Comparison

OCD, Overthinking, Impulses vs ImmuneTracker

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

Head to head
About

OCD, Overthinking, Impulses

Features
Read full description

As someone who has lived with OCD for many years, I know the mental loops that can keep us trapped. Repetitive compulsions driven by the fear of not having done something right. Other manifestations include rumination, "what if" spirals, and impulses that feel impossible to resist. I've learned that the faster we acknowledge an unproductive thought and move on, the better—the less of our precious life we waste. That's the simple idea behind this app. THE CONCEPT Draw a checkmark. That's it. When you're stuck in an obsessive thought, lost in rumination, or fighting an impulse—draw a checkmark on your screen. This small act creates a moment of interruption that engages you on three levels: Something to feel: The physical motion of your finger across the screen makes the act tangible. You're not just thinking about moving on—you're doing something. Something to see: The checkmark appears, a visual confirmation that this moment has been acknowledged and completed. Something to hear: A sound reinforces the sense of closure. This combination of touch, sight, and sound creates a small ritual—a concrete way to say: "I see you, but I choose to move forward." THREE MODES FOR DIFFERENT CHALLENGES OCD Mode — For intrusive thoughts and compulsions. Acknowledge the thought without engaging with it. Choose to check it off. Move on. Overthinking Mode — For when your mind won't stop analyzing. Sometimes you don't need to solve the thought—you just need to let it go. Impulse Control Mode — For impulses that demand immediate action but could potentially cause harm (for example, in relationships). The checkmark creates a pause. That pause might be all you need to see things differently. TRACK YOUR PROGRESS The app counts every checkmark—daily and long-term. On difficult days, you can look back and see: "I've already moved past 50 situations since I started counting. Why not this one too?" Small victories add up. WHAT THIS APP IS NOT This is not a replacement for therapy. If you're struggling with OCD, chronic anxiety, or impulse control issues, please work with a mental health professional. CheckOff is meant to be one small tool in your toolkit—something simple you can reach for in difficult moments. FEATURES Gesture-based checkmark drawing Three specialized modes Daily and lifetime progress tracking 4 sound effects Light and dark mode Links to professional resources (IOCDF, evidence-based guides) Clean, distraction-free interface Works offline PRIVACY Your journey stays yours. All data is stored locally on your device. No accounts, no tracking, no cloud sync, no data collection. FOR YOU IF YOU DEAL WITH Obsessive-Compulsive Disorder (OCD) Intrusive thoughts Chronic rumination and thought loops Analysis paralysis Impulse control challenges Anxiety-related thought patterns

About

ImmuneTracker

Features
Read full description

ImmuneTracker is a mobile application that empowers home-based research studies. The application allows users to answer survey questions and track their immune-mediated disease.

Screenshots

OCD, Overthinking, Impulses4 screens
ImmuneTracker4 screens

Verdict

The call

OCD, Overthinking, Impulses and ImmuneTracker are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

ScorecardNo meaningful differences
OCD, Overthinking, Impulses versus ImmuneTracker: the parameters behind the verdict, then further details
ParameterOCD, Overthinking, ImpulsesImmuneTracker
PriceFreeFree
Update frequencyEvery 15 months—
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad — betteriPhone
Requires iOS16.4 — better16.6
Further details — not scored
Size1 MB118 MB
Age rating17+17+
DeveloperJohannes Matthias Niele HahnUniversity of California at San Francisco

In-app purchases

None

OCD, Overthinking, Impulses

No in-app purchases

None

ImmuneTracker

No in-app purchases

Questions

Is OCD, Overthinking, Impulses free?
OCD, Overthinking, Impulses is free to download, with no in-app purchases.
Is ImmuneTracker free?
ImmuneTracker is free to download, with no in-app purchases.
Do OCD, Overthinking, Impulses or ImmuneTracker have ads?
Neither OCD, Overthinking, Impulses nor ImmuneTracker shows ads.

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