Comparison

GBA vs Protocol66

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

Head to head
About

GBA

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Experience a revolutionary approach to cognitive assessment with our Game-based Assessment app. Play engaging games that evaluate your cognitive skills, and we'll provide you with a comprehensive analysis. Compare your results with others and discover your strengths and weaknesses. Unlock insights into your cognitive abilities and improve them while having fun.

About

Protocol66

Features
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66 days. 5 habits. Miss a day, start over. Protocol 66 is the science-backed alternative to extreme fitness challenges. Based on habit formation research โ€” not bro science โ€” it takes exactly 66 days to build lasting habits. THE RULES ARE SIMPLE - Pick 5 daily habits - Complete all 5 every day - Miss a day, restart from zero - Rest days are earned, not given WHY 66 DAYS? Research by Phillippa Lally at University College London found it takes an average of 66 days to form automatic habits. Not 21. Not 30. Not 75. THIS ISN'T FOR EVERYONE No streaks to protect you. No lives. No second chances. If you're looking for an app that goes easy on you, this isn't it. Ready to commit? -------------------------------------------------------------------------------- Privacy Policy: https://www.pocketapps.studio/protocol66/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

GBA3 screens
Protocol664 screens

Verdict

The call

The clearest difference is in-app purchases: GBA at none against Protocol66's 3. GBA also leads on device support (3 vs 1) and iOS requirement (13.0 vs 18.0). On price, update cadence and ads 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. Protocol66 sells 3 in-app purchases, starting at $2.99 per 7 days. GBA asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 20, 2026 and October 6, 2026 respectively.

Scorecard3 real differences ยท 3 level
GBA versus Protocol66: the parameters behind the verdict, then further details
ParameterGBAProtocol66
PriceFreeFree
Update frequencyEvery 2 weeksEvery 2 weeks
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone
Requires iOS13.0 โ€” better18.0
Further details โ€” not scored
Size87 MB35 MB
Age rating9+12+
DeveloperSUPERLEVEL, OOOPOCKET APPS STUDIO PTE. LTD.

In-app purchases

None

GBA

No in-app purchases

3 purchases

Protocol66

Subscriptions2
  • Pro Version3 Days trial$2.997 Days
  • Pro7 Days trial$19.991 Year
One-time1
  • Lifetime Access$3.99

Questions

Is GBA free?
GBA is free to download, with no in-app purchases.
Is Protocol66 free?
Protocol66 is free to download, with in-app purchases available.
Do GBA or Protocol66 have ads?
Neither GBA nor Protocol66 shows ads.
Which is updated more often, GBA or Protocol66?
GBA ships an update every 2 weeks, and Protocol66 every 2 weeks. Most recently, GBA was updated on October 20, 2026 and Protocol66 on October 6, 2026.

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