Comparison

Uptime Koala vs Shellter

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

Head to head
About

Uptime Koala

Features
Read full description

WHAT IS THIS? Mobile companion app for the open-source Uptime Monitor platform. Monitor your websites and services with real-time push notifications when they go down. KEY FEATURES - Real-time push notifications for downtime events - View all monitors and their status at a glance - Interactive response time charts - Uptime analytics (24h, 7d, 30d periods) - Detailed incident logs - Secure passwordless OTP authentication GETTING STARTED 1. Download this app and sign in 2. Set up monitors from the web dashboard or app 3. Get instant alerts on your phone TWO WAYS TO USE - Cloud: Use our hosted version at uptimemonitor.screenapp.io โ€” no setup required, get started instantly. - Self-hosted: Deploy your own backend for full control over your data and infrastructure. GitHub: https://github.com/screenappai/uptime-monitor PERFECT FOR DevOps engineers, system administrators, web developers, and IT teams who need mobile access to their uptime monitoring. OPEN SOURCE Fully open-source project. Self-host or use the cloud. MIT licensed. GitHub: https://github.com/screenappai/uptime-monitor Privacy Policy: https://screenapp.io/help/privacy-policy Terms of Service: https://screenapp.io/help/terms-and-conditions

About

Shellter

A local-only client for SSH, SFTP, and FTP connections. It offers a real terminal experience, secure file management, and robust host key verification, all without requiring accounts or sending user data.

Highlights
  • Real interactive terminal with xterm rendering
  • SFTP/FTP file browsing, upload, and download
  • Host key pinning for secure SSH connections
  • Secure storage of passwords and private keys
  • Local-only operation with no account needed
Features
Read full description

Shellter is an SSH, SFTP and FTP client that keeps everything on your phone. There is no account to create, nothing syncs, and the app sends no telemetry. It opens connections to the servers you type in, and makes no other network request. That is the whole product. A REAL TERMINAL โ€” An interactive shell rendered with xterm, not a toy console. It follows the keyboard, resizes the remote PTY when you rotate the phone, and keeps 10,000 lines of scrollback FILES WITHOUT A SECOND LOGIN โ€” Browse, upload, download, rename, delete and create folders over SFTP or FTP. Open the file browser from inside a live SSH session and it reuses that connection instead of opening another one. A download never silently overwrites a file you already have. HOST KEYS, PINNED AND CHECKED โ€” The server's host key is pinned the first time you connect and compared on every reconnect. If it does not match, the connection stops BEFORE authentication โ€” your password is never sent to a server that failed the check. WHERE YOUR SECRETS LIVE โ€” Passwords and private keys go into the iOS Keychain, hardware-backed where supported, stored "this device only" so they cannot be restored onto another phone. HONEST ABOUT PROTOCOLS โ€” SSH and SFTP are verified by host-key pinning. FTPS is encrypted but does not verify the certificate. FTP is cleartext. Prefer SFTP.

Screenshots

Uptime Koala4 screens
Shellter4 screens

Verdict

The call

The clearest difference is iOS requirement: Uptime Koala at 13.0 against Shellter's 15.0. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference ยท 7 level
Uptime Koala versus Shellter: the parameters behind the verdict, then further details
ParameterUptime KoalaShellter
PriceFreeFree
Positive reviewsโ€”100.0% of reviews
Update frequencyEvery 2 weeksโ€”
AdsNoNo
In-app purchasesNoNo
Monetizationโ€”Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 โ€” better15.0
Further details โ€” not scored
Size20 MB21 MB
Age rating4+4+
DeveloperScreenAppBlocify LLC

In-app purchases

None

Uptime Koala

No in-app purchases

None

Shellter

No in-app purchases

Questions

Is Uptime Koala free?
Uptime Koala is free to download, with no in-app purchases.
Is Shellter free?
Shellter is free to download, with no in-app purchases.
Do Uptime Koala or Shellter have ads?
Neither Uptime Koala nor Shellter shows ads.

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