Shift Calendar vs FLEX LNG QDMS Wiki
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Shift Calendar
Easily manage your work schedule with this app designed for shift workers. Customize your shifts, generate schedules automatically, and add important notes to your calendar.
- Customizable shift work
- Automatic cycle scheduling
- Calendar notes
- Clear shift display
Read full descriptionHide full description
Shift Calendar is designed for people who do shift works. It's easy to manage your job and work time - you can customize your shift work - Cycle scheduling, automatic generation of shift work for each day - Calendar notes, write important notes for each day - Shift works display in calendar clearly
FLEX LNG QDMS Wiki
Read full descriptionHide full description
QDMS is an efficient centralized system for management and maintenance of different documentation from teams including safety management manuals, quality management manuals, technical documents, rules and regulations etc. onshore and at sea
Screenshots
Verdict
The clearest difference is in-app purchases: FLEX LNG QDMS Wiki at none against Shift Calendar's 4. FLEX LNG QDMS Wiki also leads on ads (none vs shown). Shift Calendar's advantage is update cadence (every 3 months vs every 15 months) and iOS requirement (11.0 vs 16.0). On price and device support 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. Shift Calendar sells 4 one-off in-app purchases. FLEX LNG QDMS Wiki asks for nothing beyond the download.
Shift Calendar ships an update every 3 months, FLEX LNG QDMS Wiki every 15 months. The most recent releases landed on November 2, 2026 and October 27, 2026 respectively.
| Parameter | Shift Calendar | FLEX LNG QDMS Wiki |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (144 ratings) — better | — |
| Positive reviews | 51.5% of reviews | — |
| Number of ratings | 144 — better | — |
| Update frequency | Every 3 months — better | Every 15 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 27 MB | 35 MB |
| Age rating | 4+ | 17+ |
| Developer | 章健 杨 | MariApps Marine Solutions Pvt. Ltd. |
Bugs and requests
Shift Calendar
Reported bugs
8 issues- One year old records are missing
- Calendar does not always show the correct day
- Data not included in backups
- Recurring shifts require manual setup even in paid version
- Full-length ads for multiple date additions
Show 3 moreShow fewer
- Forced to watch ads to close
- No option for 'no' for premium purchase prompts
- Inability to write to the next day
Requested features
18 requests- Add hourly payment tracking
- Add advance payment tracking
- Add black theme (dark mode)
- Increase character limit for shift names
- Expand emoji usage for shifts
Show 13 moreShow fewer
- Add ability to select multiple days for one entry (iOS)
- Add save and restore feature (e.g., Dropbox)
- Add widget support
- Add option for military time or normal time
- Add ability to add additional users
- Add reminders for shifts
- Sync to iOS calendar
- Add ability to delete users
- Add ability to delete incorrectly added user shifts
- Add ability to write to the next day
- Add statistics for hours worked
- Add support for shift cycles longer than 31 days
- Add ability to share schedule with family members
FLEX LNG QDMS Wiki
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Shift Calendar
- Calendar Notes$0.99
- Remove Ads$0.99
- Pro Version$0.99
Show 1 moreShow fewer
- Add User$0.99
FLEX LNG QDMS Wiki
No in-app purchases
Questions
Is Shift Calendar free?
Is FLEX LNG QDMS Wiki free?
Do Shift Calendar or FLEX LNG QDMS Wiki have ads?
Which is updated more often, Shift Calendar or FLEX LNG QDMS Wiki?
Other comparisons
