Solar Activity vs Въздух БГ
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Solar Activity
Track solar activity with a forecast for magnetic storms up to 27 days in advance. View the latest images and videos of the sun, and monitor key metrics like the Kp index and sunspots.
- Magnetic storm forecast
- Kp index forecast (3-27 days)
- Aurora borealis predictions
- Sunspot tracking
- Solar wind monitoring
- Latest SOHO/SDO images & videos
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Monitor solar activity. Get a solar storm forecast for the next 3-27 days and view the latest images and videos from SOHO/SDO. Also includes: - magnetic storm forecast - Kp index forecast for 3/27 days - aurora borealis - sunspots - solar wind
Въздух БГ
Get real-time air quality data for Bulgarian cities, including fine particulate matter levels. Track air quality across the country with an integrated map and view hourly updates. Customizable widgets provide instant air quality information for selected locations without opening the app.
- Real-time air quality data
- Fine particulate matter levels
- Hourly air quality updates
- Integrated national map
- Customizable widgets
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Приложението показва подробна информация за нивата на фини прахови частици и други данни за замърсяването на въздуха в българските градове. Бързо и лесно научавате за качеството на въздуха във всеки един час. С вградена карта можете да следите състояните на въздуха над цялата страна. А с новите уиджети можете да виждате качеството на въздуха в избрани градове, без дори да отваряте приложението.
Screenshots
Verdict
The clearest difference is update cadence: Въздух БГ at monthly against Solar Activity's every 3 months. Въздух БГ also leads on review sentiment (33% vs 25%). On price, ads, in-app purchases and monetization model 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.
Solar Activity ships an update every 3 months, Въздух БГ monthly. The most recent releases landed on November 3, 2026 and November 11, 2026 respectively.
| Parameter | Solar Activity | Въздух БГ |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 25.0% of reviews | 33.3% of reviews — better |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months | Monthly — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 33 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Pavel Koyushev | Tihomir Radev |
Customer experience
Solar Activity
Въздух БГ
In-app purchases
Solar Activity
No in-app purchases
Въздух БГ
No in-app purchases
