Best Gc21 Apps

226+ iOS apps curated and reviewed

4.6 avg rating
20 free apps
Updated May 2026

GC21 is the household name in gc21, but it's far from the only option. We track 226+ alternatives and competitors on iOS β€” many free, many higher-rated than you'd expect.

Compare top Gc21 Apps (May 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1GC21GC21Freeβ€”NoNoMay 2026
2Proton Calendar: Secure EventsProton Calendar: Secure EventsFree4.0β˜… (1.4K)NoNoSep 2026
3DeepSeek - AI AssistantDeepSeek - AI AssistantFree4.0β˜… (11K)NoNoSep 2026
4GetYourGuide: Plan & BookGetYourGuide: Plan & BookFree4.9β˜… (321K)YesNoSep 2026
5viagogo Ticketsviagogo TicketsFree4.4β˜… (2.8K)YesNoSep 2026
6AG EventsAG EventsFree5.0β˜… (1)NoNoJul 2026
7Bible Engagement ProjectBible Engagement ProjectFree4.2β˜… (61)NoNoSep 2026
8SHEIN - Shopping OnlineSHEIN - Shopping OnlineFree4.7β˜… (3.6M)NoNoSep 2026

Top Picks for Gc21

Proton Calendar: Secure Events#2

Proton Calendar: Secure Events by Proton AG

Keep your schedule private
Strong Contender
πŸ“Š Productivity
4.0😐(1.4K ratings)
FreeIn-App Purchases
Proton Calendar: Secure Events screenshot 1
Proton Calendar: Secure Events screenshot 2
Proton Calendar: Secure Events screenshot 3
Proton Calendar: Secure Events screenshot 4
Proton Calendar: Secure Events screenshot 5
Proton Calendar: Secure Events screenshot 6

This app helps you manage your schedule with privacy in mind. It offers various viewing options, reminders, and recurring event creation. All your data is protected by end-to-end encryption and strict Swiss privacy laws, ensuring your personal information is not tracked or harvested.

What We Love

  • πŸš€ Intuitive interface
  • πŸ”’ Secure and private
  • πŸ‘ Good integration with Proton suite
  • πŸ‘ Visually appealing design

Room to Improve

  • πŸ› Slow performance and crashes
  • πŸ” Lacking search functionality
  • πŸ“… Missing advanced calendar views (week, month)
  • πŸ”— Limited integration with other calendars
DeepSeek - AI Assistant screenshot 1
DeepSeek - AI Assistant screenshot 2
DeepSeek - AI Assistant screenshot 3
DeepSeek - AI Assistant screenshot 4
DeepSeek - AI Assistant screenshot 5

This AI assistant offers free, intelligent help powered by a cutting-edge model. It provides rapid responses and advanced capabilities to enhance problem-solving and daily efficiency.

What We Love

  • πŸš€ Fast and responsive
  • πŸ‘ User-friendly interface
  • πŸ’‘ Powerful AI capabilities
  • πŸ€– Impressive reasoning and thought process
  • πŸ’° Free and open-source

Room to Improve

  • πŸ€– Censorship and bias in responses
  • πŸ”Œ Server overload and slow response times
  • πŸ”’ Privacy concerns regarding data collection
  • πŸ› Occasional bugs and crashes

More Gc21 apps to explore

FAQ about Gc21

Are there free gc21 apps for iPhone?
Yes β€” 20 of the top gc21 apps we rank are free to download, including GC21 and Proton Calendar: Secure Events.
GC21 has no ads and has no in-app purchases, according to its App Store listing as of May 2026.
We track 226+ gc21 apps on the iOS App Store as of May 2026, ranked by rating, recency, and analysis of real user reviews.