# Co vs Relay Smart Agent

The clearest difference is rating: Co at 2.6 against Relay Smart Agent's 1.2. Co also leads on review sentiment (8% vs 0%) and iOS requirement (10.0 vs 15.0). Relay Smart Agent's advantage is update cadence (every 2 months vs every 4 months). On price, ratings volume, 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.

Co holds the better App Store score, 2.6 against 1.2. Both are backed by a comparable volume of ratings — 17 and 33 respectively. Written reviews point the same way: 8% of Co's written reviews are positive against 0% of Relay Smart Agent's.

Co ships an update every 4 months, Relay Smart Agent every 2 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Co | Relay Smart Agent |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.6 (17 ratings)](https://appshunter.io/ios/app/cowriter-universal/id915105799/reviews)** | [1.2 (33 ratings)](https://appshunter.io/ios/app/relay-smart-agent/id1374371214/reviews) |
| Number of ratings | 17 | **33** |
| Positive reviews | **8.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 45 MB | 9 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Don Johnston Incorporated](https://appshunter.io/developer/674099735) | [Lightspeed Solutions, LLC](https://appshunter.io/developer/367422071) |

## What reviewers say

### Co

[App page](https://appshunter.io/ios/app/cowriter-universal/id915105799)

This app provides advanced word prediction and spelling support for students. It offers grammar-smart suggestions and access to millions of topic-specific dictionaries to aid in writing. Built-in text-to-speech functionality helps users review their work.

**Highlights:** Grammar-smart word prediction, Millions of topic-specific dictionaries, Flexspell™ technology for spelling errors, Built-in text-to-speech, Personalized vocabulary and settings

**Features:** macOS Compatibility

**In-app purchases:** none


### Relay Smart Agent

[App page](https://appshunter.io/ios/app/relay-smart-agent/id1374371214)

This application offers web filtering and safety features for iOS devices, ensuring CIPA compliance for schools. It provides on and off-campus protection and reports on student activity, acting as a hardware-free cloud solution.

**Highlights:** CIPA compliant web filtering, On/off campus safety, Student activity reporting, Hardware-free cloud solution, Anytime, anywhere filtering

**In-app purchases:** none


## Frequently asked questions

### Is Co free?

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

### Is Relay Smart Agent free?

Relay Smart Agent is free to download, with no in-app purchases.

### Which has better reviews, Co or Relay Smart Agent?

Co is rated higher. Co averages 2.6 out of 5 from 17 ratings, while Relay Smart Agent averages 1.2 from 33 ratings.

### Do Co or Relay Smart Agent have ads?

Neither Co nor Relay Smart Agent shows ads.

### Which is updated more often, Co or Relay Smart Agent?

Co ships an update every 4 months, and Relay Smart Agent every 2 months. Most recently, Co was updated on November 1, 2026 and Relay Smart Agent on November 2, 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.*