# KF vs SpectrumScan

The clearest difference is in-app purchases: KF at none against SpectrumScan's 1. KF also leads on iOS requirement (12.4 vs 17.6). SpectrumScan's advantage is update cadence (every 2 weeks vs every 8 months) and ratings volume (6 vs 2). On price, rating, ads and device support there is nothing between them.

Both are free to download. SpectrumScan sells 1 in-app purchase, starting at $9.99 per month. KF asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for KF against 5.0 for SpectrumScan. Both are backed by a comparable volume of ratings — 2 and 6 respectively.

KF ships an update every 8 months, SpectrumScan every 2 weeks. The most recent releases landed on October 10, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | KF | SpectrumScan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/kf-stride/id1618365126/reviews) | [5.0 (6 ratings)](https://appshunter.io/ios/app/spectrumscan/id6746865649/reviews) |
| Number of ratings | 2 | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 14 MB | 21 MB |
| Requires iOS | **12.4** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 17+ |
| Developer | [Kessler Foundation](https://appshunter.io/developer/1618365128) | [Daivurjnt](https://appshunter.io/developer/1818833157) |

## What reviewers say

### 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


### SpectrumScan

[App page](https://appshunter.io/ios/app/spectrumscan/id6746865649)

This app helps individuals with sensory sensitivities navigate public spaces. It crowdsources real-time sound and light data to provide accessibility insights about environments, aiding those with conditions like autism or ADHD.

**Highlights:** Real-time sound and light data crowdsourcing, Accessibility insights for public spaces, Supports individuals with sensory sensitivities, Aids navigation for autism, ADHD, SPS, Digital health tool for environmental awareness

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SpectrumScan Monthly Subscription | $9.99 | per month |


## Frequently asked questions

### Is KF free?

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

### Is SpectrumScan free?

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

### Which has better reviews, KF or SpectrumScan?

KF and SpectrumScan are both rated 5.0 out of 5 on the App Store, from 2 and 6 ratings respectively.

### Do KF or SpectrumScan have ads?

Neither KF nor SpectrumScan shows ads.

### Which is updated more often, KF or SpectrumScan?

KF ships an update every 8 months, and SpectrumScan every 2 weeks. Most recently, KF was updated on October 10, 2026 and SpectrumScan on October 12, 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.*