# Sputnik! vs Chess Clock App

The clearest difference is review sentiment: Sputnik! at 92% against Chess Clock App's 0%. Sputnik! also leads on price (Free vs $0.99) and rating (4.7 vs 1.0). Chess Clock App's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

Sputnik! is free to download; Chess Clock App costs $0.99 up front. Sputnik! sells 1 one-off in-app purchase. Chess Clock App asks for nothing beyond the download.

Sputnik! holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: Sputnik! has 731 ratings behind it against 1, 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 0% of Chess Clock App's.

Sputnik! ships an update every 5 months, Chess Clock App every 11 months. The most recent releases landed on October 2, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Sputnik! | Chess Clock App |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.7 (731 ratings)](https://appshunter.io/ios/app/sputnik/id393001070/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/chess-clock-app/id477121710/reviews) |
| Number of ratings | **731** | 1 |
| Positive reviews | **92.2% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 11 months |
| Monetization | **Ad-supported** | Paid |
| Size | 35 MB | 19 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Applicate Ltd](https://appshunter.io/developer/299117183) | [Piet Jonas](https://appshunter.io/developer/288060167) |

## 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


### Chess Clock App

[App page](https://appshunter.io/ios/app/chess-clock-app/id477121710)

This application functions as a dual-clock timer for two players, ideal for games like chess. It precisely tracks each player's move time, ensuring fair play and preventing excessive delays. The timer can count down or up, and features a pause function for both players.

**Highlights:** Dual-player time tracking, Count down or count up timer, Pause functionality, Background operation, Individual time settings

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sputnik! free?

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

### Is Chess Clock App free?

Chess Clock App costs $0.99, with no in-app purchases.

### Which has better reviews, Sputnik! or Chess Clock App?

Sputnik! is rated higher. Sputnik! averages 4.7 out of 5 from 731 ratings, while Chess Clock App averages 1.0 from 1 ratings.

### Do Sputnik! or Chess Clock App have ads?

Neither Sputnik! nor Chess Clock App shows ads.

### Which is updated more often, Sputnik! or Chess Clock App?

Sputnik! ships an update every 5 months, and Chess Clock App every 11 months. Most recently, Sputnik! was updated on October 2, 2026 and Chess Clock App on September 16, 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.*