# Solar Calibrator — Panel Tilt & Sizing Calculator > Offline solar PV installation toolkit for calibration, sizing, and quoting. (iPhone/iPad app by Fawzi Fakhro.) - Source: https://appshunter.io/ios/app/solar-calibrator/id1636630984 (this page in markdown: same URL + `.md`) - Developer: [Fawzi Fakhro](https://appshunter.io/developer/1636630986) - Category: Utilities, Productivity - Price: $9.99 - Rating: 5.00/5 from 2 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 15.1 · 40 MB - Languages: American English, Arabic - Released: 2022-07-29 - Data updated: 2026-11-12 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/solar-calibrator/id1636630984/reviews.md ## What is Solar Calibrator? Solar Calibrator is a field toolkit for solar installers and serious DIYers. Set the tilt and direction, size the array, battery bank and cables, check strings and shading, then hand the customer a PDF quote, all from one app. One purchase. No ads, no subscription, no account. TILT ANGLE Lay your phone on the panel and use it as a digital level. Get the best year-round angle for your latitude from published formulas, plus seasonal angles for summer and winter, and which way the panels should face. ORIENTATION A smooth, damped compass that tells you when the array faces the equator: south in the northern hemisphere, north in the southern. PV ARRAY SIZING Enter monthly usage in kWh and the share of the bill you want to offset. Peak sun hours are estimated from your GPS location, so there is nothing to look up. You get system size in kW, number of panels and roof area needed. BATTERY BANK Size off-grid and backup storage from monthly usage, backup hours and system voltage. Lithium or lead-acid, with depth of discharge and efficiency built in. WIRE GAUGE Get the right cable size, in AWG and mm², from current, run length and system voltage, for copper or aluminum. It checks both current capacity and voltage drop, and tells you which one set the size. STRING SIZING Find the maximum panels in series without exceeding the inverter's voltage limit on the coldest morning, using panel Voc and temperature coefficient. Add Vmp and the MPPT minimum to get a full min–max range for hot days too. LOAD AUDIT List appliances with quick-add presets and realistic hours per day to get total daily consumption before you size anything. SHADING CHECK Enter the height of a tree or building and its distance to see whether it will shade the panels at the winter solstice, when the sun is lowest. QUOTES Build a customer quote on site: • Search a catalog of common solar parts or reuse recent items with their last price • Hardware and Other sections, with labor as a fixed amount or a % of hardware • Save quotes and reopen them later • Export a clean, professional PDF named after the customer and date BUILT FOR THE JOB • Every result shows the working behind the number • Export any calculation as a PDF report • Currency set from your region, or choose your own • 7 languages: English, Arabic, Hindi, Urdu, Spanish, French and Uzbek, with full right-to-left support • Dark mode for bright sun and dim attics Results are estimates for planning. Always follow local electrical codes and the equipment manufacturer's specifications. ## Key features - Solar compass and tilt angle calibration - Battery and inverter sizing - Wire gauge calculation - Load audit and quote builder - PV array and string sizing - Obstruction analysis - Offline functionality ## Is Solar Calibrator safe? Not enough ratings yet to assess Solar Calibrator. ## Is Solar Calibrator legit? Solar Calibrator appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Solar Calibrator is 78 out of 100 points across 7 verification signals from App Store and developer data. ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/solar-calibrator/id1636630984/reviews.md ### 5/5 — Really useful tool for PV Pros *2026-01-08* A ton of handy tools all in one place, an easy way to calculate wire sizes, roof angles, battery sizing, even now including a quoting tool although I haven’t played around with this much. ## Frequently asked questions about Solar Calibrator ### What is Solar Calibrator used for? Solar Calibrator is a professional toolkit for PV installers. It helps with precise panel angle calibration, battery and wire sizing, load auditing, and generating client quotes, all designed for offline use. ### Does Solar Calibrator work offline? Yes, Solar Calibrator is designed to function entirely without an internet connection, making it ideal for field use where connectivity may be limited. ### What devices support Solar Calibrator? Solar Calibrator is available for iPhone and iPod devices. It is rated for ages 4 and up. ### How much does Solar Calibrator cost? Solar Calibrator is a paid application, with a price of $9.99. There are no in-app purchases or advertisements. ### How often is Solar Calibrator updated? The latest version, 2.0.1, was released on January 4, 2026. Previous updates indicate a commitment to improving features and usability for solar professionals. ### Can Solar Calibrator help with quoting for clients? Yes, Solar Calibrator includes a Load Audit & Quote Builder tool that allows you to create a complete appliance load profile and generate instant PDF estimates to share with clients. ### What kind of battery profiles does Solar Calibrator support? Solar Calibrator supports battery and inverter sizing calculations for both Lithium (LiFePO4) and Lead-Acid battery profiles, helping you determine exact off-grid storage needs. ### Does Solar Calibrator have ads? No, Solar Calibrator does not contain advertisements. It is a paid application focused on providing professional tools without interruption. ## Version history (last 5 releases) ### 2.1.0 — 2026-11-08 Version 2.1 brings a rebuilt Quote tool and more precise calculators. QUOTES • Quotes save automatically. Open, continue or delete them from Saved Quotes. • Add items from a searchable catalog or your recent items, with their last price. • Lines are grouped into Hardware and Other. Long-press a line to move it. • Labor as a fixed amount or a percentage of hardware. • New PDF: quote number, date, valid-until, customer, grouped table and one grand total. CURRENCY • Your currency is picked from your region, with correct symbols and grouping (including lakh grouping for INR, PKR, BDT and NPR). • Choose another in Settings → Currency. Each quote keeps the currency it was made in. CALCULATORS • Every result now shows the working behind the number. • Array: enter your panel wattage to get the panel count, installed kW and panel area. • Battery: sizing now accounts for depth of discharge (lithium vs. lead acid), so results are more realistic. • String sizing: add Vmp and the MPPT minimum to get a minimum and maximum string length. • Tilt: year-round angle from published formulas, plus which way to face your panels. • Obstruction: works at the equator and for sites where the winter sun stays below the horizon. ALSO • Now in Hindi, Urdu, Spanish, French and Uzbek. • Smoother keyboard handling and scrolling in long lists. • Bug fixes and stability improvements. ### 2.0.1 — 2026-01-04 We've Gone Pro! (Ad-Free Experience) Solar Calibrator is now a fully premium utility. We have completely removed all advertisements to ensure a faster, cleaner, and strictly professional workflow. No distractions—just tools. Also in this update: • Precision Compass: Tuned with new dampening algorithms for smoother, more accurate orientation. • Smart Tilt Tool: Added "Spirit Level" snapping for faster angle calibration. • Quote Generator: Create and export professional PDF quotes for your clients directly from the app. • Localization: Full support for Arabic and English languages. • Performance: Optimized scrolling and reduced battery usage. ### 2.0.0 — 2025-12-12 Major Update: v2.0 - The "Pro Tool" Overhaul We've rebuilt the app from the ground up to be faster, darker, and more professional. New Look: "Field Mode" Dark interface for better visibility outdoors. New Tool: Quote Calculator – Generate and export PDF estimates instantly. New Tool: Obstruction Analysis – Check for shading risks before you install. New Tool: String Sizing – Calculate safe Voc limits for cold weather. Improved Compass: Now features "True North" correction and sensor smoothing for steady alignment. Professional Reports: Export any calculation as a detailed PDF. ### 1.1.0 — 2024-04-28 What's New ---------------------- Bug fixes and performance improvements. More accurate calculation based on user location. Added 2 new calculators to calculate the number of solar panels needed and capacity of batteries as well as inverter power rating Stay tuned for upcoming features! Love the app? Don't forget to leave us a review! ### 1.0.5 — 2023-02-13 -Bug Fixes ## Apps similar to Solar Calibrator | App | Rating | Price | Category | | --- | --- | --- | --- | | [SenserAlign](https://appshunter.io/ios/app/senseralign/id1254219811) | 4.4 (5) | Free | Utilities | | [PV Master - Solar Panel System](https://appshunter.io/ios/app/pv-master-solar-panel-system/id396636193) | 4.3 (23) | Free | Utilities | | [BASEN GREEN IRAQ](https://appshunter.io/ios/app/basen-green-iraq/id6764165068) | 5.0 (2) | Free | Utilities | | [Solar PV Forecast & Alerts](https://appshunter.io/ios/app/solar-pv-forecast-and-alerts/id6479313475) | 3.9 (38) | Free | Utilities | | [Energy-Mate](https://appshunter.io/ios/app/energy-mate/id1672569936) | 4.2 (13) | Free | Utilities | | [PACEEX BMS](https://appshunter.io/ios/app/paceex-bms/id6461723294) | 2.1 (8) | Free | Utilities | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-12.*