# Infinite English vs Seismic tracker

The clearest difference is in-app purchases: Seismic tracker at none against Infinite English's 1. Seismic tracker also leads on ads (none vs shown) and update cadence (every 3 days vs every 5 weeks). Infinite English's advantage is iOS requirement (15.0 vs 26.0). On price and device support there is nothing between them.

Both are free to download. Infinite English sells 1 one-off in-app purchase. Seismic tracker asks for nothing beyond the download.

Infinite English ships an update every 5 weeks, Seismic tracker every 3 days. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Infinite English | Seismic tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (19 ratings)](https://appshunter.io/ios/app/infinite-english/id1448949101/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 52 MB | 85 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Jernung](https://appshunter.io/developer/1268225656) | [Raphael Lesourd](https://appshunter.io/developer/981244692) |

## What reviewers say

### Infinite English

[App page](https://appshunter.io/ios/app/infinite-english/id1448949101)

Master beginner English vocabulary through a fun, space-themed flashcard game. Utilize multi-sensory learning with text, audio, and visual icons for effortless memorization. Study offline with customizable review challenges and track your progress in an engaging, gamified environment.

**Highlights:** Space-themed vocabulary flashcard game, Multi-sensory learning (text, audio, visual), Offline study capability, Customizable review quizzes, Gamified progress tracking, Hundreds of curated English words

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Unlock | $6.99 | one-time |


### Seismic tracker

[App page](https://appshunter.io/ios/app/seismic-tracker/id6740165946)

**Features:** Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is Infinite English free?

Infinite English is free to download, with in-app purchases available.

### Is Seismic tracker free?

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

### Do Infinite English or Seismic tracker have ads?

Infinite English shows ads; Seismic tracker does not.

### Which is updated more often, Infinite English or Seismic tracker?

Infinite English ships an update every 5 weeks, and Seismic tracker every 3 days. Most recently, Infinite English was updated on November 2, 2026 and Seismic tracker on October 30, 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.*