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Spot forecasts and a customizable AI forecaster on your iPhone
According to OpenAITools.app telemetry verified on 2026-11-11, NimbusWx (apps.apple.com) is an AI platform indexed under AI Assistant generating 0 monthly visits with a month-over-month traffic delta of +0 (0.0%). Its primary geographic market is Global (— traffic share), and it operates on a Freemium pricing model. Top competing alternatives by monthly volume include ChatGPT (6.05B visits/mo), Google Gemini (2.64B visits/mo), Claude (1.25B visits/mo).
Finally raw numerical models made legible on my phone.
Great charts, though the AI summaries can get repetitive.
Essential for anyone who tracks weather closely.
Decent app, but way too pricey for a weather tool.
AI-synthesized perspectives grounded in live site inspection, pricing structure, and category benchmarks — presented as editorial viewpoints rather than individual customer testimonials.
Select any coordinates on Earth and pull spot forecasts without digging through regional weather sites.
Choose and customize a ChatGPT-powered forecaster that describes conditions in words, from wildfire risk to ski conditions.
Plot and compare GFS, RDPS, HRDPS, GDPS, NAM, HRRR and RAP model data in zoomable, scrollable charts.
See each model's simulated altitude plus its spatial and temporal resolution so you know how much to trust it.
Save the places you check often for one-tap access to current charts and summaries.
NimbusWx is a spot weather forecasting app for iPhone that makes professional-grade numerical weather prediction data accessible. Most weather apps hand you a finished icon and a temperature; NimbusWx instead visualizes the raw output of the numeric models that industry experts actually use, turning data that normally requires desktop software into friendly, zoomable charts.
Where it stands apart is its AI layer. Since version 1.2 the app has included a customizable AI weather forecaster powered by ChatGPT. You control what type of weather data you care about and how the forecaster behaves, then use prompts such as asking about wildfire risk or skiing conditions, or even asking it to speak in a particular style. A 2025 update brought improved AI summaries and search for locations.
The app draws its data from SpotWx, a forecasting site used by professionals across North America and beyond. It supports the GFS, RDPS, HRDPS Continental, HRDPS 1km West, GDPS, NAM, HRRR and RAP models, letting you compare them for the same coordinates and inspect each model's simulated altitude and resolution before trusting its output.
Get quick spot forecasts for the exact trailhead, crag or site you are heading to before you set out.
Prompt the AI forecaster for a detailed 24-hour outlook or precipitation timing specific to your interests.
Compare short-range high-resolution models like HRRR or RAP alongside longer-range guidance for confident planning.
Ask targeted questions about wildfire risk, wind or snow conditions and get a readable summary.
Side-by-side telemetry comparison of competing AI tools in the same primary category
| Rank | AI Tool | Monthly Visits | MoM Growth | Direct traffic share | Pricing | Head-to-Head |
|---|---|---|---|---|---|---|
| ● | NimbusWx | 0 | — | — | Freemium | Current |
| 1 | ChatGPT | 6.05B | +2.2% | 73% direct | Freemium | vs ChatGPT |
| 2 | Google Gemini | 2.64B | -0.1% | 62% direct | Freemium | vs Google Gemini |
| 3 | Claude | 1.25B | +23.8% | 72% direct | Freemium | vs Claude |
| 4 | DeepSeek | 372.76M | +4.3% | 78% direct | Freemium | vs DeepSeek |
| 5 | Grok | 203.85M | -0.8% | 66% direct | Freemium | vs Grok |
| 6 | Hostinger AI Website Builder & Hosting | 54.53M | +3.9% | 66% direct | Paid | vs Hostinger AI Website Builder & Hosting |
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