# Gantt Viewer vs SAU

The clearest difference is review sentiment: SAU at 64% against Gantt Viewer's 0%. SAU also leads on rating (3.3 vs 1.0) and device support (4 vs 1). Gantt Viewer's advantage is iOS requirement (8.0 vs 17.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Gantt Viewer sells 1 one-off in-app purchase and SAU sells 6 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

SAU holds the better App Store score, 3.3 against 1.0. Both are backed by a comparable volume of ratings — 2 and 4 respectively. Written reviews point the same way: 0% of Gantt Viewer's written reviews are positive against 64% of SAU's.

Gantt Viewer ships an update every 5 months, SAU every 4 months. The most recent releases landed on October 8, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Gantt Viewer | SAU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/gantt-viewer/id654944245/reviews) | **[3.3 (4 ratings)](https://appshunter.io/ios/app/sau-task-tracker-and-projects/id1509974376/reviews)** |
| Number of ratings | 2 | **4** |
| Positive reviews | 0.0% of reviews | **63.6% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 months** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 17 MB | 65 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | iPad | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Artezio LLC](https://appshunter.io/developer/595916023) | [SAU2DO Pte. Ltd.](https://appshunter.io/developer/1509973835) |

## What reviewers say

### Gantt Viewer

[App page](https://appshunter.io/ios/app/gantt-viewer/id654944245)

This application allows users to view Microsoft Project files on their mobile devices. It supports various project views, including Gantt charts and resource usage, with intuitive touch gestures for navigation. Projects can be added from external sources like email and cloud storage.

**Highlights:** View Microsoft Project files (MPP/MPPX), Gantt Chart, Resource Usage, Task Usage views, Touch-based navigation with gestures, Add projects from Email, Dropbox, etc., Direct access from cloud storage

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gantt Viewer full version | Free | one-time |


### SAU

[App page](https://appshunter.io/ios/app/sau-task-tracker-and-projects/id1509974376)

Organize your life and work with this comprehensive task management tool. Create to-do lists, plan projects, and collaborate with others seamlessly across all your devices. Enjoy offline functionality and visual progress tracking.

**Highlights:** Task lists and daily task view, Project creation and management, Team collaboration and task assignment, Cross-device synchronization, Offline functionality, Progress tracking with charts, Email task reminders

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Pro | $2.99 | per month |
| Premium Business | $5.49 | per month |
| Premium Pro | $29.99 | per year |
| Premium Business | $54.99 | per year |
| Premium Pro | $59.99 | one-time |
| Premium Business | $124.99 | one-time |


## Frequently asked questions

### Is Gantt Viewer free?

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

### Is SAU free?

SAU is free to download, with in-app purchases available.

### Which has better reviews, Gantt Viewer or SAU?

SAU is rated higher. Gantt Viewer averages 1.0 out of 5 from 2 ratings, while SAU averages 3.3 from 4 ratings.

### Do Gantt Viewer or SAU have ads?

Neither Gantt Viewer nor SAU shows ads.

### Which is updated more often, Gantt Viewer or SAU?

Gantt Viewer ships an update every 5 months, and SAU every 4 months. Most recently, Gantt Viewer was updated on October 8, 2026 and SAU on October 1, 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.*