Comparison

Zella vs Keycal

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

Head to head
About

Zella

Effortlessly manage and update your contact information. Create and share dynamic contact cards that automatically sync across devices, ensuring everyone has your latest details. Receive smart notifications when contacts update their information.

Highlights
  • Dynamic contact cards
  • Automatic syncing
  • Smart notifications
  • Cross-platform compatibility
  • One-tap updates
  • Private and secure sharing
Features
Read full description

Manager your contact information, not everyone else's! Create a contact card, share a contact card and Zella does the rest, automatically keeping contact information current between you and the people you care about! How it works: Create Contact Cards: - Own your contact information. Choose what you share, and who you share with. - Create multiple cards with contact information for home, work, team or club. Share Contact Cards: - Share a card in person using the QR code. - Send contact cards any way you like: Outlook, Gmail, WhatsApp, Telegram, Messenger, Snapchat, Instagram, etc. Zella does the rest: - Zella automatically syncs contact cards across devices. - When you modify your card, Zella automatically updates your contact card on everyone else's device. Key Features: - Dynamic Contact Cards: Update once, share everywhere. Your changes sync automatically with those who matter. - Smart Notifications: Get alerts when contacts update their information. No more manual chasing or awkward "What's your new number?". - Private & Secure: You control what you share and with whom. - Cross-Platform Sync: Works with your phone, email, and favorite apps. - One-Tap Updates: Refresh your entire contact list in seconds. With Zella, instantly share your current contact details with friends, family, and colleagues. People move, change jobs, change emails and get new phone numbers. Zella keeps you in the loop with real-time updates so your address book is never outdated. Zella makes it easy to share your contact information when it changes, and ensures everyone is up to date. Always have current contact information for the people you care about most.

About

Keycal

This keyboard extension provides a full calculator and unit converter directly within your typing interface. Seamlessly perform calculations and conversions without leaving your current application, enhancing productivity for everyday tasks.

Highlights
  • Integrated keyboard calculator
  • Instant unit conversions
  • Works across all apps
  • Customizable themes
  • Haptic feedback and sound
  • Privacy-focused design
Features
Read full description

Keycal - Calculator & Unit Converter Keyboard Keycal is the ultimate keyboard upgrade — a powerful calculator and smart unit converter, built right into your keyboard. Calculate and convert without switching apps. Whether you’re texting, taking notes, or browsing, KeyCal is always one tap away. Features: • Full calculator built into your keyboard • Instant unit conversions (length, weight, temperature, and more) • Works in any app — Messages, Notes, Safari, and more • Customizable themes to match your style • Haptic feedback and sound for a satisfying feel • Fast, simple, and privacy-first Stop switching apps. Just tap, calculate, convert — and keep typing. “By using this app, you agree to the Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/”

Screenshots

Zella4 screens
Keycal4 screens

Verdict

The call

The clearest difference is review sentiment: Keycal at 100% against Zella's 0%. Keycal also leads on update cadence (daily vs every 2 weeks). Zella's advantage is in-app purchases (none vs 1). On price, ads, device support and iOS requirement 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. Keycal sells 1 one-off in-app purchase. Zella asks for nothing beyond the download.

UpkeepUpdate frequency

Zella ships an update every 2 weeks, Keycal daily. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 6 level
Zella versus Keycal: the parameters behind the verdict, then further details
ParameterZellaKeycal
PriceFreeFree
Rating1.0 (2 ratings) — better—
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings2 — better—
Update frequencyEvery 2 weeksDaily — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad — betteriPhone
Requires iOS16.2 — better17.0
Further details — not scored
Size7 MB8 MB
Age rating12+4+
DeveloperZella Systems IncParth Antala

Customer experience

Zella

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Keycal

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Zella

No in-app purchases

1 purchases

Keycal

One-time1
  • Keycal+$4.99

Questions

Is Zella free?
Zella is free to download, with no in-app purchases.
Is Keycal free?
Keycal is free to download, with in-app purchases available.
Do Zella or Keycal have ads?
Neither Zella nor Keycal shows ads.
Which is updated more often, Zella or Keycal?
Zella ships an update every 2 weeks, and Keycal daily. Most recently, Zella was updated on November 3, 2026 and Keycal on October 30, 2026.

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