# Exploring The Core K vs TeachFX

The clearest difference is rating: TeachFX at 5.0 against Exploring The Core K's 4.4. TeachFX also leads on in-app purchases (none vs 1) and update cadence (weekly vs every 5 weeks). Exploring The Core K's advantage is iOS requirement (8.0 vs 16.4). On price, ads and device support there is nothing between them.

Both are free to download. Exploring The Core K sells 1 one-off in-app purchase. TeachFX asks for nothing beyond the download.

TeachFX holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 7 and 21 respectively. Written reviews point the same way: 60% of Exploring The Core K's written reviews are positive against 75% of TeachFX's.

Exploring The Core K ships an update every 5 weeks, TeachFX weekly. The most recent releases landed on September 26, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Exploring The Core K | TeachFX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (7 ratings)](https://appshunter.io/ios/app/exploring-the-core-k-8-math/id1093007771/reviews) | **[5.0 (21 ratings)](https://appshunter.io/ios/app/teachfx/id1329178826/reviews)** |
| Number of ratings | 7 | **21** |
| Positive reviews | 60.0% of reviews | **75.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 35 MB | 65 MB |
| Requires iOS | **8.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Exploring The Core LLC](https://appshunter.io/developer/1093007710) | [TeachFX](https://appshunter.io/developer/1294178492) |

## What reviewers say

### Exploring The Core K

[App page](https://appshunter.io/ios/app/exploring-the-core-k-8-math/id1093007771)

This app visualizes Common Core State Standards for K-8 math, showing skill progression across grade levels. It serves as a reference for parents and educators to understand expected math skill sets.

**Highlights:** Visualizes K-8 math standards, Shows skill development across grades, Searchable standards, Glossary of education terms, Reference tool for parents and teachers

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Grades and Skills | $2.99 | one-time |


### TeachFX

[App page](https://appshunter.io/ios/app/teachfx/id1329178826)

This tool helps educators gain insights into classroom learning dynamics by capturing and analyzing student-teacher conversations. It provides visible evidence of student engagement and instructional practices, fostering reflection and professional growth. The app is designed for privacy and personalization.

**Highlights:** Classroom talk ratio analysis, Academic language tracking, Questioning technique evaluation, Think time and turn-taking observation, Student participation patterns, Personalized and private data

**In-app purchases:** none


## Frequently asked questions

### Is Exploring The Core K free?

Exploring The Core K is free to download, with in-app purchases available.

### Is TeachFX free?

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

### Which has better reviews, Exploring The Core K or TeachFX?

TeachFX is rated higher. Exploring The Core K averages 4.4 out of 5 from 7 ratings, while TeachFX averages 5.0 from 21 ratings.

### Do Exploring The Core K or TeachFX have ads?

Neither Exploring The Core K nor TeachFX shows ads.

### Which is updated more often, Exploring The Core K or TeachFX?

Exploring The Core K ships an update every 5 weeks, and TeachFX weekly. Most recently, Exploring The Core K was updated on September 26, 2026 and TeachFX on October 8, 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.*