Comparison

Psychological test vs PPF

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

Head to head
About

Psychological test

Features
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This is a behaviour self-assessment tool originally based on the emotional and behavioural theory of psychologist William Moulton Marston, which centred on four personality traits: D, I,S, and C. This theory was then developed into a behavioural assessment tool.

About

PPF

Features
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The OtoVIS Pterygopalatine Fossa (PPF) module offers an immersive and interactive simulation to explore the complex anatomy of the pterygopalatine fossa. This app is designed for medical professionals and students, providing a comprehensive understanding of the neurovascular structures housed in this challenging area of the skull base. Key Features: - Detailed 3D model of the left pterygopalatine fossa - Contextual placement within the endonasal approach - Interactive tools to explore anatomical relationships - Enhanced surgical relevance to expanded endonasal approaches, including the transpterygoid approach and endonasal lateral cavernous sinus approach - Educational content on the potential routes of spread for neoplastic and infectious processes This app is an invaluable tool for anyone looking to deepen their understanding of skull base anatomy, whether for educational purposes or clinical practice. This work is supported by the Karren Family Foundation through the Ohlson Research Initiative at the University of Calgary’s Cumming School of Medicine.

Screenshots

Psychological test4 screens
PPF4 screens

Verdict

The call

The clearest difference is in-app purchases: PPF at none against Psychological test's 2. PPF also leads on update cadence (fortnightly vs every 6 weeks). Psychological test's advantage is iOS requirement (11.0 vs 15.0). On price, ads and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Psychological test sells 2 one-off in-app purchases. PPF asks for nothing beyond the download.

UpkeepUpdate frequency

Psychological test ships an update every 6 weeks, PPF fortnightly. The most recent releases landed on May 19, 2026 and September 23, 2026 respectively.

Scorecard3 real differences Β· 3 level
Psychological test versus PPF: the parameters behind the verdict, then further details
ParameterPsychological testPPF
PriceFreeFree
Update frequencyEvery 6 weeksFortnightly β€” better
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhone, iPad, iPod β€” betteriPhone, iPod
Requires iOS11.0 β€” better15.0
Further details β€” not scored
Size9 MB784 MB
Age rating4+17+
DeveloperShanghai Aiwa Information Technology Co.,Ltd.Arthur Volpato Batista

In-app purchases

2 purchases

Psychological test

One-time2
  • DiSC test$3.99
  • Discpay$3.99
None

PPF

No in-app purchases

Questions

Is Psychological test free?
Psychological test is free to download, with in-app purchases available.
Is PPF free?
PPF is free to download, with no in-app purchases.
Do Psychological test or PPF have ads?
Neither Psychological test nor PPF shows ads.
Which is updated more often, Psychological test or PPF?
Psychological test ships an update every 6 weeks, and PPF fortnightly. Most recently, Psychological test was updated on May 19, 2026 and PPF on September 23, 2026.

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