# Back in Time for iPhone vs eMathMind

The clearest difference is price: eMathMind at Free against Back in Time for iPhone's $4.99. eMathMind also leads on update cadence (every 3 weeks vs every 8 months) and device support (3 vs 1). On ads and in-app purchases there is nothing between them.

eMathMind 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.

Back in Time for iPhone ships an update every 8 months, eMathMind every 3 weeks. The most recent releases landed on November 6, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Back in Time for iPhone | eMathMind |
| --- | --- | --- |
| 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 3 weeks** |
| Monetization | Paid | — |
| Size | 625 MB | 35 MB |
| Requires iOS | 16.0 | **10.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Landka](https://appshunter.io/developer/450345696) | [Patrick Michael Grimes](https://appshunter.io/developer/1736711608) |

## 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


### eMathMind

[App page](https://appshunter.io/ios/app/emathmind/id1660211786)

**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 eMathMind free?

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

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

Neither Back in Time for iPhone nor eMathMind shows ads.

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

Back in Time for iPhone ships an update every 8 months, and eMathMind every 3 weeks. Most recently, Back in Time for iPhone was updated on November 6, 2026 and eMathMind on October 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.*