# Cahokia 187 vs OPSRC

Cahokia 187 and OPSRC 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.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 5, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Cahokia 187 | OPSRC |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Size | 148 MB | 143 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Cahokia Unit School District 187](https://appshunter.io/developer/1688057574) | [Oklahoma Public School Resource Center](https://appshunter.io/developer/1757000714) |

## What reviewers say

### Cahokia 187

[App page](https://appshunter.io/ios/app/cahokia-187/id6449201151)

**Features:** Vision Pro support

**In-app purchases:** none


### OPSRC

[App page](https://appshunter.io/ios/app/opsrc/id6538714688)

**In-app purchases:** none


## Frequently asked questions

### Is Cahokia 187 free?

Cahokia 187 is free to download, with no in-app purchases.

### Is OPSRC free?

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

### Do Cahokia 187 or OPSRC have ads?

Neither Cahokia 187 nor OPSRC shows ads.

### Which is updated more often, Cahokia 187 or OPSRC?

Cahokia 187 ships an update every 3 months, and OPSRC every 3 months. Most recently, Cahokia 187 was updated on October 5, 2026 and OPSRC on September 29, 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.*