, but there are plenty interesting enough questions which it at least helps). - Source: Hacker News / 7 months ago
  • A simple leaderboard changed player behavior in my puzzle game
    I have a Project Euler (https://projecteuler.net/) account. Though I do not register at all on the leader board I will sometimes work obsessively on a problem just to make one of the level icons light up for me. There is not really... - Source: Hacker News / 9 months ago

View more

Tracking Locksy since Jul 2026.

Alternatives to Project Euler and Locksy

When comparing Project Euler and Locksy, you can also consider the following products.

Loading...