# Chicago OEMC vs KeysKeep

The clearest difference is rating: KeysKeep at 5.0 against Chicago OEMC's 3.6. KeysKeep also leads on update cadence (every 2 weeks vs every 18 months) and iOS requirement (13.0 vs 15.6). Chicago OEMC's advantage is ratings volume (16 vs 3). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

KeysKeep holds the better App Store score, 5.0 against 3.6. That said, the two scores are not equally well evidenced: Chicago OEMC has 16 ratings behind it against 3, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Chicago OEMC ships an update every 18 months, KeysKeep every 2 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Chicago OEMC | KeysKeep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (16 ratings)](https://appshunter.io/ios/app/chicago-oemc/id1659713940/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/keyskeep/id6754389079/reviews)** |
| Number of ratings | **16** | 3 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 29 MB | 49 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [City of Chicago](https://appshunter.io/developer/1441580122) | [Emaginesites, LLC](https://appshunter.io/developer/1848136756) |

## What reviewers say

### Chicago OEMC

[App page](https://appshunter.io/ios/app/chicago-oemc/id1659713940)

Receive critical safety alerts and access emergency resources directly from Chicago's Office of Emergency Management and Communications. This app provides essential tools to help you stay prepared for any situation.

**Highlights:** Official safety alerts, Instant access to resources, Emergency preparedness tools, Convenient all-in-one app

**Features:** macOS Compatibility

**In-app purchases:** none


### KeysKeep

[App page](https://appshunter.io/ios/app/keyskeep/id6754389079)

This app helps piano students build consistent practice habits through goal setting, smart reminders, and streak tracking. It uses behavioral science principles to make practice engaging and rewarding, visualized through progress tracking and motivational nudges.

**Highlights:** Goal setting and progress tracking, Smart practice reminders, Streak visualization and motivation, Habit formation science, Minimalist dark theme design, Distraction-free typography

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chicago OEMC free?

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

### Is KeysKeep free?

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

### Which has better reviews, Chicago OEMC or KeysKeep?

KeysKeep is rated higher. Chicago OEMC averages 3.6 out of 5 from 16 ratings, while KeysKeep averages 5.0 from 3 ratings.

### Do Chicago OEMC or KeysKeep have ads?

Neither Chicago OEMC nor KeysKeep shows ads.

### Which is updated more often, Chicago OEMC or KeysKeep?

Chicago OEMC ships an update every 18 months, and KeysKeep every 2 weeks. Most recently, Chicago OEMC was updated on November 3, 2026 and KeysKeep on October 30, 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.*