# 英単完全攻略8000語 vs Back in Time for iPhone

The clearest difference is rating: 英単完全攻略8000語 at 5.0 against Back in Time for iPhone's 3.8. 英単完全攻略8000語 also leads on update cadence (every 2 months vs every 8 months) and price ($2.99 vs $4.99). Back in Time for iPhone's advantage is ratings volume (15 vs 1). On ads, in-app purchases and monetization model there is nothing between them.

英単完全攻略8000語 costs $2.99 and Back in Time for iPhone $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

英単完全攻略8000語 holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Back in Time for iPhone has 15 ratings behind it against 1, so its average is the more settled of the two.

英単完全攻略8000語 ships an update every 2 months, Back in Time for iPhone every 8 months. The most recent releases landed on October 8, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | 英単完全攻略8000語 | Back in Time for iPhone |
| --- | --- | --- |
| Price | **$2.99** | $4.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/8000/id343272068/reviews)** | [3.8 (15 ratings)](https://appshunter.io/ios/app/back-in-time-for-iphone/id483148811/reviews) |
| Number of ratings | 1 | **15** |
| Positive reviews | — | 71.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 8 months |
| Monetization | Paid | Paid |
| Size | 116 MB | 625 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [CAI MEDIA CO.,LTD.](https://appshunter.io/developer/343272071) | [Landka](https://appshunter.io/developer/450345696) |

## What reviewers say

### 英単完全攻略8000語

[App page](https://appshunter.io/ios/app/8000/id343272068)

Master 8000 essential English words through engaging games. This app covers vocabulary from junior high to university entrance exams and TOEIC, with a focus on efficient learning and native pronunciation.

**Highlights:** 8000 essential English words, 6 difficulty levels, 4 engaging game modes, Native pronunciation audio, Spaced repetition learning, Word list with definitions

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is 英単完全攻略8000語 free?

英単完全攻略8000語 costs $2.99, with no in-app purchases.

### Is Back in Time for iPhone free?

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

### Which has better reviews, 英単完全攻略8000語 or Back in Time for iPhone?

英単完全攻略8000語 is rated higher. 英単完全攻略8000語 averages 5.0 out of 5 from 1 ratings, while Back in Time for iPhone averages 3.8 from 15 ratings.

### Do 英単完全攻略8000語 or Back in Time for iPhone have ads?

Neither 英単完全攻略8000語 nor Back in Time for iPhone shows ads.

### Which is updated more often, 英単完全攻略8000語 or Back in Time for iPhone?

英単完全攻略8000語 ships an update every 2 months, and Back in Time for iPhone every 8 months. Most recently, 英単完全攻略8000語 was updated on October 8, 2026 and Back in Time for iPhone on September 28, 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.*