InstantMarkets vs ITB Inbox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
InstantMarkets
Discover new business opportunities, including RFPs and contracts, that match your products and services. Monitor public sector customers, understand their needs, and gain insights to strategize and increase your chances of winning bids. Access a vast database of procurement transactions from thousands of agencies.
- Discover new business opportunities
- Access RFPs, RFQs, and contracts
- Monitor public sector customers
- Analyze competitor strategies
- Receive new opportunity alerts
- Search thousands of agencies
Read full descriptionHide full description
Would you like to be the first to learn of new business opportunities that best fit your products/services, are already budgeted and will be awarded soon, either to you or to your competitor? InstantMarkets provides the widest exposure to procurement and sourcing transactions from across the web. Find active and past opportunities (RFP, RFQ, RFI, ITB, IFB, CSP, CSB, pre-bid notices), MBE/WBE set-asides, contracts, awards, SOWs, purchase orders – even invoices. With the insights you gain from InstantMarkets, you monitor all your public sector customers from one location, understand your customers better, target your competitors, and maximize your chances of winning. InstantMarkets sources include thousands of public websites such as sam.gov, fpds.gov, and others listed at https://www.instantmarkets.com/agency (it may take a minute to load this searchable list of 25000+ agencies). Instant Markets is an advanced and comprehensive Business Search Engine: * Free: Absolutely no cost for all search and notification features. * Advanced search algorithms help you find the best opportunities for your products and services. * Alert/Notification of new opportunities. * Instant access to tens of thousands of current and historical RFx transactions from thousands of prospective customers. Find awards and contracts for similar RFx transactions and use that insight to help strategize how to prepare your RFx response. IMPORTANT: Instant Markets is a private organization without any affiliation with public sector/government agencies nor it represents any government agency
ITB Inbox
Manage Invitation to Bid (ITB) emails from PlanHub efficiently. Receive instant notifications for new bids, view project details, and communicate directly with General Contractors. Streamline your construction bidding process on the go.
- Instant ITB notifications
- View project details and files
- Direct communication with contractors
- Quick bid decision making
- Team ITB assignment
- Integrated PlanHub messaging
Read full descriptionHide full description
"“Introducing ITB Inbox – your dedicated mobile solution for managing Invitation to Bid (ITB) emails from PlanHub. Key Features: • Instant Notifications: Get push alerts whenever a new ITB arrives. • Comprehensive Project Details: View project info and files with ease. • Direct Communication: Message or call General Contractors directly from the app. • Quick Decision Making: Evaluate bids and make go/no-go decisions on the spot. • Team Collaboration: Assign ITBs to your team through the Bid Board. • Integrated Messaging: Access all your PlanHub messages in one place. Streamline your bidding process with ITB Inbox – designed for construction professionals on the move. Download now and never miss a bid opportunity!”"
Screenshots
Verdict
The clearest difference is rating: InstantMarkets at 3.7 against ITB Inbox's 2.5. InstantMarkets also leads on device support (3 vs 1). On price, ratings volume, update cadence and ads 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.
InstantMarkets holds the better App Store score, 3.7 against 2.5. Both are backed by a comparable volume of ratings — 11 and 6 respectively.
InstantMarkets ships an update every 2 months, ITB Inbox every 6 weeks. The most recent releases landed on June 1, 2026 and September 9, 2026 respectively.
| Parameter | InstantMarkets | ITB Inbox |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (11 ratings) — better | 2.5 (6 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 11 — better | 6 |
| Update frequency | Every 2 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 37 MB | 127 MB |
| Age rating | 4+ | 17+ |
| Developer | Instant Systems, Inc. | PlanHub |
Customer experience
InstantMarkets
ITB Inbox
In-app purchases
InstantMarkets
No in-app purchases
ITB Inbox
No in-app purchases








