# NASA vs Chronos Notes

The clearest difference is price: NASA at Free against Chronos Notes's $0.99. NASA also leads on rating (4.8 vs 4.0) and update cadence (every 2 weeks vs every 9 months). Chronos Notes's advantage is review sentiment (100% vs 70%). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

NASA is free to download; Chronos Notes costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

NASA holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: NASA has 64K ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 70% of NASA's written reviews are positive against 100% of Chronos Notes's, so the app with the better star average is not the one people write more warmly about.

NASA ships an update every 2 weeks, Chronos Notes every 9 months. The most recent releases landed on September 26, 2026 and June 6, 2026 respectively.

## The numbers

| Metric | NASA | Chronos Notes |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.8 (64K ratings)](https://appshunter.io/ios/app/nasa/id334325516/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/chronos-notes/id687105675/reviews) |
| Number of ratings | **64K** | 1 |
| Positive reviews | 69.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 9 months |
| Monetization | **Free** | Paid |
| Size | 60 MB | 6 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod, Apple TV** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NASA](https://appshunter.io/developer/355542146) | [Jan-Wouter Arendsen](https://appshunter.io/developer/432769119) |

## What reviewers say

### NASA

[App page](https://appshunter.io/ios/app/nasa/id334325516)

Explore the universe with access to live and on-demand NASA+ videos, a vast collection of stunning images, and the latest mission news. Discover interactive augmented reality experiences and track the International Space Station's path.

**Highlights:** NASA+ video streaming, 21,000+ NASA images, Latest NASA news, Mission updates, Podcasts, ISS tracking and Sky View, Augmented reality experiences

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Fast loading
- 👍 Informative and educational
- 🌟 Amazing images and videos
- 💻 Great for learning about space
- 🔭 Comprehensive space information

**What reviewers complain about**

- 🐛 Crashes and freezes
- 🔍 Difficult to navigate and find content
- 📺 Missing live streaming features
- 🔄 Outdated user interface
- 🔍 Lack of search functionality

**Reported bugs**

- Crashes on launch for some devices
- Inability to close/exit image viewer
- Notifications not working as expected
- Incompatibility issues with newer iOS versions

**Requested features**

- Add live streaming of NASA TV
- Improve navigation and search
- Implement dark mode option
- Bring back old features (e.g. APOD widget, ISS sightings)
- Enhance 3D models and AR capabilities


### Chronos Notes

[App page](https://appshunter.io/ios/app/chronos-notes/id687105675)

Organize historical notes and events into a visual, chronological timeline. Create timelines for any historical period or event, navigate through them, and use tags for easy searching and filtering.

**Highlights:** Chronological timeline creation, Organize notes by date, Navigate via timeline or event list, Tagging for easy filtering, Search historical events

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NASA free?

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

### Is Chronos Notes free?

Chronos Notes costs $0.99, with no in-app purchases.

### Which has better reviews, NASA or Chronos Notes?

NASA is rated higher. NASA averages 4.8 out of 5 from 64K ratings, while Chronos Notes averages 4.0 from 1 ratings.

### Do NASA or Chronos Notes have ads?

Neither NASA nor Chronos Notes shows ads.

### Which is updated more often, NASA or Chronos Notes?

NASA ships an update every 2 weeks, and Chronos Notes every 9 months. Most recently, NASA was updated on September 26, 2026 and Chronos Notes on June 6, 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.*