Comparison

ManyTime vs Gantt Viewer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Event grouping by type
  • Quick event search
  • Event details with links
  • Dropbox integration
  • Customizable event categories
Features
Read full description

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

About

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.

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
Read full description

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

ManyTime3 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on September 30, 2026 and October 8, 2026 respectively.

Scorecard2 real differences · 8 level
ManyTime versus Gantt Viewer: the parameters behind the verdict, then further details
ParameterManyTimeGantt Viewer
PriceFreeFree
Rating2.0 (1 ratings) — better1.0 (2 ratings)
Positive reviews0.0% of reviews0.0% of reviews
Number of ratings12 — better
Update frequencyEvery 5 monthsEvery 5 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad — betteriPad
Requires iOS17.68.0 — better
Further details — not scored
Size9 MB17 MB
Age rating4+4+
DeveloperTaiji MatsuokaArtezio LLC

Customer experience

ManyTime

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Gantt Viewer

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

1 purchases

ManyTime

One-time1
  • Additions$4.99
1 purchases

Gantt Viewer

One-time1
  • Gantt Viewer full versionFree

Questions

Is ManyTime free?
ManyTime is free to download, with in-app purchases available.
Is Gantt Viewer free?
Gantt Viewer is free to download, with in-app purchases available.
Which has better reviews, ManyTime or Gantt Viewer?
ManyTime is rated higher. ManyTime averages 2.0 out of 5 from 1 ratings, while Gantt Viewer averages 1.0 from 2 ratings.
Do ManyTime or Gantt Viewer have ads?
Neither ManyTime nor Gantt Viewer shows ads.
Which is updated more often, ManyTime or Gantt Viewer?
ManyTime ships an update every 5 months, and Gantt Viewer every 5 months. Most recently, ManyTime was updated on September 30, 2026 and Gantt Viewer on October 8, 2026.

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