What is the best alternative to Contacts Sync: Google & More on iPhone?

Copy My Data - Smart Transfer, S tier, #1 in data transfer.

Is there a free alternative to Contacts Sync: Google & More?

Yes: Copy My Data - Smart Transfer (S tier, #1) is free to download.

Yes. 4 apps rank above it in data transfer: Copy My Data - Smart Transfer (#1), Copy My Data (#2), Verizon Content Transfer (#3) and more.

Contacts Sync: Google & More is C tier, #5 of 8 in data transfer. Here is everything that competes with it on iPhone, in tier order.

1
Copy My Data - Smart TransferShigher tier
Free download · ★ 4.5 · 16,242 ratings · score 90
Wireless app that copies contacts, calendars, photos, videos and files between phones over a shared WiFi network.
2
Copy My DataAhigher tier
Free + IAP · ★ 4.2 · 2,611 ratings · score 85
Moves files to iPhone or iPad over Wi-Fi, imports photos and documents, and exports contacts as VCF or CSV, processed.
3
Verizon Content TransferAhigher tier
Free download · ★ 4.7 · 32,699 ratings · score 85
Moves contacts, photos, videos, calendars and reminders from an old device to a new one by scanning a QR code.
4
Smart Transfer AppAhigher tier
Free download · ★ 4.5 · 341 ratings · score 81
Moves contacts, photos, videos, music and more between phones over Wi-Fi or hotspot using an Activation Code.
6
Contacts MoverC
Free + IAP · ★ 4.7 · 2,696 ratings · score 60
Syncs or moves contacts between any two contact accounts on iPhone, with 2-way, 1-way and manual modes.
7
Easy Backup.D
Free download · ★ 4.8 · 10,593 ratings · score 58
Backs up, restores and transfers phone contacts, with cloud backup or exporting a.vcf file by email or share services.
8
Export ContactD
Free + IAP · ★ 4.6 · 3,720 ratings · score 56
Exports iPhone or iPad contacts to Excel, CSV or vCard files for backup or transfer.

What is the best alternative to Contacts Sync: Google & More on iPhone?: Copy My Data - Smart Transfer, S tier, #1 in data transfer.
Is there a free alternative to Contacts Sync: Google & More?: Yes: Copy My Data - Smart Transfer (S tier, #1) is free to download.
Does anything rank above Contacts Sync: Google & More?: Yes. 4 apps rank above it in data transfer: Copy My Data - Smart Transfer (#1), Copy My Data (#2), Verizon Content Transfer (#3) and more.