# Recollect the Study vs KF

The clearest difference is rating: KF at 5.0 against Recollect the Study's 4.1. Recollect the Study's advantage is update cadence (monthly vs every 8 months) and ratings volume (15 vs 2). On price, ads, in-app purchases and monetization model 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 4.1. That said, the two scores are not equally well evidenced: Recollect the Study has 15 ratings behind it against 2, so its average is the more settled of the two.

Recollect the Study ships an update monthly, KF every 8 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Recollect the Study | KF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (15 ratings)](https://appshunter.io/ios/app/recollect-the-study/id1217528682/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/kf-stride/id1618365126/reviews)** |
| Number of ratings | **15** | 2 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 8 months |
| Monetization | Free | Free |
| Size | 699 MB | 14 MB |
| Requires iOS | **11.0** | 12.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [University of California Riverside](https://appshunter.io/developer/888130363) | [Kessler Foundation](https://appshunter.io/developer/1618365128) |

## What reviewers say

### Recollect the Study

[App page](https://appshunter.io/ios/app/recollect-the-study/id1217528682)

Engage in a side-scrolling platformer designed to enhance working memory and cognitive skills. Explore diverse worlds, collect resources in specific sequences, and overcome obstacles using memory-based gameplay. This scientifically backed game aims to improve attention and brain plasticity.

**Highlights:** Working memory training, Cognitive challenges, Side-scrolling platformer gameplay, Resource collection with sequences, Brain plasticity improvement, Reward-based framework

**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 Recollect the Study free?

Recollect the Study 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, Recollect the Study or KF?

KF is rated higher. Recollect the Study averages 4.1 out of 5 from 15 ratings, while KF averages 5.0 from 2 ratings.

### Do Recollect the Study or KF have ads?

Neither Recollect the Study nor KF shows ads.

### Which is updated more often, Recollect the Study or KF?

Recollect the Study ships an update monthly, and KF every 8 months. Most recently, Recollect the Study was updated on October 24, 2026 and KF on October 24, 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.*