# Mars Rock E vs Pluto Timer Lite

The clearest difference is update cadence: Mars Rock E at monthly against Pluto Timer Lite's every 4 months. Mars Rock E also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

Mars Rock E ships an update monthly, Pluto Timer Lite every 4 months. The most recent releases landed on October 3, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Mars Rock E | Pluto Timer Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pluto-timer-lite/id6756594853/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | — | Free |
| Size | 22 MB | 32 MB |
| Requires iOS | **15.5** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Xiamen Mars Rock Science Technology Co.,Ltd](https://appshunter.io/developer/1787113189) | [Shawn Gallagher](https://appshunter.io/developer/1848586448) |

## What reviewers say

### Mars Rock E

[App page](https://appshunter.io/ios/app/mars-rock-e/id6739800863)

**Features:** macOS Compatibility

**In-app purchases:** none


### Pluto Timer Lite

[App page](https://appshunter.io/ios/app/pluto-timer-lite/id6756594853)

This app calculates and notifies you of 'Pluto Time,' a brief period each day when Earth's illumination matches high noon on Pluto. It offers location-based timing, comparison for different cities, and customizable notifications.

**Highlights:** Automatic Pluto Time calculation, Location-based timing, Compare Pluto Times globally, Customizable notifications, Dynamic and static location options, Accurate planetary textures

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

**In-app purchases:** none


## Frequently asked questions

### Is Mars Rock E free?

Mars Rock E is free to download, with no in-app purchases.

### Is Pluto Timer Lite free?

Pluto Timer Lite is free to download, with no in-app purchases.

### Do Mars Rock E or Pluto Timer Lite have ads?

Neither Mars Rock E nor Pluto Timer Lite shows ads.

### Which is updated more often, Mars Rock E or Pluto Timer Lite?

Mars Rock E ships an update monthly, and Pluto Timer Lite every 4 months. Most recently, Mars Rock E was updated on October 3, 2026 and Pluto Timer Lite on September 27, 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.*