# iGPT vs Cornerstone Bids

The clearest difference is update cadence: Cornerstone Bids at every 3 days against iGPT's every 10 days. On price, rating, ratings volume 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.

On the App Store both sit at effectively the same score — 5.0 for iGPT against 5.0 for Cornerstone Bids. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

iGPT ships an update every 10 days, Cornerstone Bids every 3 days. The most recent releases landed on October 15, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | iGPT | Cornerstone Bids |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/igpt-ai-email-intelligence/id6741868157/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/cornerstone-bids/id6792765224/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 3 days** |
| Monetization | Free | Free |
| Size | 15 MB | 0 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [SpikeNow Ltd.](https://appshunter.io/developer/491044400) | [Cornerstonebids LLC](https://appshunter.io/developer/6792765226) |

## What reviewers say

### iGPT

[App page](https://appshunter.io/ios/app/igpt-ai-email-intelligence/id6741868157)

This AI-powered tool connects to your email, documents, and other work tools to provide context-rich answers and insights. It helps you make faster, smarter decisions by understanding your work and offering verifiable information with source citations.

**Highlights:** Connects to email, docs, and tools, Provides context-rich answers, Source citations for verifiable truth, Proactive insights on tasks and meetings, Enterprise-grade privacy (SOC2, GDPR compliant), No file uploads or complex prompts needed

**Features:** Vision Pro support

**In-app purchases:** none


### Cornerstone Bids

[App page](https://appshunter.io/ios/app/cornerstone-bids/id6792765224)

Streamline concrete and masonry estimating with phase-based takeoff calculators and automated pricing. Generate professional proposals quickly from your mobile device or web browser, empowering subcontractors to bid with confidence.

**Highlights:** Phase-based takeoff calculators, Centralized pricing, Quantity tracking, Professional proposal generation, Cross-device access

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iGPT free?

iGPT is free to download, with no in-app purchases.

### Is Cornerstone Bids free?

Cornerstone Bids is free to download, with no in-app purchases.

### Which has better reviews, iGPT or Cornerstone Bids?

iGPT and Cornerstone Bids are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do iGPT or Cornerstone Bids have ads?

Neither iGPT nor Cornerstone Bids shows ads.

### Which is updated more often, iGPT or Cornerstone Bids?

iGPT ships an update every 10 days, and Cornerstone Bids every 3 days. Most recently, iGPT was updated on October 15, 2026 and Cornerstone Bids on October 6, 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.*