Comparison

MindSampler vs NotMyPii

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

Head to head
About

MindSampler

Participate in scientific research by answering short questions and experiments throughout your day. Contribute to understanding human thought, feelings, and behavior.

Highlights
  • Contribute to scientific understanding
  • Receive daily experiment notifications
  • Answer short questions
  • Enter study codes
  • Track daily life insights
Features
Read full description

Help scientists understand how people think, feel, and behave as they go about their daily lives. Enter your study code and start receiving notifications throughout the day with short experiments or questions to answer.

About

NotMyPii

Features
Read full description

NotMyPii verifies your age using your ECG waveform from Apple Watch — not a government ID, not a face scan, not a username. Open the link from a partner site on your iPhone, place your finger on the Apple Watch Digital Crown for 30 seconds, and receive a signed verification result. Your ECG is processed in memory and never stored. No account is created. No personal information is collected. Requires iPhone and Apple Watch Series 4 or later.

Screenshots

MindSampler4 screens
NotMyPii1 screens

Verdict

The call

The clearest difference is update cadence: NotMyPii at daily against MindSampler's every 2 months. On price, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

MindSampler ships an update every 2 months, NotMyPii daily. The most recent releases landed on June 5, 2026 and September 14, 2026 respectively.

Scorecard1 real difference · 8 level
MindSampler versus NotMyPii: the parameters behind the verdict, then further details
ParameterMindSamplerNotMyPii
PriceFreeFree
Rating2.0 (4 ratings) — better—
Number of ratings4 — better—
Update frequencyEvery 2 monthsDaily — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size52 MB0 MB
Age rating4+4+
DeveloperMindSampler Inc.Kyle Huscher

In-app purchases

None

MindSampler

No in-app purchases

None

NotMyPii

No in-app purchases

Questions

Is MindSampler free?
MindSampler is free to download, with no in-app purchases.
Is NotMyPii free?
NotMyPii is free to download, with no in-app purchases.
Do MindSampler or NotMyPii have ads?
Neither MindSampler nor NotMyPii shows ads.
Which is updated more often, MindSampler or NotMyPii?
MindSampler ships an update every 2 months, and NotMyPii daily. Most recently, MindSampler was updated on June 5, 2026 and NotMyPii on September 14, 2026.

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