# Cornerstone Bids vs Vowlock

The clearest difference is in-app purchases: Cornerstone Bids at none against Vowlock's 3. Cornerstone Bids also leads on ads (none vs shown) and iOS requirement (15.0 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Vowlock sells 3 in-app purchases, starting at $9.99 per month. Cornerstone Bids asks for nothing beyond the download.

Cornerstone Bids ships an update every 3 days, Vowlock every 4 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Cornerstone Bids | Vowlock |
| --- | --- | --- |
| 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 4 days |
| Monetization | Free | — |
| Size | 0 MB | 16 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Cornerstonebids LLC](https://appshunter.io/developer/6792765226) | [Eren Demirkesen](https://appshunter.io/developer/6790159090) |

## 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


### Vowlock

[App page](https://appshunter.io/ios/app/vowlock-strict-app-blocker/id6798383339)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Monthly | $9.99 | per month |
| Plus Annual | $49.99 | per year |
| Plus Lifetime | $74.99 | one-time |


## Frequently asked questions

### Is Cornerstone Bids free?

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

### Is Vowlock free?

Vowlock is free to download, with in-app purchases available.

### Do Cornerstone Bids or Vowlock have ads?

Vowlock shows ads; Cornerstone Bids does not.

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

Cornerstone Bids ships an update every 3 days, and Vowlock every 4 days. Most recently, Cornerstone Bids was updated on October 24, 2026 and Vowlock on October 25, 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.*