# Cornerstone Bids vs Authenticator App+ ℠

The clearest difference is in-app purchases: Cornerstone Bids at none against Authenticator App+ ℠'s 2. Cornerstone Bids also leads on ads (none vs shown) and device support (3 vs 1). On price and update cadence there is nothing between them.

Both are free to download. Authenticator App+ ℠ sells 2 in-app purchases, starting at $9.99 per 7 days. Cornerstone Bids asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on October 6, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Cornerstone Bids | Authenticator App+ ℠ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/cornerstone-bids/id6792765224/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 days | Every 3 days |
| Monetization | Free | — |
| Size | 0 MB | 14 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Cornerstonebids LLC](https://appshunter.io/developer/6792765226) | [Bakir Store](https://appshunter.io/developer/6793313755) |

## What reviewers say

### 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


### Authenticator App+ ℠

[App page](https://appshunter.io/ios/app/authenticator-app-plus/id6811580623)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $9.99 | per 7 days |
| Premium Yearly | $44.49 | per year |


## Frequently asked questions

### Is Cornerstone Bids free?

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

### Is Authenticator App+ ℠ free?

Authenticator App+ ℠ is free to download, with in-app purchases available.

### Do Cornerstone Bids or Authenticator App+ ℠ have ads?

Authenticator App+ ℠ shows ads; Cornerstone Bids does not.

### Which is updated more often, Cornerstone Bids or Authenticator App+ ℠?

Cornerstone Bids ships an update every 3 days, and Authenticator App+ ℠ every 3 days. Most recently, Cornerstone Bids was updated on October 6, 2026 and Authenticator App+ ℠ on September 28, 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.*