SubItUp vs TDM OS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SubItUp
Manage your work schedule, request time off, and swap shifts with colleagues. For managers, this app allows for shift creation, editing, and approval of requests.
- View work schedule
- Request time off
- Add, Drop, or Swap shifts
- Create and edit shifts
- Approve shift requests
- Approve RTOs
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This app is intended for those who make use of the 'SubItUp' platform. As an employee, you can access your work schedule, request time off and make requests to Add, Drop, or Swap your shifts with your coworkers. As a manager, you can create and edit shifts, approve pending requests for shifts and RTOs, and more.
TDM OS
This app functions as a product marketplace with integrated messaging. Users can browse, search, and filter items, view stock status, and communicate directly with sellers through a unified inbox.
- Browse and search product catalog
- Filter by category
- View current stock status
- Direct messaging with sellers
- Unified inbox with unread indicators
- Product photos, descriptions, and pricing
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TDM is a product marketplace with built-in messaging. Browse the full catalog or filter by category, and use search to find specific items. Each product shows current availability, in stock, low stock, or out of stock along with photos, a description, and price. When you have a question about an item, you can message the seller directly from the product page. Conversations are kept in a single inbox, organized by general and product-specific threads, with unread indicators. Features Browse and search the product catalog Filter by category Current stock status on every product Product photos, descriptions, and pricing Direct messaging with sellers Unified inbox with unread indicators Profile and account management
Screenshots
Verdict
The clearest difference is review sentiment: TDM OS at 100% against SubItUp's 13%. TDM OS also leads on rating (5.0 vs 1.9). SubItUp's advantage is ratings volume (231 vs 2). On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
TDM OS holds the better App Store score, 5.0 against 1.9. That said, the two scores are not equally well evidenced: SubItUp has 231 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 13% of SubItUp's written reviews are positive against 100% of TDM OS's.
SubItUp ships an update every 2 weeks, TDM OS every 10 days. The most recent releases landed on October 14, 2026 and October 6, 2026 respectively.
| Parameter | SubItUp | TDM OS |
|---|---|---|
| Price | Free | Free |
| Rating | 1.9 (231 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 13.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 231 — better | 2 |
| Update frequency | Every 2 weeks | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 48 MB | 41 MB |
| Age rating | 4+ | 17+ |
| Developer | SubItUp | Touchdown Promotions LLC |
Customer experience
SubItUp
TDM OS
In-app purchases
SubItUp
No in-app purchases
TDM OS
No in-app purchases
