Comparison

Postcards by PostNord vs Sun Tracker AR

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

Head to head
About

Postcards by PostNord

Create and send personalized physical postcards from your photos. Design the front with text and emojis, write a message on the back with custom fonts, and have it printed and mailed worldwide.

Highlights
  • Send physical postcards worldwide
  • Use photos from gallery or camera
  • Design postcard front with text and emojis
  • Write personalized messages on back
  • Multiple font and color options
  • Pay with Apple Pay, credit card, or Swish
Features
Read full description

With Postcards, you can send real physical postcards to anyone in the world, directly to the recipient's mailbox! Download the app today and surprise someone you love. As simple as this: • Select a picture from your photo album or take a new photo with the camera • Be creative and design the front of the card with custom texts and emojis • Write a personal greeting on the back with the help of stylish fonts and colours • Pay by Apple Pay, credit card or Swish • PostNord Sweden will print and send the postcard to the recipient you have chosen • To addresses outside of Sweden, delivery will take a few days longer than Swedish domestic deliveries depending on the recipient’s country. PostNord Sverige AB (Sweden Post corporate identity number 556711-5695) is the responsible publisher of the Postcards service. Post Denmark is acting as an agent for PostNord Sverige AB. If you have questions regarding this app please contact PostNord Customer Service by Email: postcards.se@postnord.com. Regards PostNord

About

Sun Tracker AR

Visualize the sun's path and shadow effects in augmented reality. Get detailed solar data, including sunrise/sunset times and day/night lengths. Plan for optimal lighting conditions for photography, construction, and gardening.

Highlights
  • Augmented Reality solar path projection
  • 2D/3D solar path and shadow simulation
  • Detailed sun position data tables
  • Interactive 3D shadow simulator
  • Day & night map visualization
  • Calendar notifications for solar events
  • Widget for sunrise/sunset alerts
Features
Read full description

Know exactly where the sun will be — at any place, on any date. Sun Tracker AR projects the sun's path into the real world through your camera, maps it in 2D and 3D, and simulates the shadows it casts. Built for photographers, architects, house hunters, gardeners, surveyors and solar panel installers — and for anyone who wants to know when the light hits. SOLAR PATH IN AR
 • Augmented reality projection of the sun's position and full daily arc at your location. Point your phone and see where the sun will rise, peak and set. MULTIFUNCTIONAL MAP
 • Detailed 2D and 3D visualisation of the solar path, compass mode and shadow simulator. See at a glance which side of a building gets the most sunlight hours per day. INTERACTIVE 3D SHADOW SIMULATOR
 • Sunny or shaded? Find out! Wondering if your garden, balcony, solar panels, or favorite photo spot will be in the sun or shade? Pick any location, choose a day, and get the answer. • Real buildings, your own objects. Explore 3D shadows cast by real buildings, or add your own trees, cubes, and fences to see how they affect sunlight, all directly on the map. • Explore the day, get the full picture. Slide through the hours to watch sunlight and shadows change, and get a clear report showing exactly when your chosen spot is sunny or shaded. SOLAR ECLIPSE
 Sun Tracker AR gets you ready:
 • Interactive eclipse map with the path of totality and obscuration bands
 • Exact contact times for your location — first contact, totality, maximum, last contact — in your local time zone
 • Duration of totality and maximum obscuration wherever you stand
 • Plus every solar eclipse through 2030, so you can plan the next trip DATA TABLES
 • Complete overview of sun positions, day and night lengths, sunrise and sunset times, golden hour, and astronomical, nautical and civil twilight. Plus solstices, equinoxes and eclipses. DAY & NIGHT MAP
 • Live world map showing the terminator — the moving line between daylight and darkness. CALENDAR NOTIFICATIONS
 • Get notified for the solar events you care about: sunrise, sunset, eclipses. One-time or daily. WIDGET
 • Keep the next sunrise and sunset on your home screen. NO ADS. EVER. • The free version covers your current location and time. Premium unlocks any location, any date, any year — the full planning toolkit.

Screenshots

Postcards by PostNord4 screens
Sun Tracker AR4 screens

Verdict

The call

The clearest difference is review sentiment: Sun Tracker AR at 76% against Postcards by PostNord's 0%. Sun Tracker AR also leads on rating (4.8 vs 3.3) and ratings volume (1.1K vs 15). Postcards by PostNord's advantage is in-app purchases (none vs 1) and iOS requirement (13.0 vs 26.0). On price, ads 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. Sun Tracker AR sells 1 one-off in-app purchase. Postcards by PostNord asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Sun Tracker AR holds the better App Store score, 4.8 against 3.3. That said, the two scores are not equally well evidenced: Sun Tracker AR has 1.1K ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 0% of Postcards by PostNord's written reviews are positive against 76% of Sun Tracker AR's.

UpkeepUpdate frequency

Postcards by PostNord ships an update every 2 months, Sun Tracker AR every 10 days. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

Scorecard7 real differences · 3 level
Postcards by PostNord versus Sun Tracker AR: the parameters behind the verdict, then further details
ParameterPostcards by PostNordSun Tracker AR
PriceFreeFree
Rating3.3 (15 ratings)4.8 (1.1K ratings) — better
Positive reviews0.0% of reviews76.3% of reviews — better
Number of ratings151.1K — better
Update frequencyEvery 2 monthsEvery 10 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better26.0
Further details — not scored
Size27 MB43 MB
Age rating4+4+
DeveloperPostNord Group ABZuzana Eskinasi

Customer experience

Postcards by PostNord

All ratings15 ratings
Positive46.7%
Neutral13.3%
Negative40.0%
Written reviews8 reviews
Positive0.0%
Neutral12.5%
Negative87.5%

Sun Tracker AR

All ratings1,081 ratings
Positive95.8%
Neutral1.6%
Negative2.6%
Written reviews194 reviews
Positive76.3%
Neutral6.2%
Negative17.5%

Bugs and requests

Postcards by PostNord

Not enough reviews yet to summarise bugs or requests.

Sun Tracker AR

Reported bugs

3 issues
  • App freezing and crashing
  • Outdated imagery not matching reality
  • Inconsistent performance across devices

Requested features

3 requests
  • More intuitive UI and onboarding
  • Offline mode support
  • Ability to manually adjust location

In-app purchases

None

Postcards by PostNord

No in-app purchases

1 purchases

Sun Tracker AR

One-time1
  • Premium$11.99

Questions

Is Postcards by PostNord free?
Postcards by PostNord is free to download, with no in-app purchases.
Is Sun Tracker AR free?
Sun Tracker AR is free to download, with in-app purchases available.
Which has better reviews, Postcards by PostNord or Sun Tracker AR?
Sun Tracker AR is rated higher. Postcards by PostNord averages 3.3 out of 5 from 15 ratings, while Sun Tracker AR averages 4.8 from 1.1K ratings.
Do Postcards by PostNord or Sun Tracker AR have ads?
Neither Postcards by PostNord nor Sun Tracker AR shows ads.
Which is updated more often, Postcards by PostNord or Sun Tracker AR?
Postcards by PostNord ships an update every 2 months, and Sun Tracker AR every 10 days. Most recently, Postcards by PostNord was updated on October 24, 2026 and Sun Tracker AR on October 29, 2026.

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