Comparison

Prometheus vs PosterMap

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

Head to head
About

Prometheus

Visualize your life as a continuously updating clock, down to 10 decimal places. Track unique milestones and explore life statistics. Available on iPhone and Apple Watch with customizable widgets and complications.

Highlights
  • Decimal age clock
  • Life milestone countdowns
  • Detailed life statistics
  • Apple Watch app and complications
  • Home and Lock Screen widgets
  • Live Activities support
Features
Read full description

Your time is precious. See it. Prometheus turns your age into a living clock, updating continuously to 10 decimal places. Count down to numbers you will only pass once, explore your life in weeks and statistics, and keep time visible across iPhone and Apple Watch. YOUR LIFE, LIVE • See your decimal age or a detailed breakdown of years, months, days, hours, minutes, and seconds • Count down to your billionth second, 10,000th day, next trip around the sun, and other once-in-a-lifetime milestones • Get an optional alert at the exact moment a milestone arrives • Explore estimated heartbeats and breaths, lunar cycles, distance traveled through space, and more • See your entire life as one dot for every week ON EVERY SCREEN • Apple Watch app and watch face complications • Home Screen and Lock Screen widgets • Live Activities on the Lock Screen and Dynamic Island • Shareable cards for Stories, Reels, and more SET UP ONCE Enter your birth date and time. Prometheus handles the rest. Your birth data stays on your devices, and no account or sign-in is required. Named after the Titan who gave humanity fire and knowledge, Prometheus is a reminder to see and use your most precious resource: time.

About

PosterMap

Features
Read full description

Turn your favorite memories, travels, and special places into beautiful, high-resolution map posters with PosterMap. Whether it’s the city where you fell in love, your hometown, or the route of an unforgettable road trip, PosterMap lets you design professional-quality map art right from your phone. Create a unique masterpiece in seconds and export it in stunning 4K resolution—perfect for framing, hanging on your wall, gifting to a loved one, or sharing on social media. KEY FEATURES: ANY CITY, ANYWHERE Search for any city, town, or specific address in the world. Our precision mapping engine instantly generates a high-detail map of your chosen location. DOZENS OF PREMIUM THEMES Match your personal aesthetic. Choose from an ever-growing library of artistic themes, including: • Minimalist & Classic • Cyber Noir & Neon • Vintage Paper & Golden Era • Watercolor & Neutral tones ...and many more tailored palettes! DRAW CUSTOM ROUTES & JOURNEYS Want to highlight a road trip, marathon route, or daily commute? Simply select a starting point (A) and destination (B). You can even tap to add via points and customize the exact route path. CUSTOM MARKERS & PINS Highlight the exact spot where it happened. Add beautiful markers—like hearts, stars, or classic pins—and customize their colors and sizes. BEAUTIFUL TYPOGRAPHY Personalize the text on your poster. Write your own custom titles, subtitles, and coordinates. Choose from a curated selection of premium fonts (from elegant serifs to modern minimalist sans-serifs) to complete the gallery look. PRINT-READY 4K EXPORT Don't settle for blurry screenshots. PosterMap generates your final design in ultra-high, print-ready 4K resolution. Use standard preset sizes (like Square, Portrait, or Story) or let the app crop it perfectly for your canvas. Export directly to your camera roll without watermarks. ** PERFECT FOR:** • Anniversary or wedding gifts (The place we met) • Travel enthusiasts and nomads • Marathon runners and cyclists (Showcase your route!) • Interior design and modern wall decor Design your world. Download PosterMap today and start creating your custom map art! Eula: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Prometheus4 screens
PosterMap4 screens

Verdict

The call

The clearest difference is in-app purchases: Prometheus at none against PosterMap's 3. Prometheus also leads on ads (none vs shown). PosterMap's advantage is update cadence (every 9 days vs every 3 months) and iOS requirement (15.1 vs 17.6). On price and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. PosterMap sells 3 in-app purchases, starting at $4.99 per month. Prometheus asks for nothing beyond the download.

UpkeepUpdate frequency

Prometheus ships an update every 3 months, PosterMap every 9 days. The most recent releases landed on September 15, 2026 and September 17, 2026 respectively.

Scorecard4 real differences · 5 level
Prometheus versus PosterMap: the parameters behind the verdict, then further details
ParameterPrometheusPosterMap
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 monthsEvery 9 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS17.615.1 — better
Further details — not scored
Size5 MB98 MB
Age rating4+4+
DeveloperWouter StierhoutAli Goktas

In-app purchases

None

Prometheus

No in-app purchases

3 purchases

PosterMap

Subscriptions2
  • Monthly$4.991 Month
  • Yearly$19.991 Year
One-time1
  • Lifetime Pro Unlock$39.99

Questions

Is Prometheus free?
Prometheus is free to download, with no in-app purchases.
Is PosterMap free?
PosterMap is free to download, with in-app purchases available.
Do Prometheus or PosterMap have ads?
PosterMap shows ads; Prometheus does not.
Which is updated more often, Prometheus or PosterMap?
Prometheus ships an update every 3 months, and PosterMap every 9 days. Most recently, Prometheus was updated on September 15, 2026 and PosterMap on September 17, 2026.

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