# 551 Madison vs C12 Community 551 Madison and C12 Community are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference. Both are free to download. Neither carries in-app purchases, so what you see is what you pay. 551 Madison ships an update every 2 months, C12 Community every 3 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively. ## The numbers | Metric | 551 Madison | C12 Community | | --- | --- | --- | | Price | Free | Free | | In-app purchases | No | No | | Ads | No | No | | Update frequency | **Every 2 months** | Every 3 months | | Size | 123 MB | 85 MB | | Requires iOS | **15.0** | 15.6 | | Devices | iPhone, iPod | iPhone, iPod | | Age rating | 4+ | 17+ | | Developer | [Sharry Europe s.r.o.](https://appshunter.io/developer/1231851310) | [SANTANEL ASOCIADOS SA DE CV](https://appshunter.io/developer/1807973784) | ## What reviewers say ### 551 Madison [App page](https://appshunter.io/ios/app/551-madison/id6444109258) **Features:** macOS Compatibility, Apple Wallet **In-app purchases:** none ### C12 Community [App page](https://appshunter.io/ios/app/c12-community/id6744528273) **In-app purchases:** none ## Frequently asked questions ### Is 551 Madison free? 551 Madison is free to download, with no in-app purchases. ### Is C12 Community free? C12 Community is free to download, with no in-app purchases. ### Do 551 Madison or C12 Community have ads? Neither 551 Madison nor C12 Community shows ads. ### Which is updated more often, 551 Madison or C12 Community? 551 Madison ships an update every 2 months, and C12 Community every 3 months. Most recently, 551 Madison was updated on October 27, 2026 and C12 Community on October 24, 2026. --- *Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*