# Aurora Forecast Northern Light vs PDFTool Lab

The clearest difference is ads: PDFTool Lab at none against Aurora Forecast Northern Light's shown. Aurora Forecast Northern Light's advantage is iOS requirement (12.0 vs 17.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Aurora Forecast Northern Light sells 4 in-app purchases, starting at $6.99 per 7 days and PDFTool Lab sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Aurora Forecast Northern Light ships an update monthly, PDFTool Lab fortnightly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Aurora Forecast Northern Light | PDFTool Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/aurora-forecast-northern-light/id6714457055/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 89 MB | 67 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tejas Shah](https://appshunter.io/developer/1770005220) | [ASAPP STUDIO](https://appshunter.io/developer/1338092352) |

## What reviewers say

### Aurora Forecast Northern Light

[App page](https://appshunter.io/ios/app/aurora-forecast-northern-light/id6714457055)

Track and predict northern lights visibility with real-time updates and location-based forecasts. See aurora activity on a map, get personalized alerts, and check the KP index for geomagnetic activity. Stay informed about the sun's state for optimal viewing.

**Highlights:** Real-time aurora activity updates, Location-based visibility predictions, Map view of aurora activity, Personalized aurora alerts, Detailed KP index readings, Current sun state information

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Aurora Lights One Week | $6.99 | per 7 days |
| Aurora Lights One Month | $19.99 | per month |
| Aurora Lights One Year | $44.99 | per year |
| Aurora Lights Lifetime | $34.99 | one-time |


### PDFTool Lab

[App page](https://appshunter.io/ios/app/pdftool-lab/id6757402188)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDFTool Premium | $0.99 | one-time |


## Frequently asked questions

### Is Aurora Forecast Northern Light free?

Aurora Forecast Northern Light is free to download, with in-app purchases available.

### Is PDFTool Lab free?

PDFTool Lab is free to download, with in-app purchases available.

### Do Aurora Forecast Northern Light or PDFTool Lab have ads?

Aurora Forecast Northern Light shows ads; PDFTool Lab does not.

### Which is updated more often, Aurora Forecast Northern Light or PDFTool Lab?

Aurora Forecast Northern Light ships an update monthly, and PDFTool Lab fortnightly. Most recently, Aurora Forecast Northern Light was updated on October 24, 2026 and PDFTool Lab on October 25, 2026.

---

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