# Sputnik! vs On

The clearest difference is review sentiment: Sputnik! at 92% against On's 50%. Sputnik! also leads on rating (4.7 vs 4.4) and ratings volume (732 vs 13). On's advantage is in-app purchases (none vs 1) and update cadence (monthly vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Sputnik! sells 1 one-off in-app purchase. On asks for nothing beyond the download.

Sputnik! holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Sputnik! has 732 ratings behind it against 13, so its average is the more settled of the two. Written reviews point the same way: 92% of Sputnik!'s written reviews are positive against 50% of On's.

Sputnik! ships an update every 5 months, On monthly. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Sputnik! | On |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (732 ratings)](https://appshunter.io/ios/app/sputnik/id393001070/reviews)** | [4.4 (13 ratings)](https://appshunter.io/ios/app/on-air-net-scraper/id1536271710/reviews) |
| Number of ratings | **732** | 13 |
| Positive reviews | **92.2% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | Ad-supported | **Free** |
| Size | 35 MB | 30 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPod, Apple Watch | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 17+ |
| Developer | [Applicate Ltd](https://appshunter.io/developer/299117183) | [Christopher Robson](https://appshunter.io/developer/1536271712) |

## What reviewers say

### Sputnik!

[App page](https://appshunter.io/ios/app/sputnik/id393001070)

Track the International Space Station and bright satellites with precise timing and location data. Get second-by-second countdowns, set reminders, and view satellite paths in the night sky. Supports offline calculations and sharing sightings.

**Highlights:** Accurate satellite and ISS sighting predictions, Starlink satellite train detection, Second-by-second countdowns, Sighting reminders, Compass direction and elevation display, Night sky path visualization, Offline calculations

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Go ad-free | $0.99 | one-time |

**What reviewers like**

- 🚀 Accurate satellite tracking
- 👍 Easy to use interface
- 🔭 Supports tracking of various satellites (ISS, Hubble, Starlink)
- ⏰ Provides countdown and reminders for sightings

**What reviewers complain about**

- 🐛 App not working/crashing for some users
- 🔍 Unclear information about satellite visibility (e.g. what 'enters Earth's shadow' means)
- 🔧 Difficulty updating satellite data
- 🙈 Dark mode text visibility issues

**Reported bugs**

- App reporting 'No Sightings' for all categories
- Null check errors when selecting satellite sightings
- Issues with location settings and data updates

**Requested features**

- Add support for more satellite types
- Improve sky chart visualization and orientation
- Provide filtering options (e.g. by elevation, magnitude)
- Implement automatic data updates


### 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 Sputnik! free?

Sputnik! is free to download, with in-app purchases available.

### Is On free?

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

### Which has better reviews, Sputnik! or On?

Sputnik! is rated higher. Sputnik! averages 4.7 out of 5 from 732 ratings, while On averages 4.4 from 13 ratings.

### Do Sputnik! or On have ads?

Neither Sputnik! nor On shows ads.

### Which is updated more often, Sputnik! or On?

Sputnik! ships an update every 5 months, and On monthly. Most recently, Sputnik! was updated on October 21, 2026 and On on October 24, 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.*