# UTC Orbit vs On

The clearest difference is review sentiment: UTC Orbit at 100% against On's 50%. UTC Orbit also leads on rating (5.0 vs 4.4). On's advantage is update cadence (monthly vs every 8 months) and ratings volume (13 vs 2). On price, ads, in-app purchases and monetization model there is nothing between them.

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

UTC Orbit holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: On has 13 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of UTC Orbit's written reviews are positive against 50% of On's.

UTC Orbit ships an update every 8 months, On monthly. The most recent releases landed on October 2, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | UTC Orbit | On |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/utc-orbit/id1049069115/reviews)** | [4.4 (13 ratings)](https://appshunter.io/ios/app/on-air-net-scraper/id1536271710/reviews) |
| Number of ratings | 2 | **13** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Monthly** |
| Monetization | Free | Free |
| Size | 2 MB | 30 MB |
| Requires iOS | 26.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 17+ |
| Developer | [Dave Massey](https://appshunter.io/developer/1029584286) | [Christopher Robson](https://appshunter.io/developer/1536271712) |

## What reviewers say

### UTC Orbit

[App page](https://appshunter.io/ios/app/utc-orbit/id1049069115)

This utility converts between human-readable dates and a YYDDD.FFFFFF format essential for spacecraft orbital element calculations. It also features a UTC alarm clock based on the day of the year and a large digit UTC display.

**Highlights:** UTC time conversion, YYDDD.FFFFFF format display, UTC alarm clock, Day of Year alarm setting, Large digit UTC clock display, Background alarm notifications

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

**In-app purchases:** none


### On

[App page](https://appshunter.io/ios/app/on-air-net-scraper/id1536271710)

This tool assists amateur radio operators with managing on-air nets and check-ins. It offers real-time messaging, email integration, and detailed operator information retrieval. The app supports multiple simultaneous sessions and configurable displays for efficient communication and tracking.

**Highlights:** Real-time net check-in tracking, Instant messaging (AIM) sessions, Integrated email client, Configurable information displays, QRZ/QRZCQ call sign lookup, WebSDR audio streaming, QRZ Logbook integration

**In-app purchases:** none


## Frequently asked questions

### Is UTC Orbit free?

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

### Is On free?

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

### Which has better reviews, UTC Orbit or On?

UTC Orbit is rated higher. UTC Orbit averages 5.0 out of 5 from 2 ratings, while On averages 4.4 from 13 ratings.

### Do UTC Orbit or On have ads?

Neither UTC Orbit nor On shows ads.

### Which is updated more often, UTC Orbit or On?

UTC Orbit ships an update every 8 months, and On monthly. Most recently, UTC Orbit was updated on October 2, 2026 and On on October 24, 2026.

---

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