DevTime vs PrismKit

DevTime is the essential date converter, timestamp calculator, and time toolkit designed specifically for developers. Paste any timestamp, date string, or duration — DevTime instantly converts it across every format you work with. Whether you need a reliable unix timestamp converter, an epoch converter, or a tool to parse complex date-time strings, DevTime handles it all in real time. SMART INPUT DETECTION Type or paste anything into the date converter: • Unix seconds or milliseconds • ISO 8601 & RFC 2822 strings • Natural-language expressions (e.g., "Monday", "3 weeks") • Durations (e.g., "90 minutes") 9 LIVE RESULT CARDS • Unix Timestamp Converter: Instantly switch between seconds, milliseconds, and relative time. • Date Converter & Parsing: Convert to ISO 8601, RFC 2822, SQL, HTTP Cookie, US, EU, and custom patterns. • Date Components: View year, month, day, weekday, hour, minute, second, quarter, and week number. • Ordinal Date: ISO ordinal, day of year, and ISO week. • Julian Date: Julian Day Number (JDN). • Date Arithmetic & Calculation: Add or subtract any combination of time units with live cumulative results. • World Clock & Timezone Converter: Compare your datetime across any global timezone. • Alternate Calendars: Convert dates to Hebrew, Persian (Solar Hijri), and Islamic (Tabular) formats. • Duration Converter: Convert any duration to milliseconds, seconds, minutes, hours, days, weeks, and years. COPY & LOOP-BACK Every value has a one-tap copy button. The loop-back button sends any conversion result back into the input field so you can chain your date-time conversions without retyping. DESIGNED FOR DEVELOPERS • Monospace values for easy reading • Sleek dark interface • No account required • Core features work entirely offline • Privacy-focused: analytics are used solely to improve app stability and performance

PrismKit is a developer's Swiss Army knife: a collection of fast tools that run entirely on your iPhone and iPad — offline, with nothing ever sent to a server. Paste a production token, a private config, or any sensitive data with confidence. Everything is processed locally on your device. TOOLS INCLUDED • JSON ↔ YAML — Convert between both formats in either direction. • JSON ↔ TOON — Convert to and from TOON, the compact format that saves tokens when working with AI models. • JSON Format — Format, validate, and minify with error detection. • Base64 — Encode and decode text. • URL Encode — Encode and decode URL strings. • JWT Decoder — Inspect the header and payload, see the expiry, and verify the HMAC signature (HS256, HS384, and HS512). • Hash — Generate SHA-256, SHA-512, and MD5. • QR Code — Generate and customize QR codes with colors, a logo, and PNG export. • UUID — Generate unique identifiers in batches. • Regex Tester — Test regular expressions and see matches and their groups. • Diff — Compare two versions of text line by line and spot the differences. BUILT TO BE FAST • Command palette (⌘K) to jump to any tool in seconds. • Mark your favorite tools to keep them within reach. • Copy any result with a tap. • Optimized for iPhone and iPad, with a two-column layout on larger screens. • Light, dark, and automatic themes. PRIVACY FIRST • 100% offline: no tool needs an internet connection. • No accounts, no analytics, no ads, no tracking. • We collect absolutely no data. Made by developers, for developers.