iSolar vs TiltSync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iSolar
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Are you realizing a solar plant but you don't know how to direct your panel? No more problems with iSolar! iSolar allows you to calculate the best orientation for your photovoltaic panels according to the season.
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 price: TiltSync at Free against iSolar's $0.99. TiltSync also leads on ads (none vs shown) and update cadence (every 2 days vs fortnightly). On in-app purchases 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
TiltSync is free to download; iSolar costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
iSolar ships an update fortnightly, TiltSync every 2 days. The most recent releases landed on October 9, 2026 and September 29, 2026 respectively.
| Parameter | iSolar | TiltSync |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Fortnightly | Every 2 days — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 18.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 9 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Alain Lima | Daniel Smith |
In-app purchases
iSolar
No in-app purchases
TiltSync
No in-app purchases









