SunOnTrack vs Overkill Solar
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Sun path and position calculation
- Shadow simulation and length calculation
- Augmented Reality (AR) visualization
- Map-based planning
- Sunlight amount estimation
- Seasonal shadow differences
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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.
Overkill Solar
This app connects to a solar battery management system to provide detailed monitoring and control. Users can track cell voltage, capacity, current, and manage charging/discharging ports. It also offers advanced configuration options for calibration, balancing, and protection settings.
- Monitor cell voltage and capacity
- Control charging and discharging ports
- Calibrate voltage and current
- Configure balancer and protection values
- Log voltage, current, and power
- Monitor BMS alarms and temperature
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Overkill Solar iOS App allows users to connect with the Overkill Solar Battery Management System (BMS). It can monitor voltage of the cells, total capacity, charging and discharging current, and switch the charging and discharging ports on or off. Features: - change bluetooth advertising name - unlock hardware protected BMS - save or load BMS configurations - calibrate cells voltage and charging or discharging current - log maximum or minimum voltage, current and power - enable and configure the balancer - modify the capacity settings - monitor temperature - monitor BMS alarms - import and export .fig files - set level 2 and 3 advanced protection values
Screenshots
Verdict
The clearest difference is price: Overkill Solar at Free against SunOnTrack's $9.99. Overkill Solar also leads on review sentiment (100% vs 83%) and iOS requirement (13.4 vs 16.0). SunOnTrack's advantage is ratings volume (148 vs 16). On rating, update cadence, ads and in-app purchases 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
Overkill Solar is free to download; SunOnTrack costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.6 for SunOnTrack against 4.7 for Overkill Solar. That said, the two scores are not equally well evidenced: SunOnTrack has 148 ratings behind it against 16, so its average is the more settled of the two. Written reviews are what separate them: 83% of SunOnTrack's written reviews are positive against 100% of Overkill Solar's.
SunOnTrack ships an update every 2 months, Overkill Solar every 4 months. The most recent releases landed on September 23, 2026 and August 18, 2026 respectively.
| Parameter | SunOnTrack | Overkill Solar |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 4.6 (148 ratings) | 4.7 (16 ratings) — better |
| Positive reviews | 83.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 148 — better | 16 |
| Update frequency | Every 2 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 13.4 — better |
| Further details — not scored | ||
| Size | 11 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Moder | Overkill Solar LLC |
Customer experience
SunOnTrack
Overkill Solar
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
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- 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
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- Allow input of roof pitch for efficiency calculations
- Change shadow color for better visibility
- Add moon tracking feature
- Allow AR 3D view recalibration
Overkill Solar
Not enough reviews yet to summarise bugs or requests.
In-app purchases
SunOnTrack
No in-app purchases
Overkill Solar
No in-app purchases









