DevTools+ vs Last Seen Up

496 developer tools, ready on iPhone and iPad. DevTools+ puts everyday code utilities in one searchable app. Format JSON, test APIs, inspect regex, decode JWTs, encode Base64, generate UUIDs, convert timestamps, format SQL, and handle hundreds of other development tasks without jumping between random websites. FIND THE RIGHT TOOL FAST - Search all 496 tools across 29 categories - Pin favorites and reopen recent tools - Start with practical examples - Copy and share results - Keep supported history, snippets, and API work organized FORMAT AND CONVERT - JSON formatter, validator, minifier, tree view, sort, and escape - JSON to YAML, CSV, XML, TypeScript, and Java - XML, YAML, TOML, CSV, Markdown, SQL, and text utilities DECODE AND INSPECT - JWT decoder and analysis tools - Base64 encoder and decoder - URL, HTML, Unicode, hexadecimal, and character encoding tools - Hash, HMAC, password, certificate, header, and security helpers - Timestamp, timezone, cron, MIME type, port, and HTTP status references BUILD AND TEST - API tester and REST, GraphQL, cURL, header, and WebSocket helpers - Regex tester, match highlighter, replace, and reference tools - UUID, random data, mock payload, barcode, and QR generators - Git, CSS, React Native, testing, documentation, file, and log utilities LOCAL-FIRST BY DESIGN Most tools process directly on your device. Tools that need a network connection are clearly identified. Nothing you enter is sent anywhere unless the selected tool requires a network request. NO ACCOUNT REQUIRED Open the app and start working. A useful selection of tools is free. DevTools+ Pro unlocks the complete toolkit and removes ads. Built for developers, QA engineers, API testers, students, and technical teams who want a focused utility on their phone. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Know the moment it stops answering. Last Seen Up watches your servers, sites, queues and cron jobs, and wakes you when something stops responding. Checks run on our servers around the clock, so the alert reaches you whether or not your phone is awake. ONE GLANCE, ONE ANSWER Open the app and the dashboard tells you in a single line whether everything is fine. When something is down, the dashboard becomes the incident: how long it has been down, what failed, a countdown to the next escalation step, and Acknowledge right there. Thirty days of history and upcoming renewals sit underneath. ADD ANYTHING BY PASTING IT Paste a website, an IP address or a host and port, and Last Seen Up works out what kind of check it needs and tests it while you type. A website is one monitor, not three: we check that it answers and keep an eye on its SSL certificate and domain registration, so the renewal you forgot is a reminder weeks out instead of an outage on a Saturday. CATCH THE JOBS THAT DIDN'T RUN A cron job that stops running fails silently. Give it a heartbeat URL to call when it finishes, and if the call never comes we tell you. The alert shows the last several runs at a glance, so a job that has been failing every other night for a week looks different from one that broke tonight. WILL IT ACTUALLY WAKE YOU? "Can we wake you?" checks whether this iPhone will really ring at 3am, and opens the right setting to fix anything that would stop it. Send yourself a test alert, or have us call you, to be sure. ALERTS BUILT FOR 3AM Alerts arrive as Time Sensitive notifications, so they break through a Focus. Long-press one to see how long it has been down and what failed, then acknowledge or snooze without opening the app. If nobody answers, escalation moves to the next person on your list, and the last step can be an actual phone call to a number you have verified. Quiet hours and do not disturb keep the rest of the night yours. ANYONE CAN SAY "I'M ON IT" Acknowledge from any iPhone you are signed in on, even when the alert went to a teammate. Everyone sees who has it, and escalation stops. WATCH IT UNFOLD An open incident puts a live counter on your Lock Screen and in the Dynamic Island, showing who is on it and what happens next, then ends with how long the outage lasted. Home Screen and Lock Screen widgets keep your worst monitor in view. ON YOUR WRIST The Apple Watch app carries the full roster. Acknowledge an incident or run a check with your phone in another room, and put your fleet's state on the watch face with complications. YOUR TEAM, FROM YOUR PHONE Invite teammates, switch workspaces, and set how often new monitors are checked, how many failures it takes to alert, and which alert policy they follow. BUILT NOT TO LIE TO YOU If the app cannot reach our servers it says so plainly rather than showing you a reassuring green screen. Status is never colour alone, so it reads correctly on a watch face, in sunlight, and with VoiceOver. FREE TO START Three monitors and everything above, free, with no trial and no card. Pro raises the account to 50 monitors and lets you bring up to 10 people onto the team, each seeing only the monitors you assign them. - iPhone, iPad and Apple Watch - Sign in with Apple, Google, a passkey, or an emailed code - Full VoiceOver and Dynamic Type support Add the first one in about thirty seconds. SUBSCRIPTION Last Seen Up Pro is an auto-renewable subscription, sold monthly at $5.99 or yearly at $59.99. It raises the account to 50 monitors and 10 people on the team, and unlocks nothing else. Payment is charged to your Apple Account on confirming the purchase, and the subscription renews automatically at the then-current price unless it is cancelled at least 24 hours before the period ends. Manage or cancel it in Settings on your iPhone, under your name, then Subscriptions. Privacy policy: https://lastseenup.com/privacy Terms of Use (EULA): https://lastseenup.com/terms