Comparison

PASSCODES vs Speed Numbers

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

Head to head
About

PASSCODES

Features
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Aim for the world's number one instantaneous memory! Infinite Passcode is a super-simple game in which you simply memorize the passcode displayed on the screen and type it in. This game is perfect for activating the brain, improving memory, strengthening concentration. You can also see your memory rank in the world ranking. Please try it while you are on the move, in the middle of a boring meeting, or while waiting at the hospital!

About

Speed Numbers

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Speed Numbers: PAO System is a focused memory training app for people who use the PAO method to memorize numbers. Build and manage your 00โ€“99 PAO list, review your entries, test recall, practice number sequences, and train with a 300-digit Speed Numbers mode. You can also create Quick Cards for your own personal study material. Key features: โ€ข 00โ€“99 PAO item management โ€ข PAO review and recall testing โ€ข Sequence Training โ€ข Speed Numbers 300-digit training โ€ข Time Attack โ€ข Quick Cards for personal review โ€ข Text-based export and import โ€ข Local-first storage No account is required. No login is required. Your training data is primarily stored on your device.

Screenshots

PASSCODES4 screens
Speed Numbers4 screens

Verdict

The call

The clearest difference is ads: Speed Numbers at none against PASSCODES's shown. Speed Numbers also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, in-app purchases and device support 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

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

Scorecard2 real differences ยท 4 level
PASSCODES versus Speed Numbers: the parameters behind the verdict, then further details
ParameterPASSCODESSpeed Numbers
PriceFreeFree
Update frequencyEvery 2 monthsEvery 2 months
AdsYesNo โ€” better
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS17.015.0 โ€” better
Further details โ€” not scored
Size16 MB30 MB
Age rating4+4+
DeveloperKENICHI YAMAMOTOEddie Moon

In-app purchases

None

PASSCODES

No in-app purchases

None

Speed Numbers

No in-app purchases

Questions

Is PASSCODES free?
PASSCODES is free to download, with no in-app purchases.
Is Speed Numbers free?
Speed Numbers is free to download, with no in-app purchases.
Do PASSCODES or Speed Numbers have ads?
PASSCODES shows ads; Speed Numbers does not.
Which is updated more often, PASSCODES or Speed Numbers?
PASSCODES ships an update every 2 months, and Speed Numbers every 2 months. Most recently, PASSCODES was updated on November 9, 2026 and Speed Numbers on October 31, 2026.

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