# Solar System Clock vs Nummeric

The clearest difference is in-app purchases: Nummeric at none against Solar System Clock's 1. Nummeric also leads on update cadence (every 4 days vs every 5 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Solar System Clock sells 1 one-off in-app purchase. Nummeric asks for nothing beyond the download.

Solar System Clock ships an update every 5 weeks, Nummeric every 4 days. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Solar System Clock | Nummeric |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/nummeric-calculator-and-solver/id6765857310/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 4 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 26 MB | 17 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Sunita George](https://appshunter.io/developer/1777332550) | [Honorius Neogy](https://appshunter.io/developer/1848006155) |

## What reviewers say

### Solar System Clock

[App page](https://appshunter.io/ios/app/solar-system-clock/id6737652569)

Explore the time and positions of celestial bodies across our solar system. View analog and digital clocks for planets, dwarf planets, and moons, with interactive maps and customizable widgets. Understand planetary seasons and translate times between objects.

**Highlights:** Planet and moon time displays, Analog and digital clock formats, Interactive solar system map, Customizable widgets, Planetary season information, Time translation between celestial bodies

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Planets and Dwarf Planets | $2.99 | one-time |


### Nummeric

[App page](https://appshunter.io/ios/app/nummeric-calculator-and-solver/id6765857310)

A versatile calculator and solver offering a wide range of specialized tools, graphing capabilities, and step-by-step solutions. It supports unit conversion, a notebook for mathematical expressions, and is available across multiple Apple devices without ads or subscriptions.

**Highlights:** 214 specialty calculators, Graphing up to 10 equations, Step-by-step solver, Unit converter, Notebook for math expressions, Cross-device compatibility

**Features:** iMessage stickers, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Solar System Clock free?

Solar System Clock is free to download, with in-app purchases available.

### Is Nummeric free?

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

### Do Solar System Clock or Nummeric have ads?

Neither Solar System Clock nor Nummeric shows ads.

### Which is updated more often, Solar System Clock or Nummeric?

Solar System Clock ships an update every 5 weeks, and Nummeric every 4 days. Most recently, Solar System Clock was updated on October 30, 2026 and Nummeric on November 5, 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.*