AstraPixels vs Tell Me When Down
Comprehensive feature analysis, ratings breakdown, platform compatibility, and community review comparison.
AstraPixels
A pixel-art solar system at its real current positions.
Detailed Feature Comparison Matrix
Compare Other Tools| Dimension | AstraPixels |  Tell Me When Down |
|---|---|---|
| Primary Category | Web App | Web App |
| Community Rating | No ratings(0 reviews) | No ratings(0 reviews) |
| Community Upvotes | 278 votes | 6 votes |
| Supported Platforms | Web | Web |
| Tags & Focus | #Web App#Advertising#Art | #Developer Tools#SaaS#Web App#YouTube |
| Maker / Company | Independent Developer | Independent Developer |
| Platform Verification | Community Listing | Community Listing |
About AstraPixels
AstraPixels is a captivating animated, pixel-art map of the solar system that displays every celestial body at its real, current position. Rather than relying on copied lists, positions are dynamically computed directly from published orbital elements. Users can seamlessly zoom in and out from the blazing Sun all the way out to the distant Kuiper belt, exploring a rich catalog of 171 catalogued objects complete with sourced facts.
In addition to educational exploration and tracking what the night sky will do over the next six months, AstraPixels introduces a unique ownership feature. Every rock in the system is available for purchase: users can claim an asteroid for just $5, keep it forever, and assign it a custom name of their choice. Please note that names assigned here appear exclusively on AstraPixels and do not serve as official IAU designations.
Pros of AstraPixels
- Accurately positioned celestial bodies computed from published orbital elements
- Charming, nostalgic pixel-art aesthetic with smooth zooming from the Sun to the Kuiper belt
- Comprehensive database of 171 catalogued objects featuring sourced facts
- Interactive sky tracking showing celestial movements for the next six months
- Fun, affordable asteroid naming feature allowing users to claim a rock for $5
Cons of AstraPixels
- Custom asteroid names are exclusive to AstraPixels and do not constitute official IAU designations
- Limited to 171 catalogued objects mentioned in the current database scope
- Web-based application reliant on an internet connection
Frequently Asked Questions
What is AstraPixels?
AstraPixels is an animated, pixel-art map of the solar system where every celestial body is displayed at its real current position, computed directly from published orbital elements.
How are the positions of the celestial bodies calculated?
The positions are computed directly from published orbital elements rather than simply being copied from a static list.
Can I buy an asteroid on AstraPixels?
Yes! Every rock in the system is for sale. You can claim an asteroid for $5, keep it forever, and name it whatever you like.
Are names given on AstraPixels official designations?
No. A name given on AstraPixels is shown exclusively on the platform and is not an official International Astronomical Union (IAU) designation.
About Tell Me When Down
Tell Me When Down is an uptime monitoring and security scanning tool specifically designed for solo founders and developers building with AI agents. Rather than just checking if a URL responds, it monitors your application across three distinct operational depths to ensure both availability and safety.
The platform inspects your project through three layers:
- Public URL Scan: A free security scan evaluating your public domain for SSL issues, response headers, DNS configuration, and domain spoofing risks.
- GitHub Code Scan: A read-only GitHub App that analyzes your codebase to detect known vulnerabilities (CVEs) and leaked secrets.
- SDK Integration: Deep monitoring for critical backend components, including databases, Stripe webhooks, and background cron jobs.
With 60-second uptime checks and plain-English alerts, Tell Me When Down simplifies maintenance. Instead of requiring deep security expertise, every issue detected comes with a pre-formatted fix. Users can simply click "Copy for your AI tool" to feed the precise resolution directly into the AI coding agent used to build the application.
Pros of Tell Me When Down
- Monitors applications across three layers: public URL, code repository, and backend SDK
- Provides 60-second interval uptime checks with clear, plain-English alerts
- Includes a 'Copy for your AI tool' feature to effortlessly pass fixes to AI coding agents
- Offers a free public URL security scan for SSL, headers, DNS, and spoofing risks
Cons of Tell Me When Down
- Requires installing a GitHub App and integrating an SDK for deep code and backend monitoring
- Designed primarily for solo founders and simple workflows rather than large enterprise teams
Frequently Asked Questions
What is Tell Me When Down?
Tell Me When Down is an uptime monitoring and website security scanning tool built for solo founders. It monitors public URLs, code repositories, and backend services, providing plain-English alerts and ready-to-paste fixes.
What are the three depths of monitoring?
The tool scans public URLs (SSL, headers, DNS, and spoofing), connects via a read-only GitHub App to detect CVEs and leaked secrets in code, and uses an SDK to monitor databases, Stripe webhooks, and cron jobs.
How often are uptime checks performed?
Tell Me When Down performs uptime checks every 60 seconds.
How does the 'Copy for your AI tool' feature work?
Every security finding or issue comes with a prepared fix. Clicking 'Copy for your AI tool' copies formatted instructions that you can paste directly into the AI agent that helped build your app.