KF vs SpectrumScan
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KF
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.
- Strength identification
- Daily strength spotting journal
- Reminders to spot strengths
- Monthly strength summaries
- Focus on 24 character strengths
- Boosts mood and well-being
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STRIDE stands for “Strength Identification and Expression,” which means becoming aware of your personal strengths and using them more in your daily life. The KF-STRIDE® app was developed by Kessler Foundation to help individuals learn how to do “strength-spotting,” which is a way of recognizing when you use your strengths every day! The app focuses on 24 character strengths, which are positive traits identified by the field of positive psychology. The app provides a description of these strengths, as well as a place to “spot” them in a daily journal. Research shows that “spotting” strengths has clinical benefit: it can boost your mood and well-being and show you how many times you do something “right,” as opposed to focusing on what you do “wrong.” In addition to the daily journal, the KF-STRIDE® app will provide you with reminders to spot your strengths and a monthly summary of all the strengths you used that month. KF-STRIDE® was created by Kessler Foundation with support from Alfiero and Lucia Palestroni Foundation.
SpectrumScan
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.
- 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
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SpectrumScan is a digital health app that helps individuals with sensory sensitivities (common to autism, ADHD, SPS, etc) navigate public spaces by crowdsourcing real-time sound and light data and providing accessibility insights about their environment.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | KF | SpectrumScan |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (6 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 | 6 — better |
| Update frequency | Every 8 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 12.4 — better | 17.6 |
| Further details — not scored | ||
| Size | 14 MB | 21 MB |
| Age rating | 12+ | 17+ |
| Developer | Kessler Foundation | Daivurjnt |
Customer experience
KF
SpectrumScan
In-app purchases
KF
No in-app purchases
SpectrumScan
- SpectrumScan Monthly Subscription$9.991 Month
