Comparison

PsyPad vs MyMetraKey

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

Head to head
About

PsyPad

Features
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PsyPad is an open source platform for facilitating visual psychophysics experiments on an iPad. Using customisable staircases or MOCS, the researcher can control presentation of any stimuli that can be precomputed as PNG image files, including movies. Features include participant accounts, up to 4 response buttons, comprehensive log files, and remote test configuration using the PsyPad server. A demo mode with access to a public gallery of tests also makes PsyPad useful for teaching. The project is open source, with repositories for the application code and example server code. https://github.com/davidlawson/PsyPad https://github.com/davidlawson/PsyPad-Server

About

MyMetraKey

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The MyMetraKey (MMK) app gives you the freedom to remotely book, use and manage your Metra smart locker via your smartphone. With one click your locker will unlock and the locker doors will spring open (or unlock, in case of using Metra's push-open smart lock). Remote, touchless and secure. Almost magic like. The MMK gives total freedom to both staff and management. Pre-book/allocate a locker to have one waiting for you on arrival, assign cleaning and/or maintenance of your lockers, and also open your locker for other staff members when working remotely (or when on a well-deserved vacation). Use the MMK app in your office, school, hospital and elsewhere as a sole 'key' for your locker or in combination with your access card/badge. The MMK app can be used with personal and shared/group lockers (when you have access to a group locker). The MMK app is suitable for all working and other environments, from traditional to highly dynamic ones (ABW).

Screenshots

MyMetraKey2 screens

Verdict

The call

The clearest difference is update cadence: MyMetraKey at every 2 months against PsyPad's every 4 months. MyMetraKey also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

UpkeepUpdate frequency

PsyPad ships an update every 4 months, MyMetraKey every 2 months. Both last shipped on October 26, 2026.

Scorecard2 real differences ยท 4 level
PsyPad versus MyMetraKey: the parameters behind the verdict, then further details
ParameterPsyPadMyMetraKey
PriceFreeFree
Update frequencyEvery 4 monthsEvery 2 months โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPadiPhone, iPad, iPod โ€” better
Requires iOS13.512.1 โ€” better
Further details โ€” not scored
Size4 MB24 MB
Age rating4+4+
DeveloperAndrew TurpinMetra d.o.o.

In-app purchases

None

PsyPad

No in-app purchases

None

MyMetraKey

No in-app purchases

Questions

Is PsyPad free?
PsyPad is free to download, with no in-app purchases.
Is MyMetraKey free?
MyMetraKey is free to download, with no in-app purchases.
Do PsyPad or MyMetraKey have ads?
Neither PsyPad nor MyMetraKey shows ads.
Which is updated more often, PsyPad or MyMetraKey?
PsyPad ships an update every 4 months, and MyMetraKey every 2 months. Most recently, PsyPad was updated on October 26, 2026 and MyMetraKey on October 26, 2026.

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