# Sphere Whiteboard vs CT Chat

Sphere Whiteboard and CT Chat are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Sphere Whiteboard ships an update fortnightly, CT Chat every 11 days. The most recent releases landed on October 7, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Sphere Whiteboard | CT Chat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ct-chat/id6773633293/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 11 days** |
| Monetization | — | Free |
| Size | 42 MB | 50 MB |
| Requires iOS | **15.1** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sphere Innovations](https://appshunter.io/developer/1568741546) | [Commodity Technologies Limited](https://appshunter.io/developer/1511953356) |

## What reviewers say

### Sphere Whiteboard

[App page](https://appshunter.io/ios/app/sphere-whiteboard/id6743793852)

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

**In-app purchases:** none


### CT Chat

[App page](https://appshunter.io/ios/app/ct-chat/id6773633293)

A secure and reliable real-time messaging application designed for commodity market professionals. It offers full message accountability, file sharing, and group chat capabilities. Track messages, share media, and search conversations efficiently.

**Highlights:** Real-time messaging with read receipts, Blast message tracking, File and media sharing, Full-text search, Push notifications with muting, QR code contact discovery

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

**In-app purchases:** none


## Frequently asked questions

### Is Sphere Whiteboard free?

Sphere Whiteboard is free to download, with no in-app purchases.

### Is CT Chat free?

CT Chat is free to download, with no in-app purchases.

### Do Sphere Whiteboard or CT Chat have ads?

Neither Sphere Whiteboard nor CT Chat shows ads.

### Which is updated more often, Sphere Whiteboard or CT Chat?

Sphere Whiteboard ships an update fortnightly, and CT Chat every 11 days. Most recently, Sphere Whiteboard was updated on October 7, 2026 and CT Chat on October 12, 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.*