Comparison

Sun Seeker vs Theodolite

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

Head to head
About

Sun Seeker

Track the sun's hourly direction, path, and times for sunrise, sunset, and twilight. Visualize solar data with a compass or AR view, and receive notifications for key solar events. Ideal for planning outdoor activities, photography, and property assessment.

Highlights
  • Hourly sun direction intervals
  • Sunrise, sunset, and twilight times
  • Golden hour and blue hour visualization
  • Flat compass and 3D AR views
  • Sun shadow length calculation
  • Sun event notifications
  • Location-based solar data
Features
Read full description

Sunseeker is a comprehensive solar tracking & compass app. It shows the sun’s hourly direction intervals, its equinox, winter & summer solstice paths, sunrise sunset times, twilight times, sun shadow, the golden hour & more. The app allows you to add sun-event notifications & has a widget showing the day’s solar data & position on an arc. The surveyor view shows the solar direction for each sunlight hour. Sunseeker has both a flat compass view & a 3D Augmented Reality (AR) view to show the solar position & path. The app is useful for - ▶ Photographers- to plan according to the golden hour or blue hour & optimal sunlight conditions, sunrise & sunset times & directions. ▶ Cinematographers- this sun tracker & sun surveyor enables you to find the sun exposure, directions, sun shadow & sunrise sunset times for any location. ▶ Real Estate Buyers- can use the app before buying a property to check the sun path & to find the sun exposure of properties. ▶ Drivers - Sunseeker lets you track the sun path & movement during the days & helps drivers know the sun position to find how long the car will remain in the shade at any given parking spot. ▶ Campers & Picnickers- for anyone planning a day out, Sunseeker app will help in finding where to camp, sit or pitch an umbrella depending on the sunlight & sun direction. ▶ Gardeners- Sun Seeker can also help with finding optimal planting locations & seasonal sunlight hours as a sun rise calendar ▶ Architects & Surveyors- for visualising the spatial variability of the solar angle throughout the year & using the compass app as a sun surveyor & calendar to determine the sunlight directions. Main Features * Sunseeker is a sun locator which uses GPS, magnetometer & gyroscope to find the correct solar position & sun path for your current location. * Flat compass view shows current solar position, diurnal solar angle & elevation (separated into day & night segments), sun shadow length ratio, atmospheric path thickness. * 3D augmented reality (AR) camera overlay view shows the sun's current position, its path with hour points marked. Check golden hour using this feature! * Camera view has an optional pointer to guide you towards the current location of the sun & help you with sun direction. * Map view shows solar direction arrows, sun path & elevations for each hour of the day. * Choose any date to view sun position & path on that day. You can view sunset & sunrise times for each day as well. * Choose any location on earth (includes 40,000+ cities or custom locations available offline, as well as a comprehensive online map search capability) * Get additional details including sun rise, sunset & culmination times, maximum elevation, civil, nautical & astronomical twilight times of the sun. * Optional device notifications for all manner of sun-related periods & events, such as golden hour or blue hour, various twilight & shadow periods, or sun at a given compass heading or above a given elevation. * This sun rise calendar app allows the user to include equinox, summer & winter solstice paths on both flat compass view & camera view. Sun Seeker app has been featured in numerous high-profile blogs, websites & publications, including Wall Street Journal, Washington Post, Sydney Morning Herald etc. "Truly amazing", "Incredible", "Brilliant" - the most genuinely useful application of augmented reality - ever! Check out our YouTube video here: https://bit.ly/2Rf0CkO Simply search YouTube for "Sun Seeker app" to find many videos, websites & blogs created by our enthusiastic users FAQs * See https://bit.ly/2FIPJq2 - also easily accessible from the app's info screen Note * The compass accuracy depends on having an undistorted magnetic field around your device. If you use it close to metallic objects or electrical equipment, directional accuracy may be impaired. The device’s compass accuracy can be optimised by calibrating it prior to use. See app’s FAQs for more help.

About

Theodolite

This app combines a compass, inclinometer, rangefinder, GPS, and map with augmented reality features. Capture photos and videos with overlaid geographical data, and navigate using detailed offline maps. Share locations and collaborate with others for various outdoor and professional uses.

Highlights
  • Augmented reality viewfinder
  • Compass and inclinometer
  • GPS and map navigation
  • Data-overlay photo/video camera
  • Offline map support
  • Rangefinder and nav calculator
  • Coordinate system support
Currently charting
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Theodolite is a multi-function viewfinder that combines a compass, two-axis inclinometer, rangefinder, GPS, map, nav calculator, and geo-overlay photo/movie camera into one indispensable app. Theodolite was one of the very first augmented reality (AR) apps when it was released in 2009, and it’s been downloaded and used by millions of customers since then. Uses are endless, and the app is great for land measurements, outdoor sports, sightseeing, navigation, and finding your way around. Theodolite is a pro grade app and is used extensively by surveyors, geologists, architects, engineers, competitive sportsmen, first responders, military personnel, and search and rescue workers around the world. Theodolite lets you take data-overlay photos and movies with 2X-8X zoom. Overlay geographical data, angle markings, date/time, author/company info, and project notes directly on photos and movies for later reference. The same data is written into the metadata record of images, making image files self-contained data records. Third-party apps can tap into Theodolite's advanced camera functions with a camera sharing feature. View current position on the built-in map with optional offline Outdoors maps that include topo contours, roads, trails, landmarks, campgrounds, ski lifts, and more. Live map markers continually update distance/heading relative to the current location and also show wayfinding info in the main viewfinder. Draw polygons on the map to mark things like property boundaries and trails, and import/export polygon data via KML. Share map markers and nav calculator points with other users of Theodolite via text messages or e-mail. This powerful capability opens up a wide range of collaborative uses including team land surveying, accident investigations, spotting wild fires, triangulation of landmarks, and advanced tactical observation and targeting. With an optional in-app purchase to enable team tracking, you can share location with up to 20 people on Theodolite's map. Theodolite includes features for serious users like a reference angle mode, nav calculator, map marker import/export, manual and automatic data logging with CSV and KML export, clipboard integration, %grade display, mil compass readout, optical rangefinders (including a mil-based reticle, sniper-style stadiametric graphs, and a variable 4X-24X scope), and night filters to improve use in dark conditions. Theodolite can provide location in military grid reference system (MGRS) coordinates, Universal Transverse Mercator (UTM) coordinates, British/Irish National Grids, US National Grid, Maidenhead locator system, Map Grid of Australia, and six latitude/longitude formats. Optional US State Plane coordinates include SPCS27 and SPCS83 zones covering all US States. The optional Datum Pack adds over 230 geodetic datums to the app to improve position computation from GPS data, covering regions and countries on all continents around the world. AR Layers include navigational aids like the sun, moon, planets, and Polaris (North star), and the optional US Mountain Summits layer that shows over 70,000 US mountain summits in the viewfinder. Theodolite has been shown in Apple Keynotes, featured on the App Store, and has been a #1 selling Navigation app in App Stores around the world. Since its introduction in 2009, Theodolite has defined augmented reality navigation. The app continually introduces new technologies, pushing the limits of iOS app development and taking advantage of new hardware capabilities. Find out why Apple named Theodolite one of the most amazing apps available and showed it being used to explore the Great Wall of China. Where will you take it on your next adventure? Note: Theodolite is an iPhone app -- see “Theodolite HD” for use on an iPad. And be sure to check out the all-new "Theodolite for Watch" and put Theodolite on your wrist!

Screenshots

Sun Seeker4 screens
Theodolite4 screens

Verdict

The call

The clearest difference is in-app purchases: Sun Seeker at none against Theodolite's 8. Sun Seeker also leads on update cadence (every 2 months vs every 4 months) and ratings volume (13K vs 902). Theodolite's advantage is ads (none vs shown) and price ($8.99 vs $11.99). On rating, review sentiment, chart position 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

Sun Seeker costs $11.99 and Theodolite $8.99 up front. Theodolite sells 8 one-off in-app purchases. Sun Seeker asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Sun Seeker against 4.7 for Theodolite. That said, the two scores are not equally well evidenced: Sun Seeker has 13K ratings behind it against 902, so its average is the more settled of the two. Written reviews split almost evenly too, at 88% and 88% positive.

UpkeepUpdate frequency

Sun Seeker ships an update every 2 months, Theodolite every 4 months. The most recent releases landed on September 25, 2026 and September 24, 2026 respectively.

Scorecard6 real differences · 5 level
Sun Seeker versus Theodolite: the parameters behind the verdict, then further details
ParameterSun SeekerTheodolite
Price$11.99$8.99 — better
Rating4.8 (13K ratings) — better4.7 (902 ratings)
Positive reviews87.9% of reviews — better87.8% of reviews
Number of ratings13K — better902
Update frequencyEvery 2 months — betterEvery 4 months
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
Best chart rank#5 — better#7
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPod
Requires iOS16.615.6 — better
Further details — not scored
Size50 MB30 MB
Age rating4+4+
DeveloperozPDACraig Hunter

Customer experience

Sun Seeker

All ratings12,846 ratings
Positive96.7%
Neutral1.5%
Negative1.9%
Written reviews487 reviews
Positive87.9%
Neutral2.3%
Negative9.9%

Theodolite

All ratings902 ratings
Positive92.8%
Neutral2.9%
Negative4.3%
Written reviews475 reviews
Positive87.8%
Neutral4.8%
Negative7.4%

Bugs and requests

Sun Seeker

Reported bugs

2 issues
  • App crashes on certain devices
  • Compass not working properly

Requested features

4 requests
  • Add moon tracking and phases
  • Improve offline functionality
  • Provide more customization options
  • Integrate weather data for better planning

Theodolite

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Sun Seeker

No in-app purchases

8 purchases

Theodolite

One-time8
  • 1,000 Outdoors Map Tiles$0.99
  • Team Tracking$1.99
  • World Datum Pack$2.99
Show 5 more
  • US Mountain Summits AR Layer$2.99
  • 5,000 Outdoors Map Tiles$4.99
  • 10,000 Outdoors Map Tiles$8.99
  • 20,000 Outdoors Map Tiles$17.99
  • US State Plane Coordinates$24.99

Questions

Is Sun Seeker free?
Sun Seeker costs $11.99, with no in-app purchases.
Is Theodolite free?
Theodolite costs $8.99, and also offers in-app purchases.
Which has better reviews, Sun Seeker or Theodolite?
Sun Seeker is rated higher. Sun Seeker averages 4.8 out of 5 from 13K ratings, while Theodolite averages 4.7 from 902 ratings.
Do Sun Seeker or Theodolite have ads?
Sun Seeker shows ads; Theodolite does not.
Which is updated more often, Sun Seeker or Theodolite?
Sun Seeker ships an update every 2 months, and Theodolite every 4 months. Most recently, Sun Seeker was updated on September 25, 2026 and Theodolite on September 24, 2026.
Which is more popular, Sun Seeker or Theodolite?
Sun Seeker currently peaks at #5 in the App Store charts, and Theodolite at #7. Chart position reflects recent download velocity rather than total install base.

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