# Back in Time vs Solar System&Celestial Objects

The clearest difference is price: Solar System&Celestial Objects at Free against Back in Time's $7.99. Solar System&Celestial Objects also leads on update cadence (every 6 weeks vs every 7 months) and device support (3 vs 1). Back in Time's advantage is ads (none vs shown). On in-app purchases there is nothing between them.

Solar System&Celestial Objects is free to download; Back in Time costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Back in Time ships an update every 7 months, Solar System&Celestial Objects every 6 weeks. The most recent releases landed on October 7, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Back in Time | Solar System&Celestial Objects |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | **[4.6 (25 ratings)](https://appshunter.io/ios/app/back-in-time/id450345693/reviews)** | — |
| Number of ratings | **25** | — |
| Positive reviews | 83.7% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 6 weeks** |
| Monetization | Paid | — |
| Size | 836 MB | 62 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Landka](https://appshunter.io/developer/450345696) | [NIKI TECH](https://appshunter.io/developer/1788609104) |

## What reviewers say

### Back in Time

[App page](https://appshunter.io/ios/app/back-in-time/id450345693)

Explore the history of the Universe, Earth, Life, and Civilization through an immersive, interactive journey. This app uses custom animations, timelines, and interesting facts to bring historical events to life. It's designed to help users understand the connections between events and see the bigger picture.

**Highlights:** Interactive timeline of events, Custom animations and videos, Over 350 remarkable images, Little-known interesting facts, Offline access, Multilingual support

**Features:** macOS Compatibility

**In-app purchases:** none


### Solar System&Celestial Objects

[App page](https://appshunter.io/ios/app/solar-system-and-celestial-objects/id6503188651)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Back in Time free?

Back in Time costs $7.99, with no in-app purchases.

### Is Solar System&Celestial Objects free?

Solar System&Celestial Objects is free to download, with no in-app purchases.

### Do Back in Time or Solar System&Celestial Objects have ads?

Solar System&Celestial Objects shows ads; Back in Time does not.

### Which is updated more often, Back in Time or Solar System&Celestial Objects?

Back in Time ships an update every 7 months, and Solar System&Celestial Objects every 6 weeks. Most recently, Back in Time was updated on October 7, 2026 and Solar System&Celestial Objects on October 2, 2026.

---

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