# Exonaut Observer vs NTB Lens

The clearest difference is update cadence: NTB Lens at monthly against Exonaut Observer's every 4 months. Exonaut Observer's advantage is iOS requirement (10.3 vs 15.6). On price, ads, 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.

Exonaut Observer ships an update every 4 months, NTB Lens monthly. The most recent releases landed on October 8, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Exonaut Observer | NTB Lens |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/exonaut-observer/id917304030/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Free | — |
| Size | 46 MB | 53 MB |
| Requires iOS | **10.3** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [4C Group AB](https://appshunter.io/developer/917304029) | [Norsk Telegrambyrå AS](https://appshunter.io/developer/639999719) |

## What reviewers say

### Exonaut Observer

[App page](https://appshunter.io/ios/app/exonaut-observer/id917304030)

This business tool enables organizations to manage incidents, conduct inspections, and collect intelligence from any location. It facilitates structured communication, reporting, and real-time collaboration, with offline access to critical information.

**Highlights:** Manage incidents and crises, Perform on-site inspections, Collect structured intelligence, Connect observations to assets, Access critical information offline, Real-time collaboration and location sharing

**In-app purchases:** none


### NTB Lens

[App page](https://appshunter.io/ios/app/ntb-lens/id1511689460)

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

**In-app purchases:** none


## Frequently asked questions

### Is Exonaut Observer free?

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

### Is NTB Lens free?

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

### Do Exonaut Observer or NTB Lens have ads?

Neither Exonaut Observer nor NTB Lens shows ads.

### Which is updated more often, Exonaut Observer or NTB Lens?

Exonaut Observer ships an update every 4 months, and NTB Lens monthly. Most recently, Exonaut Observer was updated on October 8, 2026 and NTB Lens on October 30, 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.*