# InstantMarkets vs ITB Inbox

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.

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.

## The numbers

| Metric | InstantMarkets | ITB Inbox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (11 ratings)](https://appshunter.io/ios/app/instantmarkets/id1369363159/reviews)** | [2.5 (6 ratings)](https://appshunter.io/ios/app/itb-inbox/id6741428619/reviews) |
| Number of ratings | **11** | 6 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 37 MB | 127 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Instant Systems, Inc.](https://appshunter.io/developer/1070012604) | [PlanHub](https://appshunter.io/developer/1631169352) |

## What reviewers say

### InstantMarkets

[App page](https://appshunter.io/ios/app/instantmarkets/id1369363159)

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:** macOS Compatibility

**In-app purchases:** none


### ITB Inbox

[App page](https://appshunter.io/ios/app/itb-inbox/id6741428619)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*