Comparison

Light Signals vs Personality Assessor

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Light Signals

Features
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This app lets you talk to the people around you with Morse code flashed from your device's flashlight. Alongside a set of ready-made example phrases, you can register words of your own. In the settings menu, you can adjust the brightness of the flashlight.

About

Personality Assessor

Features
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Do you work with, live with, or know someone whose behaviour keeps leaving you confused, drained, or manipulated? Personality Assessor gives you a calm, structured, research-based way to make sense of what you are experiencing - and to decide what to do next. START WITH A QUICK CHECK Not sure what you are dealing with? Answer 12 everyday questions about the person, one at a time - "Not sure" is always an option. The Quick Check points you to the patterns worth a closer look, and ticks your "Yes, often" answers for you in the full checklist. SIX RESEARCH-BASED CHECKLISTS โ€ข Narcissistic Personality Disorder (NPD) - 9 DSM-5-TR criteria โ€ข Antisocial Personality Disorder / Sociopathy - 7 DSM-5-TR criteria โ€ข Psychopathy - 20 indicators based on the Hare PCL-R โ€ข Borderline Personality Disorder (BPD) - 9 DSM-5-TR criteria โ€ข Machiavellianism - 9 indicators from Dark Triad research โ€ข Covert (Vulnerable) Narcissism - 9 indicators from clinical research Tick the behaviours you have consistently observed - not isolated incidents. You see how many indicators you noted, what clinical practice would require before a professional could make a diagnosis (for the DSM-based checklists), and plain-language guidance on protecting yourself: stay aware, set boundaries, protect yourself, or limit contact. SEE HOW THINGS CHANGE Every assessment is kept, so you can re-check a pattern over time and see what has changed since last time. INCIDENT JOURNAL (PRO) Write down what happened, when, and how you felt - close to when it happens. Link entries to the behaviours they are an example of, and the journal shows you which patterns keep coming up. Your first 3 entries are free. SUPPORT WHEN YOU NEED IT Where the guidance suggests reaching out, the app lists free, confidential helplines for your region. They are always available in Settings, too - no assessment needed. PRIVATE BY DESIGN No account, no ads, no tracking. Your data is stored on your device and, if you use iCloud, synced through your own private iCloud account. The developer never sees it. FREE AND PRO Every checklist, the Quick Check, your history and the research library are free, for up to 2 people. Pro unlocks the journal without limits and unlimited people - a one-time purchase, with a 14-day free trial. No subscription. Important: Personality Assessor is a lifestyle and professional awareness tool. It is not a medical device and does not provide diagnoses. If you are dealing with a difficult or dangerous situation, please seek professional support.

Screenshots

Light Signals4 screens
Personality Assessor4 screens

Verdict

The call

The clearest difference is ads: Personality Assessor at none against Light Signals's shown. Personality Assessor also leads on iOS requirement (18.6 vs 26.1). Light Signals's advantage is update cadence (every 9 days vs every 3 weeks). On price, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Light Signals sells 1 one-off in-app purchase and Personality Assessor sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Light Signals ships an update every 9 days, Personality Assessor every 3 weeks. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

Scorecard3 real differences ยท 3 level
Light Signals versus Personality Assessor: the parameters behind the verdict, then further details
ParameterLight SignalsPersonality Assessor
PriceFreeFree
Update frequencyEvery 9 days โ€” betterEvery 3 weeks
AdsYesNo โ€” better
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad, Mac โ€” better
Requires iOS26.118.6 โ€” better
Further details โ€” not scored
Size5 MB3 MB
Age rating4+9+
DeveloperMIZOU, CO., LTD.Ralf Koch

In-app purchases

1 purchases

Light Signals

One-time1
  • Remove Ads$1.99
2 purchases

Personality Assessor

One-time2
  • PA Pro - 14-day TrialFree
  • PA Pro - Lifetime$4.99

Questions

Is Light Signals free?
Light Signals is free to download, with in-app purchases available.
Is Personality Assessor free?
Personality Assessor is free to download, with in-app purchases available.
Do Light Signals or Personality Assessor have ads?
Light Signals shows ads; Personality Assessor does not.
Which is updated more often, Light Signals or Personality Assessor?
Light Signals ships an update every 9 days, and Personality Assessor every 3 weeks. Most recently, Light Signals was updated on October 24, 2026 and Personality Assessor on October 19, 2026.

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