# Caesium vs Contacts + Sync Google, Backup

The clearest difference is price: Contacts + Sync Google, Backup at Free against Caesium's $2.99. Contacts + Sync Google, Backup also leads on rating (5.0 vs 3.0) and update cadence (every 5 days vs every 4 months). Caesium's advantage is in-app purchases (none vs 3) and ads (none vs shown). On ratings volume, device support and iOS requirement there is nothing between them.

Contacts + Sync Google, Backup is free to download; Caesium costs $2.99 up front. Contacts + Sync Google, Backup sells 3 in-app purchases, starting at $2.99 per 7 days. Caesium asks for nothing beyond the download.

Contacts + Sync Google, Backup holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Caesium ships an update every 4 months, Contacts + Sync Google, Backup every 5 days. The most recent releases landed on September 16, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Caesium | Contacts + Sync Google, Backup |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/caesium/id1490072981/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/contacts-plus-sync-google-backup/id6755145263/reviews)** |
| Number of ratings | 1 | **2** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 5 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 3 MB | 34 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Sebastian Staudt](https://appshunter.io/developer/539259111) | [ERVI FIRST LLC](https://appshunter.io/developer/1620705094) |

## What reviewers say

### Caesium

[App page](https://appshunter.io/ios/app/caesium/id1490072981)

This app offers simple and effortless time-tracking for professionals and freelancers. It provides real-time or retrospective tracking, detailed statistics, and reminders. Data can be synchronized via iCloud and exported to CSV files.

**Highlights:** Real-time or retrospective time-tracking, Statistics and history, Task reminders, iCloud synchronization, CSV import/export, FaceID/TouchID authentication

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Contacts + Sync Google, Backup

[App page](https://appshunter.io/ios/app/contacts-plus-sync-google-backup/id6755145263)

Organize your address book with powerful tools for cleaning up duplicates, deleting contacts in bulk, and managing favorites. Syncs seamlessly with Google Contacts and provides timely reminders for important dates. Includes a business card scanner and backup options.

**Highlights:** Bulk contact deletion, Favorite contact management, Google Contacts synchronization, Birthday and event reminders, Business card scanning, Contact backup and export, Duplicate contact detection

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Monthly | $69.99 | per year |
| Upgrade to PRO | $5.99 | one-time |


## Frequently asked questions

### Is Caesium free?

Caesium costs $2.99, with no in-app purchases.

### Is Contacts + Sync Google, Backup free?

Contacts + Sync Google, Backup is free to download, with in-app purchases available.

### Which has better reviews, Caesium or Contacts + Sync Google, Backup?

Contacts + Sync Google, Backup is rated higher. Caesium averages 3.0 out of 5 from 1 ratings, while Contacts + Sync Google, Backup averages 5.0 from 2 ratings.

### Do Caesium or Contacts + Sync Google, Backup have ads?

Contacts + Sync Google, Backup shows ads; Caesium does not.

### Which is updated more often, Caesium or Contacts + Sync Google, Backup?

Caesium ships an update every 4 months, and Contacts + Sync Google, Backup every 5 days. Most recently, Caesium was updated on September 16, 2026 and Contacts + Sync Google, Backup on September 18, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*