Comparison

InstantMarkets vs ITB Inbox

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

Head to head
About

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.

Highlights
  • Discover new business opportunities
  • Access RFPs, RFQs, and contracts
  • Monitor public sector customers
  • Analyze competitor strategies
  • Receive new opportunity alerts
  • Search thousands of agencies
Features
Read 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

About

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.

Highlights
  • Instant ITB notifications
  • View project details and files
  • Direct communication with contractors
  • Quick bid decision making
  • Team ITB assignment
  • Integrated PlanHub messaging
Features
Read 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

InstantMarkets4 screens
ITB Inbox4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
InstantMarkets versus ITB Inbox: the parameters behind the verdict, then further details
ParameterInstantMarketsITB Inbox
PriceFreeFree
Rating3.7 (11 ratings) — better2.5 (6 ratings)
Positive reviews100.0% of reviews—
Number of ratings11 — better6
Update frequencyEvery 2 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better16.0
Further details — not scored
Size37 MB127 MB
Age rating4+17+
DeveloperInstant Systems, Inc.PlanHub

Customer experience

InstantMarkets

All ratings11 ratings
Positive63.6%
Neutral9.1%
Negative27.3%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

ITB Inbox

All ratings6 ratings
Positive33.3%
Neutral0.0%
Negative66.7%

In-app purchases

None

InstantMarkets

No in-app purchases

None

ITB Inbox

No in-app purchases

Questions

Is InstantMarkets free?
InstantMarkets is free to download, with no in-app purchases.
Is ITB Inbox free?
ITB Inbox is free to download, with no in-app purchases.
Which has better reviews, InstantMarkets or ITB Inbox?
InstantMarkets is rated higher. InstantMarkets averages 3.7 out of 5 from 11 ratings, while ITB Inbox averages 2.5 from 6 ratings.
Do InstantMarkets or ITB Inbox have ads?
Neither InstantMarkets nor ITB Inbox shows ads.
Which is updated more often, InstantMarkets or ITB Inbox?
InstantMarkets ships an update every 2 months, and ITB Inbox every 6 weeks. Most recently, InstantMarkets was updated on June 1, 2026 and ITB Inbox on September 9, 2026.

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