Comparison

StimuliApp vs QT Random Number Generator

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

Head to head
About

StimuliApp

Create precise psychophysical tests on iOS devices without programming. Assess perceptual capabilities using various stimuli like images, sounds, and videos with synchronized visual and auditory output. Features include real-time preview and automatic report generation.

Highlights
  • Precise timing with Metal framework
  • 60 or 120 Hz test options
  • Synchronized visual and auditory stimulation
  • Interactive stimulus creation with preview
  • Automatic report generation
  • Gamma-correction features
Read full description

StimuliApp is an app designed to create psychophysical tests with precise timing on iOS devices (iPad and iPhone). Psychophysical tests are tests to assess perceptual capabilities. With a simple system of menus, different types of tests including the most common stimuli (gabors, random dots, images, sounds and videos among others) can be created. Programming skills are not necessary. Features: - Precise timing (frames are not dropped) thanks to the use of the native framework Metal, which provides a direct access to the GPU of the iOS device. - Option to run tests at 60 or 120 Hz depending on the model of the device. - Visual and auditory stimulation are synchronized. - Interactive creation of stimuli using real-time preview. - Possibility of using different spatial and time units. - Gamma-correction features. - Automatic report generation.

About

QT Random Number Generator

Generate random numbers quickly and easily for various purposes. This app offers a clean interface and accurate results without requiring an account or internet connection. It's perfect for games, decision-making, or any situation needing a random outcome.

Highlights
  • Generate random numbers
  • Set maximum value
  • Clean, modern interface
  • Quick and accurate results
  • No account required
  • Works offline
Read full description

QT Random Number Generator is a fast, simple, and easy-to-use app for generating random numbers anytime you need them. Choose your maximum value and instantly generate a truly random number. Whether you’re picking a winner, making a decision, running a game, or just need a quick random result, this app gets the job done with no distractions. - Clean, modern interface - Quick and accurate random results - No account or setup required - Works offline - Lightweight and easy to use Perfect for games, giveaways, contests, classrooms, decision-making, and everyday use.

Screenshots

StimuliApp4 screens
QT Random Number Generator2 screens

Verdict

The call

The clearest difference is ads: StimuliApp at none against QT Random Number Generator's shown. StimuliApp also leads on update cadence (every 6 weeks vs every 11 months) and monetization model (free vs ad-supported). QT Random Number Generator's advantage is ratings volume (4 vs 1). On price, rating, 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for StimuliApp against 5.0 for QT Random Number Generator. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

UpkeepUpdate frequency

StimuliApp ships an update every 6 weeks, QT Random Number Generator every 11 months. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

Scorecard5 real differences · 5 level
StimuliApp versus QT Random Number Generator: the parameters behind the verdict, then further details
ParameterStimuliAppQT Random Number Generator
PriceFreeFree
Rating5.0 (1 ratings)5.0 (4 ratings)
Positive reviews—100.0% of reviews
Number of ratings14 — better
Update frequencyEvery 6 weeks — betterEvery 11 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.6
Further details — not scored
Size10 MB12 MB
Age rating4+4+
DeveloperRafael Marin CamposWeb Services Utah LLC

Customer experience

StimuliApp

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

QT Random Number Generator

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

StimuliApp

No in-app purchases

None

QT Random Number Generator

No in-app purchases

Questions

Is StimuliApp free?
StimuliApp is free to download, with no in-app purchases.
Is QT Random Number Generator free?
QT Random Number Generator is free to download, with no in-app purchases.
Which has better reviews, StimuliApp or QT Random Number Generator?
StimuliApp and QT Random Number Generator are both rated 5.0 out of 5 on the App Store, from 1 and 4 ratings respectively.
Do StimuliApp or QT Random Number Generator have ads?
QT Random Number Generator shows ads; StimuliApp does not.
Which is updated more often, StimuliApp or QT Random Number Generator?
StimuliApp ships an update every 6 weeks, and QT Random Number Generator every 11 months. Most recently, StimuliApp was updated on October 11, 2026 and QT Random Number Generator on October 7, 2026.

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