Comparison

SunOnTrack vs Lago

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

Head to head
About

SunOnTrack

Plan sunlight, sun position, and shadows accurately on a map or in AR. Visualize sun paths, elevation, and shadow lengths for photography, real estate, gardening, and photovoltaics.

Highlights
  • Sun path and position calculation
  • Shadow simulation and length calculation
  • Augmented Reality (AR) visualization
  • Map-based planning
  • Sunlight amount estimation
  • Seasonal shadow differences
Features
Read full description

SunOnTrack transforms your device into a professional tool for planning sunlight, the sun’s position, path and shadows for every place in the world (and at every time) accurately, on the map or in AR. Whether for photography, real estate, your new flat or house, gardening, photovoltaics or all outdoor activities: sunlight, sun position and shadows play a major role. See sun’s elevation, its direction, exact sun movement over day and year, objects’ shadows, shadow lengths, shadow differences between seasons, and more. RECOMMENDED BY PROFESSIONALS: „This app is awesome! It has helped me to align the PV modules (solar panels) optimally.“ – Jürgen „For me as a photographer SunOnTrack is an extremely practical tool. Always knowing the sun’s position in real time brings enormous relief. Planning photo shootings becomes significantly easier.“ – Aki from Akigrafie Live „I am absolutely thrilled. I work in the real estate industry and can now use AR to check with my clients when the sun is shining on the balcony. Amazed customers guaranteed.“ – Toni K. „It's very useful and professional. It helps me coordinate my trips.“ – Dino PHILOSOPHY: No ads. Pay once, get full access forever. No user tracking. SunOnTrack tracks the sun, but only the sun, not the user! For sure. This app is a professional product. It can be bought for a one-time price to get all the high quality features it offers at once, without distracting ads or the need for further in app purchases. • CREATORS (in photography/filming) all over the world love SunOnTrack not only for its easy usage but also for the extensive functionality it offers. With it you're guaranteed to not miss a perfect scene and optimal light – during the day, Golden Hour or Blue Hour, for instance. Precise, location-dependent planning of the sun’s position and natural lighting of your subjects are extremely relevant in photography – whether capturing landscapes, objects or humans. • You would like to know the effective AMOUNT OF SUNLIGHT a flat or house/property offers? During Winter, when days are shorter? Get a general picture in advance on Maps or impress at site visits and property tours with showing the sun’s path at the kitchen window for the whole year, live in 3D in your camera image using Augmented Reality (AR)! It’s an insiders’ tip for real estate agents, house builders or interested individuals in general. • PHOTOVOLTAICS: SunOnTrack provides professional support in placing, adjusting and optimizing your solar modules. Where does sun rise, where does it set? See the differences between the seasons at your location. • We love green! We love GARDENS. Plan your garden with SunOnTrack. Simulate the exact shadows of multiple objects in Shadow Simulation mode, by adding them on the map defining their heights. For example, you can see the length and impact of shadows casted by objects like houses or a trees when the sun follows its path. • SAVE all planned scenes, sun paths, shadow simulations and your places for later use. • As you can see in the screenshots, DAY VIEW provides precise, location-dependent information on the sun like day length, solar noon, sunrise, sunset and twilight times (like Blue Hour, Golden Hour, Astronomical Twilight, …) • For all OUTDOOR ACTIVITIES SunOnTrack wants to be your faithful companion as a sun tracker and planner. Whether in cities, in the mountains or when touring through valleys, meadows and fields, the app develops its full potential: on Maps, live in AR or even in advance when planning. NOTE: Ideas and feedback are very welcome. Please use the provided feedback function in the app. AR 3D functionality: SunOnTrack shows the sun’s position and path based on the orientation of your device with high precision. For identifying its orientation, your devices’ internal sensors are used. In order to achieve exact results, a calibration can be required by moving your device in a figure-eight-pattern and keeping it away of metallic objects.

About

Lago

Features
Read full description

Where does your money actually go each month? Lago shows you—clearly, instantly, and without the spreadsheets. Lago is a simple budgeting app for everyday spending. Keep track of cash, e-wallets, bank accounts, credit cards, and more in one place. Log an expense in seconds, create a budget you can actually follow, and watch your savings grow. The name says it all—lago, to grow. Small, steady habits can turn into meaningful savings. WHAT YOU CAN DO • Track income, expenses, and transfers in just a few taps • Set monthly budgets by category and monitor your progress • Create savings goals and stay motivated as your money grows • Explore spending trends and financial Insights across multiple time periods • Track money in different currencies—ideal for travel, freelancing, and life abroad • Keep cash, e-wallets, bank accounts, credit cards, and other accounts in one view • Schedule recurring transactions and receive reminders for upcoming bills • Use clear charts to understand your spending habits and financial progress • Continue using Lago offline whenever you need it • Choose how your data is stored and synchronized SYNC ON YOUR TERMS Lago gives you control over synchronization: • Keep your data stored locally on your device • Use Apple Devices Sync through iCloud for supported Apple devices • Enable optional All Devices Sync to keep your Lago data aligned across supported iPhone, iPad, and Android devices All Devices Sync requires a Lago account and securely stores your synchronized data using Google Firebase services. You can manage your synchronization preference from Lago’s settings. INSIGHTS THAT HELP YOU GROW See how your income and spending change over time. Compare months, explore category breakdowns, follow your savings rate, review budget performance, and identify your biggest financial changes. Optional Apple Intelligence features are available on supported devices. Lago’s charts, totals, budgets, and standard Insights continue to work without them. WHOEVER YOU ARE Whether you are building an emergency fund, living on a tight budget, managing multiple currencies, or sending support to family abroad, Lago helps keep your finances clear and under your control. Small expenses can easily go unnoticed. See where your money goes, make a plan, and start growing your savings—one step at a time. Download Lago and take control of your finances today. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://mobileledger.wartle.app/privacy.html

Screenshots

SunOnTrack4 screens
Lago4 screens

Verdict

The call

The clearest difference is price: Lago at Free against SunOnTrack's $9.99. Lago also leads on update cadence (every 2 days vs every 2 months). SunOnTrack's advantage is in-app purchases (none vs 3) and iOS requirement (16.0 vs 26.0). On 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

Lago is free to download; SunOnTrack costs $9.99 up front. Lago sells 3 in-app purchases, starting at $1.99 per month. SunOnTrack asks for nothing beyond the download.

UpkeepUpdate frequency

SunOnTrack ships an update every 2 months, Lago every 2 days. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

Scorecard4 real differences · 6 level
SunOnTrack versus Lago: the parameters behind the verdict, then further details
ParameterSunOnTrackLago
Price$9.99Free — better
Rating4.6 (151 ratings) — better—
Positive reviews80.0% of reviews—
Number of ratings151 — better—
Update frequencyEvery 2 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS16.0 — better26.0
Further details — not scored
Size11 MB74 MB
Age rating4+4+
DeveloperThomas ModerWalter Sasam

Bugs and requests

SunOnTrack

Reported bugs

7 issues
  • Shadows are static and don’t change with time of day
  • AR 3D error required sensor failed on iPhone 13 Pro
  • Map is outdated
  • Timeline overlaps the angle circle
  • Cannot select future dates in the calendar on iPhone 13
Show 2 more
  • Shadow simulation accuracy issues
  • AR 3D view recalibration needed

Requested features

9 requests
  • Add wind data
  • Allow account creation and sharing simulations online
  • Improve precision of element placement
  • Add a tutorial or user tips
  • Enable future date selection in calendar
Show 4 more
  • Allow input of roof pitch for efficiency calculations
  • Change shadow color for better visibility
  • Add moon tracking feature
  • Allow AR 3D view recalibration

Lago

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

SunOnTrack

No in-app purchases

3 purchases

Lago

Subscriptions2
  • PRO Monthly7 Days trial$1.991 Month
  • PRO Annual7 Days trial$19.991 Year
One-time1
  • Lifetime Pro$49.99

Questions

Is SunOnTrack free?
SunOnTrack costs $9.99, with no in-app purchases.
Is Lago free?
Lago is free to download, with in-app purchases available.
Do SunOnTrack or Lago have ads?
Neither SunOnTrack nor Lago shows ads.
Which is updated more often, SunOnTrack or Lago?
SunOnTrack ships an update every 2 months, and Lago every 2 days. Most recently, SunOnTrack was updated on November 7, 2026 and Lago on November 5, 2026.

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