# Solar Activity Pro vs Eclipse Timer

The clearest difference is in-app purchases: Eclipse Timer at none against Solar Activity Pro's 3. Eclipse Timer also leads on update cadence (every 3 days vs every 2 weeks) and iOS requirement (15.1 vs 17). On price, ads and device support there is nothing between them.

Both are free to download. Solar Activity Pro sells 3 in-app purchases, starting at $2.99 per month. Eclipse Timer asks for nothing beyond the download.

Solar Activity Pro ships an update every 2 weeks, Eclipse Timer every 3 days. The most recent releases landed on October 6, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Solar Activity Pro | Eclipse Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/solar-activity-pro/id1545198636/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Monetization | Subscription | — |
| Size | 51 MB | 29 MB |
| Requires iOS | 17 | **15.1** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pavel Koyushev](https://appshunter.io/developer/1257728721) | [Lalit Sharma](https://appshunter.io/developer/1878357593) |

## What reviewers say

### Solar Activity Pro

[App page](https://appshunter.io/ios/app/solar-activity-pro/id1545198636)

Monitor solar activity and its potential effects on well-being and technology. Get aurora forecasts, real-time data, and customizable widgets. Stay informed about space weather events with detailed indicators and notifications.

**Highlights:** Widgets for solar activity, Push notifications, Aurora forecast and cameras, KP and AP index tracking, Solar wind and electron/proton flux data, Sunspot and electron content maps

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $2.99 | per month |
| 3 Months subscription | $6.99 | per 3 months |
| Yearly subscription | $17.99 | per year |


### Eclipse Timer

[App page](https://appshunter.io/ios/app/eclipse-timer/id6759380856)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Solar Activity Pro free?

Solar Activity Pro is free to download, with in-app purchases available.

### Is Eclipse Timer free?

Eclipse Timer is free to download, with no in-app purchases.

### Do Solar Activity Pro or Eclipse Timer have ads?

Neither Solar Activity Pro nor Eclipse Timer shows ads.

### Which is updated more often, Solar Activity Pro or Eclipse Timer?

Solar Activity Pro ships an update every 2 weeks, and Eclipse Timer every 3 days. Most recently, Solar Activity Pro was updated on October 6, 2026 and Eclipse Timer on October 4, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*