# Viewer for Trello vs Mainspace

The clearest difference is in-app purchases: Mainspace at none against Viewer for Trello's 1. Viewer for Trello's advantage is update cadence (every 4 days vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Viewer for Trello sells 1 one-off in-app purchase. Mainspace asks for nothing beyond the download.

Viewer for Trello ships an update every 4 days, Mainspace every 6 weeks. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Viewer for Trello | Mainspace |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mainspace/id6464720411/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 6 weeks |
| Monetization | — | Ad-supported |
| Size | 2 MB | 44 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, Apple TV | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Appic Ltd.](https://appshunter.io/developer/984875987) | [Harto Walls LLC](https://appshunter.io/developer/1706394718) |

## What reviewers say

### Viewer for Trello

[App page](https://appshunter.io/ios/app/viewer-for-trello/id1548761411)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Board Access | $4.99 | one-time |


### Mainspace

[App page](https://appshunter.io/ios/app/mainspace/id6464720411)

Connect with your workspace and community through messaging, event calendars, and booking features. This flexible work app helps you find the ideal environment and stay productive.

**Highlights:** Community messaging, Event calendars, Workspace bookings, Real-time availability, User-friendly interface

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

**In-app purchases:** none


## Frequently asked questions

### Is Viewer for Trello free?

Viewer for Trello is free to download, with in-app purchases available.

### Is Mainspace free?

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

### Do Viewer for Trello or Mainspace have ads?

Neither Viewer for Trello nor Mainspace shows ads.

### Which is updated more often, Viewer for Trello or Mainspace?

Viewer for Trello ships an update every 4 days, and Mainspace every 6 weeks. Most recently, Viewer for Trello was updated on October 10, 2026 and Mainspace on October 24, 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.*