Julia Roma vs Solmeus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Julia Roma
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Julia is the official AI of Roma Capitale. It’s completely free and accompanies you before, during, and after your stay in Rome. Available 24/7 and in more than 80 languages, Julia helps you discover the city, get around, and find official, up-to-date and reliable information in just a few seconds. Whether you are visiting Rome for the first time or already know the city, Julia makes every experience easier, more personalised, and seamless. With Julia, you can: • find restaurants, cafés, shops, hotels, services and points of interest; • discover monuments, squares, museums and the city’s iconic landmarks; • get personalised recommendations on what to see based on your interests, the time you have available and your location; • get information about events, exhibitions, performances, cinemas and other initiatives taking place during your stay; • plan your trips around the city with information on public transport, mobility and routes; • easily find useful nearby essential services, such as drinking fountains, public toilets, pharmacies, hospitals, post offices, and much more; • receive personalised answers based on your location, if you allow location access; • talk to Julia using your voice, just like in a normal conversation; • interact naturally using text, voice, or images; • access official information about Roma Capitale’s services and access its digital platforms through authentication. Thanks to generative AI, Julia understands natural language, so you can ask her about anything, just as you would ask a person – about a monument in front of you, the best itinerary for the day, a nearby museum opening times, or a restaurant that best suits your needs. Julia App is your gateway to Rome’s digital ecosystem: a single app to help you discover the city, find your way around, access services and experience Rome based on official, reliable and up-to-date information. The app is constantly updated with new features and services to enrich your experience and make Rome easier to explore.
Solmeus
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The sun belongs to everyone — and Solmeus shows you what your share of it is worth. Engineering-grade precision in your iPhone. Personalised by what you actually have — your surface, your angle, your shadows, your surroundings, your bill. Not by your postcode. Free for everyone, no ads. Point your iPhone at any surface — a roof, a facade, a carport, a plot of land — and in 30 seconds Solmeus measures it, captures the sky and obstacles around it, and shows how much energy solar panels would generate there, how much they would save you each year, and when they would pay back. WHY THIS ISN'T AN ONLINE CALCULATOR Online calculators guess your roof from a satellite photo and use typical consumption. They miss the trees, the obstacles, the shadows that drop half your morning yield. Solmeus measures your actual surface, scans your obstacles, reads your real bill if you give it one. That's the difference between "solar should pay back in about 8 years for homes like yours" and "X kWh and Y years on this exact roof at this exact azimuth with this exact shadow." FREE FOR PERSONAL USE — IN FULL Solmeus is fully free for homeowners and anyone evaluating solar on their own surface — every feature available, no ads, no in-app purchases gating the report, no daily limits, no paywall. The Pro tier exists separately for solar installers and businesses; it changes nothing for personal users. PRECISION YOU CAN STAND BEHIND - AR surface measurement — your iPhone camera (and LiDAR, when available) measures area, tilt and orientation with sub-degree precision - Sky and obstacle scan — records the trees, buildings and obstacles around your site to model shading through the day - Honest physics, hour by hour — for every hour of the year Solmeus computes the real physics of sunlight on your surface: direct, diffuse and reflected radiation, the sun's path, shading from the obstacles you scanned - Two-layer climate data — authoritative satellite climate data combined with Solebo's own honest global climate model, built for Planet Mood: Earth, which also serves as a transparent offline baseline - Personalised by your bill — optionally scan or upload your electricity bill; the estimate then uses your real tariff and consumption - Honest financial model — yearly generation, savings, payback, every assumption visible - Four scenarios — panels, panels + battery, grid export, full self-consumption - Report Quality score 0–100% — every report tells you how confident the estimate is and why - Shareable PDF report THE NAME Solmeus comes from Latin sol meus — "my sun". The sun above you is yours; you have the right to know what it's worth. PRIVACY BY DESIGN No ads. No analytics. No tracking. No third-party SDKs. No user account. Your camera scans, AR measurements and electricity bill content stay on your device. The only thing Solmeus sends off your phone is your approximate location, to a public European climate-data service, only to retrieve solar irradiance for your site. LANGUAGES English · Ελληνικά · Русский · Español · Deutsch · Français · Italiano · Português · 日本語 · ไทย REQUIREMENTS iOS 17.6+. LiDAR-equipped iPhones (iPhone 12 Pro and later) give the most precise measurements but are not required. IMPORTANT Figures shown by Solmeus are indicative estimates based on satellite climate data and the information you provide. Actual results depend on hardware, installation quality, weather, future tariff changes and other factors. Solmeus is a planning tool, not a guarantee. Consult a qualified installer before any purchase decision. — Built by Solebo Ltd. No ads. No data sold. Support · info@solebo.org Privacy Policy · https://solebo.org/solmeus-privacy-policy/ Terms & Conditions · https://solebo.org/solmeus-terms-and-conditions/
Screenshots
Verdict
The clearest difference is device support: Julia Roma at 3 against Solmeus's 1. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Julia Roma | Solmeus |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, Apple Watch — better | iPhone |
| Requires iOS | 18.6 | 17.6 — better |
| Further details — not scored | ||
| Size | 59 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Roma Capitale | Solebo LTD |
In-app purchases
Julia Roma
No in-app purchases
Solmeus
No in-app purchases









