# Back in Time for iPhone vs Calibracion

The clearest difference is price: Calibracion at Free against Back in Time for iPhone's $4.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

Calibracion is free to download; Back in Time for iPhone costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 8 months. The most recent releases landed on October 23, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Back in Time for iPhone | Calibracion |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[3.8 (16 ratings)](https://appshunter.io/ios/app/back-in-time-for-iphone/id483148811/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 71.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | Every 8 months |
| Monetization | Paid | — |
| Size | 625 MB | 4 MB |
| Requires iOS | **16.0** | 16.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Landka](https://appshunter.io/developer/450345696) | [Universidad de Costa Rica](https://appshunter.io/developer/1239504636) |

## What reviewers say

### Back in Time for iPhone

[App page](https://appshunter.io/ios/app/back-in-time-for-iphone/id483148811)

Explore the history of the universe, Earth, life, and civilization through interactive timelines, stunning visuals, and custom animations. This app offers an immersive learning experience with social and historical context for key events.

**Highlights:** Interactive timelines, Over 350 images, 60+ animations and videos, 200+ interesting facts, Offline access, Multilingual support

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

**In-app purchases:** none


### Calibracion

[App page](https://appshunter.io/ios/app/calibracion/id6745221710)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Back in Time for iPhone free?

Back in Time for iPhone costs $4.99, with no in-app purchases.

### Is Calibracion free?

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

### Do Back in Time for iPhone or Calibracion have ads?

Neither Back in Time for iPhone nor Calibracion shows ads.

### Which is updated more often, Back in Time for iPhone or Calibracion?

Back in Time for iPhone ships an update every 8 months, and Calibracion every 8 months. Most recently, Back in Time for iPhone was updated on October 23, 2026 and Calibracion on October 7, 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.*