Stamp Identifier vs World Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stamp Identifier
Instantly identify postage stamps by taking a photo. This app uses AI to provide details like origin, value, and historical context. Organize your collection and connect with other enthusiasts.
- AI-powered stamp identification
- Detailed stamp information (origin, value, history)
- Extensive global stamp database
- Collection organization and sorting
- Community features and expert insights
- Market trends and educational resources
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Stamp Identifier is the ultimate tool for collectors, hobbyists, and enthusiasts looking to identify and explore the fascinating world of postage stamps. With Stamp Identifier, you no longer need to spend hours researching—just snap a photo, and let the app do the work! Powered by advanced AI and image recognition technology, Stamp Identifier instantly analyzes the stamp and provides a wealth of information, including its origin, historical period, estimated value, printing techniques, and catalog details. Whether you're discovering a rare vintage stamp or identifying a modern issue, Stamp Identifier makes the process effortless and highly accurate. Beyond quick identification, Stamp Identifier offers an extensive and continuously updated database covering both classic and contemporary stamps from around the world. Users can instantly reveal key details such as materials, perforation, issue date, color, face value, and even historical usage. Designed with collectors in mind, the app provides intuitive tools for sorting, filtering, and digitally organizing personal collections, making it easy to track owned stamps and wishlist items. Stamp Identifier is more than just a recognition tool—it’s a complete stamp collecting companion. The app provides access to expert insights, educational resources, and market trends, helping users understand the cultural significance behind various designs. With interactive features, collectors can engage with a global community, share their findings, discuss pricing trends, and even participate in virtual exhibitions or trade events. Whether you're a beginner or an experienced philatelist, Stamp Identifier is your go-to digital reference, social hub, and learning platform. With just one photo, unlock the story behind every stamp, enhance your knowledge, and take your collecting experience to the next level. Stamp Identifier Premium Unlock the full potential of Stamp Identifier with Premium Access to UNLIMITED stamp identifications : Subscription Plans: - Weekly Access: $7.99 per week - Annual Access: $34.99 per year (includes a 7-day free trial) Subscription Terms: Payment will be charged to your iTunes account at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage or cancel your subscription in your Apple Account Settings. Any unused portion of a free trial will be forfeited upon purchase of a subscription. - Privacy Policy: https://abdcorporate.com/apps/stamp/privacy - Terms of Use: https://abdcorporate.com/apps/stamp/terms
World Clock
Easily track time across multiple cities with visual gradients and an intuitive converter. Organize contacts by time zone, calculate dates, and utilize customizable widgets. Works offline for core functionality.
- Instant time conversion with visual slider
- Hourly timeline grid with overlapping work times
- Organize contacts into groups by time zone
- Date and duration calculator
- Customizable widgets for home screen
- Offline functionality for core features
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Every time zone. One glance. One tap to convert. World Clock: Timezone Converter is the fastest way to track time across the globe. Whether you're scheduling meetings with a distributed team, calling family overseas, or planning your next trip - see every city's local time at a glance with beautiful color gradients that shift from day to night. INSTANT TIME CONVERSION Tap any city to open the converter. Slide the time and watch every clock on your screen update simultaneously - colors shift from sunrise to sunset as you scrub through the hours. No other app makes time conversion this visual and intuitive. TIMELINE GRID Switch to the Timeline tab for a powerful hourly grid view. See all your cities side by side with color-coded cells - golden hours highlight overlapping work times so you can find the perfect meeting slot in seconds. PEOPLE & GROUPS Assign contacts to time zones and organize them into groups - Team, Family, Clients. See at a glance who's awake, who's in their workday, and who you shouldn't call right now. Add up to 3 people free. DATE CALCULATOR Need to know the date 90 business days from now? Or how many days between two dates? The built-in calculator handles date math, business day calculations, and duration computations. WIDGETS Analog clocks, digital grids, solar arcs, world maps, timeline views, people status, gradient cards, heat maps - plus Lock Screen and Liquid Glass styles for iOS 26. Your Home Screen, your way. WORKS COMPLETELY OFFLINE All core features - clocks, converter, timeline, sunrise/sunset calculations - work without an internet connection. Your data stays on your device. FREE FEATURES Track up to 4 cities with live time-of-day gradients Full time converter with hour slider Timeline grid with color-coded golden hours Share conversion cards (with watermark) Date calculator with duration and business day math Up to 3 people with timezone tracking Dark mode, 12h/24h formats DST awareness with advance warnings VoiceOver and Dynamic Type support PRO SUBSCRIPTION (unlocks with monthly, annual, or lifetime purchase): Unlimited cities and people Calendar Quick-Add with title, notes, and duration All widget styles including Lock Screen Smart Share to Slack, Teams, and Google Calendar .ics calendar invite export Share cards without watermark Custom themes, app icons, and emoji Weather and moon/solar data at each location Live seconds display Timeline range selection and overlap finder Meeting cost analysis Smart notifications AI Time Assistant Custom work hours per person Terms of Service: https://worldtimezones.app/terms Privacy Policy: https://worldtimezones.app/privacy
Screenshots
Verdict
The clearest difference is rating: World Clock at 5.0 against Stamp Identifier's 4.4. Stamp Identifier's advantage is update cadence (every 4 days vs every 3 weeks) and iOS requirement (15.6 vs 18.0). On price, review sentiment, ratings volume and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Stamp Identifier sells 2 in-app purchases, starting at $7.99 per 7 days and World Clock sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
World Clock holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 16 and 7 respectively. Written reviews point the same way: 94% of Stamp Identifier's written reviews are positive against 100% of World Clock's.
Stamp Identifier ships an update every 4 days, World Clock every 3 weeks. The most recent releases landed on October 30, 2026 and November 7, 2026 respectively.
| Parameter | Stamp Identifier | World Clock |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (16 ratings) | 5.0 (7 ratings) — better |
| Positive reviews | 94.4% of reviews | 100.0% of reviews — better |
| Number of ratings | 16 — better | 7 |
| Update frequency | Every 4 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 54 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | ABD Co. | Apphaze |
Customer experience
Stamp Identifier
World Clock
In-app purchases
Stamp Identifier
- Weekly Access$7.997 Days
- Yearly Access7 Days trial$34.991 Year
World Clock
- World Clock Pro Monthly$4.991 Month
- World Clock Pro Yearly$19.991 Year
- World Clock Pro Lifetime Access$29.99
Questions
Is Stamp Identifier free?
Is World Clock free?
Which has better reviews, Stamp Identifier or World Clock?
Do Stamp Identifier or World Clock have ads?
Which is updated more often, Stamp Identifier or World Clock?
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