Comparison

Visible vs PDA Question

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

Head to head
About

Visible

Manage energy-limiting health conditions like Long Covid and ME/CFS through personalized pacing insights. Track biometrics, log symptoms, and understand patterns to reduce crashes and improve daily well-being. Share health reports with your doctor and contribute to research.

Highlights
  • Measure heart rate variability (HRV) and resting heart rate
  • Log symptoms, medication, and daily exertion
  • Track patterns and understand biometric influences
  • Download long-term health reports
  • Opt-in to participate in research studies
  • Real-time pacing notifications with optional band
Features
Read full description

Do you live with an energy-limiting health condition? Join over 250,000+ people with Long Covid, ME/CFS, POTS, Fibromyalgia, chronic fatigue and more who are improving their pacing with Visible. Get more from the energy you have. Pacing (balancing activity and rest) is one of the best ways to live well with your condition and reduce the risk of crashes or PEM. But pacing can be hard. Visible gives you personalized insights to help you understand your body, manage your energy and pace with more confidence. Unlike fitness tracking apps, Visible is designed to support rest and pacing, not workouts and exercise. MEASURE YOUR PACE Use your phone’s camera to measure your biometrics, including heart rate variability (HRV) and resting Heart Rate each morning. Understand your daily stability and make informed choices about how to pace your day. TRACK AND SPOT PATTERNS Log your symptoms, medication, and daily exertion to spot patterns over time. See how your lifestyle choices may be influencing how you feel and your biometrics. HEALTH REPORT AND EXPORT Download long-term health reports to get an overview of your trends and share them with your doctor. TAKE PART IN RESEARCH Opt-in to studies with world-leading researchers. Volunteer your data and help advance the science of energy-limiting conditions. GET ALL DAY DATA Pair the Visible band for real-time pacing notifications, PacePoints, all-day energy budgeting, and more. Only available in US and UK. THOUSANDS OF 5-STAR REVIEWS “Visible has been LIFE-CHANGING. I had fibromyalgia before COVID and thought I did well at pacing, but this has helped me on a whole new level.” – Roma “This is the first app in the 33 years since I have been diagnosed with this condition that shows me the data my doctor and I need. Fitness apps don't work well because they are not geared for people with POTS and PEM. This is the very first app that warns me when I have to SLOW DOWN and the monthly reports help my doctors get a better picture of how I'm doing.” – Lesli “Visible has been life changing making an invisible illness visible. It has been credibly validating to have concrete evidence to show to others about what is going on behind the scenes." – Eleanor Visible is not intended to provide medical services such as diagnosis, cure, mitigation, prevention, or treatment of any disease or medical condition. The app is not a substitute for the advice of a medical professional based on your personal circumstances. Always consult a doctor before making any medical decisions. For technical support, reach out to: [info@makevisible.com](mailto:info@makevisible.com) Privacy policy available at: https://www.makevisible.com/privacy

About

PDA Question

This app provides immediate support and understanding for individuals experiencing meltdowns or shutdowns due to conditions like PDA, anxiety, or OCD. It offers personalized scripts, offline guides, and professional communication tools.

Highlights
  • Personalized scripts for de-escalation
  • Offline topic guides
  • PDA dictionary for professionals
  • AI-powered guidance
  • Professional letter templates
  • Sibling and partner support features
Features
Read full description

When everyday demands trigger meltdowns, shutdowns, panic, or explosive reactions, PDA Question helps you understand what may be happening beneath the behavior and find words you can use right now. You are not alone, and it is not your fault. Approaches that work for many children can increase pressure for someone with a PDA profile or an overwhelmed nervous system. PDA Question was created by a parent who has lived these moments and needed practical, low-demand support in real time. Describe what is happening and receive two focused responses: • Understanding: a compassionate explanation of what may be driving the response, plus practical ideas for the moment • Script: calm, natural words to say out loud or use as self-talk PDA-INFORMED AI GUIDANCE PDA Question uses an AI model fine-tuned for PDA-informed support. Its guidance was developed by comparing recurring ideas across multiple independent educational, professional, research, and lived-experience sources, then translating those shared principles into original, practical responses. It is designed to stay nervous-system-aware, autonomy-respecting, and low-demand rather than defaulting to compliance-first advice. The app is centered on PDA and may also be useful when demand sensitivity overlaps with anxiety, OCD-related rigidity, PANS/PANDAS-related overwhelm, school refusal, or burnout. It does not diagnose any condition. BUILT FOR REAL LIFE • Personalize by age 1-25, role (Parent, Teacher, Therapist, or Self), and response length • Emergency Scripts with situation-specific de-escalation phrases and optional slow read-aloud support • PDA Topics with 33 quick offline guides • PDA Dictionary with searchable terms for IEP meetings, family conversations, and providers • Professional Letters for schools and clinicians, with editing and autosave • Sibling Support with 24+ scenarios, including what to say, what not to say, and why • Partner Sync for sharing scripts and strategies with co-parents and caregivers • History, Schedule Builder, Popular Questions, Success Stories, Activity Library, and Helpful Products INCLUDED FREE, NO SUBSCRIPTION REQUIRED Emergency Scripts, Crisis Support, PDA Dictionary, PDA Topics, Success Stories, Activity Library, and Helpful Products. PREMIUM SUBSCRIPTION AI-powered personalized guidance, Professional Letters, Partner Sync, Sibling Support, History, Schedule Builder, and Popular Questions. PRIVACY We do not sell personal data. IMPORTANT Educational support only. Review AI-generated guidance before using it for important decisions. PDA Question does not diagnose or replace medical, mental health, legal, or emergency services. If someone is in immediate danger, contact local emergency services.

Screenshots

Visible4 screens
PDA Question4 screens

Verdict

The call

The clearest difference is in-app purchases: Visible at none against PDA Question's 5. Visible also leads on ratings volume (3.7K vs 7) and iOS requirement (15.1 vs 17.0). PDA Question's advantage is rating (5.0 vs 4.8) and review sentiment (100% vs 89%). On price, update cadence, ads and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. PDA Question sells 5 in-app purchases, starting at $0.99 per month. Visible asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

PDA Question holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Visible has 3.7K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 89% of Visible's written reviews are positive against 100% of PDA Question's.

UpkeepUpdate frequency

Visible ships an update fortnightly, PDA Question every 2 weeks. The most recent releases landed on October 29, 2026 and October 10, 2026 respectively.

Scorecard5 real differences · 5 level
Visible versus PDA Question: the parameters behind the verdict, then further details
ParameterVisiblePDA Question
PriceFreeFree
Rating4.8 (3.7K ratings)5.0 (7 ratings) — better
Positive reviews88.9% of reviews100.0% of reviews — better
Number of ratings3.7K — better7
Update frequencyFortnightly — betterEvery 2 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 — better17.0
Further details — not scored
Size192 MB16 MB
Age rating12+12+
DeveloperVisible Health Inc. (US)Geoffrey Capell

Customer experience

Visible

All ratings3,657 ratings
Positive95.2%
Neutral2.1%
Negative2.7%
Written reviews1,150 reviews
Positive88.9%
Neutral4.0%
Negative7.1%

PDA Question

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Visible

Reported bugs

3 issues
  • App crashes or freezes on certain devices
  • Heart rate measurement issues with multi-camera phones
  • Inconsistent sync and data tracking

Requested features

5 requests
  • Dark mode option
  • Ability to track sleep quality and patterns
  • Integration with Apple Health or other health platforms
  • More customization options for symptoms and activities
  • Improved data export and sharing capabilities

PDA Question

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Visible

No in-app purchases

5 purchases

PDA Question

Subscriptions2
  • PDA Question Premium7 Days trial$0.991 Month
  • PDA Question Premium7 Days trial$9.991 Year
One-time3
  • Small Thank You$2.99
  • Generous Support Donation$4.99
  • Amazing Contribution$9.99

Questions

Is Visible free?
Visible is free to download, with no in-app purchases.
Is PDA Question free?
PDA Question is free to download, with in-app purchases available.
Which has better reviews, Visible or PDA Question?
PDA Question is rated higher. Visible averages 4.8 out of 5 from 3.7K ratings, while PDA Question averages 5.0 from 7 ratings.
Do Visible or PDA Question have ads?
Neither Visible nor PDA Question shows ads.
Which is updated more often, Visible or PDA Question?
Visible ships an update fortnightly, and PDA Question every 2 weeks. Most recently, Visible was updated on October 29, 2026 and PDA Question on October 10, 2026.

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