# Co vs SAT Study Guide

The clearest difference is price: SAT Study Guide at Free against Co's $1.99. SAT Study Guide also leads on update cadence (every 6 months vs every 30 months) and device support (3 vs 1). Co's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 15). On ads there is nothing between them.

SAT Study Guide is free to download; Co costs $1.99 up front. SAT Study Guide sells 1 one-off in-app purchase. Co asks for nothing beyond the download.

Co ships an update every 30 months, SAT Study Guide every 6 months. The most recent releases landed on October 26, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Co | SAT Study Guide |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 30 months | **Every 6 months** |
| Size | 17 MB | 5 MB |
| Requires iOS | **12.0** | 15 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Aleesha Kondys](https://appshunter.io/developer/478569400) | [Yasir Gasim Hamid Hassan](https://appshunter.io/developer/1881239610) |

## What reviewers say

### Co

[App page](https://appshunter.io/ios/app/co-ordinates/id594462845)

**Features:** macOS Compatibility

**In-app purchases:** none


### SAT Study Guide

[App page](https://appshunter.io/ios/app/sat-study-guide-sat-prep-test/id6763481945)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SAT Study Guide Pro | $9.99 | one-time |


## Frequently asked questions

### Is Co free?

Co costs $1.99, with no in-app purchases.

### Is SAT Study Guide free?

SAT Study Guide is free to download, with in-app purchases available.

### Do Co or SAT Study Guide have ads?

Neither Co nor SAT Study Guide shows ads.

### Which is updated more often, Co or SAT Study Guide?

Co ships an update every 30 months, and SAT Study Guide every 6 months. Most recently, Co was updated on October 26, 2026 and SAT Study Guide on October 23, 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.*