# Sync Calling vs Shiku IM

The clearest difference is rating: Shiku IM at 5.0 against Sync Calling's 4.0. On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Shiku IM holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Sync Calling | Shiku IM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/sync-calling/id478879522/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/shiku-im/id1160132242/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | Free |
| Size | 31 MB | 180 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [ZionDaily.com](https://appshunter.io/developer/478879525) | [Shenzhen Shiku information technology co., LTD](https://appshunter.io/developer/474681307) |

## What reviewers say

### Sync Calling

[App page](https://appshunter.io/ios/app/sync-calling/id478879522)

A private communication tool for church members, featuring photo and video sharing, voice recording, and cloud file storage. It also serves as a platform for church announcements and integrates with a forum app.

**Highlights:** Photo and video sharing, Voice recording and attachments, Cloud file storage (sync-file), Church announcements and bulletins, Integration with Zion forum app, Account login required

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

**In-app purchases:** none


### Shiku IM

[App page](https://appshunter.io/ios/app/shiku-im/id1160132242)

A secure instant messaging app offering high concurrency and availability. It provides a full suite of communication features including text, voice, and video calls, with advanced privacy options and private cloud support.

**Highlights:** High concurrency and availability, End-to-end encryption, Burn after reading messages, Video and voice conferencing, Private cloud deployment, Group chat up to 10,000 members

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

**In-app purchases:** none


## Frequently asked questions

### Is Sync Calling free?

Sync Calling is free to download, with no in-app purchases.

### Is Shiku IM free?

Shiku IM is free to download, with no in-app purchases.

### Which has better reviews, Sync Calling or Shiku IM?

Shiku IM is rated higher. Sync Calling averages 4.0 out of 5 from 2 ratings, while Shiku IM averages 5.0 from 1 ratings.

### Do Sync Calling or Shiku IM have ads?

Neither Sync Calling nor Shiku IM shows ads.

### Which is updated more often, Sync Calling or Shiku IM?

Sync Calling ships an update every 3 weeks, and Shiku IM every 3 weeks. Most recently, Sync Calling was updated on November 1, 2026 and Shiku IM on November 6, 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.*