# Security1stAgent ONE vs Circle Auction

The clearest difference is in-app purchases: Circle Auction at none against Security1stAgent ONE's 2. Circle Auction also leads on iOS requirement (12.0 vs 16.0). Security1stAgent ONE's advantage is rating (4.8 vs 4.4). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Security1stAgent ONE sells 2 in-app purchases, starting at $0.99 per month. Circle Auction asks for nothing beyond the download.

Security1stAgent ONE holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 5 and 7 respectively.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on June 5, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | Security1stAgent ONE | Circle Auction |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (5 ratings)](https://appshunter.io/ios/app/security1stagent-one/id434578332/reviews)** | [4.4 (7 ratings)](https://appshunter.io/ios/app/circle-auction/id6451309517/reviews) |
| Number of ratings | 5 | **7** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Freemium | **Free** |
| Size | 357 MB | 55 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 9+ | 17+ |
| Developer | [Security 1st Title LLC](https://appshunter.io/developer/1701815219) | [International Auction Partners, Inc](https://appshunter.io/developer/1575528389) |

## What reviewers say

### Security1stAgent ONE

[App page](https://appshunter.io/ios/app/security1stagent-one/id434578332)

Generate buyer estimates and seller net sheets for real estate professionals. Customize reports for clients and access city/county-specific closing costs. Offers a free plan and a premium subscription with advanced features.

**Highlights:** Buyer Estimates, Seller Net Sheets, Customizable Reports, City/County Specific Closing Costs, Free Plan Available, Premium Subscription

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Yearly | $9.99 | per year |


### Circle Auction

[App page](https://appshunter.io/ios/app/circle-auction/id6451309517)

Discover fine art, antiques, jewelry, and modern design pieces through curated online auctions. Browse catalogs, register to bid, and receive real-time alerts for items you're watching. Experience the thrill of live auctions from anywhere and track your bidding history.

**Highlights:** Browse auction catalogs, Swift registration for auctions, Watch items and receive notifications, Real-time bid alerts, Online live bidding, View past bids and acquisitions

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Security1stAgent ONE free?

Security1stAgent ONE is free to download, with in-app purchases available.

### Is Circle Auction free?

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

### Which has better reviews, Security1stAgent ONE or Circle Auction?

Security1stAgent ONE is rated higher. Security1stAgent ONE averages 4.8 out of 5 from 5 ratings, while Circle Auction averages 4.4 from 7 ratings.

### Do Security1stAgent ONE or Circle Auction have ads?

Neither Security1stAgent ONE nor Circle Auction shows ads.

### Which is updated more often, Security1stAgent ONE or Circle Auction?

Security1stAgent ONE ships an update every 3 months, and Circle Auction every 3 months. Most recently, Security1stAgent ONE was updated on June 5, 2026 and Circle Auction on June 4, 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.*