# NL vs Observation

The clearest difference is ads: Observation at none against NL's shown. Observation also leads on update cadence (every 2 weeks vs every 5 months) and iOS requirement (15.1 vs 17.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

NL ships an update every 5 months, Observation every 2 weeks. The most recent releases landed on September 29, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | NL | Observation |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Size | 74 MB | 80 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Politie](https://appshunter.io/developer/1812846463) | [Stichting Observation International](https://appshunter.io/developer/1464543487) |

## What reviewers say

### NL

[App page](https://appshunter.io/ios/app/nl-alert/id6443585319)

**In-app purchases:** none


### Observation

[App page](https://appshunter.io/ios/app/observation/id6446407612)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is NL free?

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

### Is Observation free?

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

### Do NL or Observation have ads?

NL shows ads; Observation does not.

### Which is updated more often, NL or Observation?

NL ships an update every 5 months, and Observation every 2 weeks. Most recently, NL was updated on September 29, 2026 and Observation on October 10, 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.*