PV Optimizer & Solar compass vs TiltSync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PV Optimizer & Solar compass
Maximize your solar panel output with this tool. It guides you to adjust your panels' azimuth and tilt based on real-time solar data. The app also provides a solar compass and forecasts your potential monthly energy generation.
- Solar panel output maximization
- Azimuth and tilt adjustment guidance
- Real-time solar compass
- Solar panel output forecast
- Adjustable time frames for optimization
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PV Optimizer & Solar compass is a tool intended to maximise the output of your solar panels. To use the optimiser you only need to choose between one of the 4 time frames available (if you pretend to adjust your panels for the moment, every 3 months, 6 months or yearly), place your device above your panels, and adjust its azimuth and tilt according with the values given by the app. PV optimizer's algorithm will make sure you get the most from your panels and don't waste any opportunity to increase your output. This app also comes with a solar compass which you might find useful for optimizing your panels or for other activities, with plenty of real time data regarding solar position and radiation. In version 2.0 we are proud to present you a forecast for your solar panels output. Just input your panel capacity, tilt and azimuth angles, and you'll get a forecast for the monthly energy you might generate in theory. All the functionalities of this app are completely free.
TiltSync
This tool uses your device's sensors to help you precisely align solar panels for maximum energy production. It offers multiple alignment views and optimization modes, providing real-time feedback and haptic guidance for professional results.
- Precision interface with compass and tilt indicator
- Multiple alignment views (Dashboard, Tilt, Compass)
- Three optimization modes (Year-Round, Seasonal, Daily)
- Color-coded and haptic feedback for guidance
- Offline functionality
- Instant startup with cached GPS
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Perfect solar panel alignment in seconds. TiltSync transforms your iPhone into a precision alignment tool for solar panels. Perfect for DIYers, first-time installers, and anyone who wants professional results without the learning curve. Whether you're a homeowner installing rooftop panels, an RV enthusiast with a portable setup, or setting up your first off-grid system, TiltSync helps you maximize energy production with zero guesswork. **How it works:** Place your phone flat on your solar panel. TiltSync uses your device's accelerometer to measure tilt, the magnetometer for compass heading, and GPS for your exact location. The app calculates the optimal angle and direction, then guides you to perfect alignment with haptic feedback that intensifies as you dial it in. **Precision interface:** The main display shows a rotating compass card with your heading, a tilt indicator showing panel angle, and real-time digital readouts. It's not just functional, it's beautiful to use. **Three alignment views:** • Combined Dashboard — See tilt and compass alignment together on one screen • Tilt Mode — Classic bubble level for dialing in your angle • Compass Mode — Dedicated view for azimuth alignment with sun position marker **Three optimization modes:** • Year-Round — Set it and forget it. Best fixed angle for maximum annual production. • Seasonal — For adjustable mounts. Optimized angles for summer and winter. • Daily — Real-time sun tracking that updates every minute. Perfect for portable panels, camping, and off-grid setups where every watt counts. **Features:** • Precision interface — Compass, tilt indicator, and real-time readouts • Dark, light, and auto themes — Adapts to your preference or system setting • Color-coded feedback — Green when perfect, yellow when close, red when off • Progressive haptic guidance — Feel your way to alignment without watching the screen • Instant startup — Cached GPS location means no waiting on subsequent launches • Works fully offline — All calculations happen on-device • No account needed — Just open and align **Built for everyone:** No solar experience required. The intuitive interface guides you step-by-step, and haptic feedback tells you when you've nailed it — even if you've never aligned a panel before. High-contrast display works in direct sunlight. Dark mode for indoor prep, light mode for outdoor use. Whether you're on a roof, in a field, or at a campsite, TiltSync works where you work. Stop guessing. Start generating.
Screenshots
Verdict
The clearest difference is review sentiment: TiltSync at 100% against PV Optimizer & Solar compass's 54%. TiltSync also leads on rating (5.0 vs 4.5) and in-app purchases (none vs 1). PV Optimizer & Solar compass's advantage is ratings volume (247 vs 4). On price, ads, device support and iOS requirement 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
Both are free to download. PV Optimizer & Solar compass sells 1 one-off in-app purchase. TiltSync asks for nothing beyond the download.
TiltSync holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: PV Optimizer & Solar compass has 247 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 54% of PV Optimizer & Solar compass's written reviews are positive against 100% of TiltSync's.
PV Optimizer & Solar compass ships an update every 2 months, TiltSync every 2 days. The most recent releases landed on October 13, 2026 and September 29, 2026 respectively.
| Parameter | PV Optimizer & Solar compass | TiltSync |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (247 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 53.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 247 — better | 4 |
| Update frequency | Every 2 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 14.1 — better | 15.1 |
| Further details — not scored | ||
| Size | 5 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Joao Caetano | Daniel Smith |
Customer experience
PV Optimizer & Solar compass
TiltSync
Bugs and requests
PV Optimizer & Solar compass
Reported bugs
9 issues- Guide feature doesn't show on opening page
- Pop-up ads do not close
- Error: iPhone gyroscope off
- Error: Downloading relevant data
- Graph scale breaks down for yearly output
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- Over 7MWH graph shows 1s and 0s
- Crashes on iOS 8.4
- Crashes instantly after opening
- Crashes a few seconds after startup
Requested features
7 requests- More guidance and clarity
- Option for shorter time periods (day/week)
- Adjustment for time settings (night alignment)
- Loss calculation for incorrect orientation
- Option to reverse phone orientation
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- Ability to get azimuth/tilt for arbitrary date/time
- Setting for inverter clipping
TiltSync
Not enough reviews yet to summarise bugs or requests.
In-app purchases
PV Optimizer & Solar compass
- Remove ads$0.99
TiltSync
No in-app purchases
Questions
Is PV Optimizer & Solar compass free?
Is TiltSync free?
Which has better reviews, PV Optimizer & Solar compass or TiltSync?
Do PV Optimizer & Solar compass or TiltSync have ads?
Which is updated more often, PV Optimizer & Solar compass or TiltSync?
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