lum9a vs ContactZapp

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

lum9a compared with ContactZapp
Detail	lum9a	ContactZapp
What it does	The cutest to-do list, free forever	Sync your contacts between Google, Microsoft, Apple and CardDAV. Find and merge duplicates easily.
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Freemium
Pricing	Free plan: unlimited tasks and calendar sync, XP, levels, Glow and world building, streaks, daily gifts, focus sessions and reminders, sync across all devices. Plus Monthly: $1.99 per month, everything in Free plus no ads, Aurora and Halo outfits with new monthly outfit, more study sounds, 2 extra s	Free plan: 2 synced accounts, 100 contacts, no time limit. Easy plan: $4.00/month (billed $47.94/year, was $95.88). Unlimited plan: $8.00/month (billed $95.94/year, was $191.88). 50% off Easy and Unlimited with code HALLOWEEN.
Key features	Canvas and Google Calendar sync XP and leveling system Pixel world building with Glow currency 25-minute focus timer with sounds Daily streaks and streak savers Smart phone reminders Friend sharing and world viewing No password sign-in with email Cross-device sync Multiple world locations unlocked by leveling	Two-way sync across Google, Microsoft, Apple and CardDAV Merge duplicates in one go, or review them one by one Full change history with undo capability Backups and vCard export Sync frequency control (hourly, daily, or manual) Set accounts to read-only mode Preserve all phone numbers and email addresses Up to 5 encrypted account backups 12-month undo history Restore deleted contacts for 12 months
What makes it different	Free forever with no credit card required Makes homework engaging through pixel world gamification Automatic Canvas assignment syncing Integrates school and personal tasks in one place Works on any device as a web app	Syncs across all major platforms in both directions automatically Encrypted contacts with privacy key per account Undo any change for up to 12 months No time limit on free plan Automatic duplicate detection and optional auto-merge
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	5 +4 (up) since last check	Not checked yet no change since last check
Trust Flow (Majestic)	0	0
Citation Flow (Majestic)	0	11
Referring domains (Majestic)	1	1

5 details filled in for both companies.

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