ManyTime vs Gantt Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ManyTime
This event management tool helps organize complex schedules by grouping events by type. Quickly find upcoming events with a single button push and access event details like URLs, email addresses, and map links.
- Event grouping by type
- Quick event search
- Event details with links
- Dropbox integration
- Customizable event categories
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ManyTime is an event management tool using Dropbox. How long does it take until the next event? It becomes clear by one button push. An ordinary calendar -- although it has managed the daily event, if the app has many events, it will become disorderly contents. By changing the idea, it is managed separately by type event group, Let's be able to search the event nearest respectively. Events can contain URL, email address, and the link to map apps. Primary use Year-round schedule 1: Void time, Mercury retrograde, Jupiter retrograde and Mars retrograde 2: Events for Museums 3: General affairs events 4: Events related to accounting 5: Time schedule 7: School events 8: Events of entertainment facilities 9: Schedule of concerts 10: Schedule of sports games 11: Test plan 12: Tidal data 13: Astronomical events 14: Six-week, month old and old calendar Schedule of others 1:Shift work management 2:Schedule of family Navigation use 1:Flyer of retail 2:Travel schedule 3:Scheduled business trip 4:Plan of the visited 5:Record of coordinate data 6:Schedule of shopping Additional features If you purchased the Remove Ad: - The event delete button (trash can icon) - Diary mode for Month Calendar - Color Settings menu - Expand range of years
Gantt Viewer
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.
- 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
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Gantt Viewer is a professional viewer app for Microsoft Project (MPP/MPX) files. The app can easily display small and large project files. Gantt Viewer provides many useful views including tasks, resources, gantt chart and work. The app was developed for touch-based navigation and provides many useful gestures. List of features: * Projects - add projects from external apps like Email, DropBox and other. Keep your favorite projects in the app and view them any time. * Views - display project data in Gantt Chart, Resource Usage and Task Usage views. * Gestures - there are many useful gestures to navigate project data, change view mode and time scale, get details about tasks and resources. * Formats - Gantt Viewer works with the most of the Microsoft Projects (MPP/MPPX) formats. * DropBox - login with your DropBox account and open projects directly from your online storage. Gantt Viewer was developed to let people be more mobile especially when they need to work with their projects and can not spend time at the office.
Screenshots
Verdict
The clearest difference is rating: ManyTime at 2.0 against Gantt Viewer's 1.0. Gantt Viewer's advantage is iOS requirement (8.0 vs 17.6). On price, review sentiment, ratings volume and update cadence there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. ManyTime sells 1 one-off in-app purchase and Gantt Viewer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
ManyTime holds the better App Store score, 2.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 0% and 0% positive.
Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on September 30, 2026 and October 8, 2026 respectively.
| Parameter | ManyTime | Gantt Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (1 ratings) — better | 1.0 (2 ratings) |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 5 months | Every 5 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad — better | iPad |
| Requires iOS | 17.6 | 8.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Taiji Matsuoka | Artezio LLC |
Customer experience
ManyTime
Gantt Viewer
In-app purchases
ManyTime
- Additions$4.99
Gantt Viewer
- Gantt Viewer full versionFree









