# BGC Science vs KF

The clearest difference is rating: KF at 5.0 against BGC Science's 1.8. BGC Science's advantage is update cadence (every 2 months vs every 8 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

KF holds the better App Store score, 5.0 against 1.8. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

BGC Science ships an update every 2 months, KF every 8 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | BGC Science | KF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.8 (4 ratings)](https://appshunter.io/ios/app/bgc-science/id1508696910/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/kf-stride/id1618365126/reviews)** |
| Number of ratings | **4** | 2 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 8 months |
| Monetization | Free | Free |
| Size | 182 MB | 14 MB |
| Requires iOS | **12.0** | 12.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Northeastern University Information Services](https://appshunter.io/developer/455790172) | [Kessler Foundation](https://appshunter.io/developer/1618365128) |

## What reviewers say

### BGC Science

[App page](https://appshunter.io/ios/app/bgc-science/id1508696910)

Conduct auditory and cognitive tests from home using this portable psychology laboratory. Developed by Northeastern University's Brain Game Center, it supports mental fitness and well-being.

**Highlights:** Home-based testing, Auditory tests, Cognitive tests, Mental fitness support, Developed by university research center

**Features:** macOS Compatibility

**In-app purchases:** none


### KF

[App page](https://appshunter.io/ios/app/kf-stride/id1618365126)

This app helps you identify and express your personal strengths by focusing on 24 character strengths. It provides a daily journal to "spot" these strengths, offering reminders and monthly summaries to boost mood and well-being.

**Highlights:** Strength identification, Daily strength spotting journal, Reminders to spot strengths, Monthly strength summaries, Focus on 24 character strengths, Boosts mood and well-being

**In-app purchases:** none


## Frequently asked questions

### Is BGC Science free?

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

### Is KF free?

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

### Which has better reviews, BGC Science or KF?

KF is rated higher. BGC Science averages 1.8 out of 5 from 4 ratings, while KF averages 5.0 from 2 ratings.

### Do BGC Science or KF have ads?

Neither BGC Science nor KF shows ads.

### Which is updated more often, BGC Science or KF?

BGC Science ships an update every 2 months, and KF every 8 months. Most recently, BGC Science was updated on November 3, 2026 and KF on November 3, 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.*