# Systems Study vs 787 SV KV Study Guide

The clearest difference is in-app purchases: Systems Study at none against 787 SV KV Study Guide's 2. Systems Study also leads on iOS requirement (17.6 vs 26.0). 787 SV KV Study Guide's advantage is update cadence (every 3 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. 787 SV KV Study Guide sells 2 one-off in-app purchases. Systems Study asks for nothing beyond the download.

Systems Study ships an update every 2 months, 787 SV KV Study Guide every 3 days. The most recent releases landed on October 16, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Systems Study | 787 SV KV Study Guide |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Size | 4 MB | 3 MB |
| Requires iOS | **17.6** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Craig Miller](https://appshunter.io/developer/1818444319) | [Invictus AeroTech Corporation](https://appshunter.io/developer/6818863499) |

## What reviewers say

### Systems Study

[App page](https://appshunter.io/ios/app/systems-study/id6769199221)

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

**In-app purchases:** none


### 787 SV KV Study Guide

[App page](https://appshunter.io/ios/app/787-sv-kv-study-guide/id6818863497)

**Features:** macOS Compatibility, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1-day Trial | Free | one-time |
| Full Study Access | $19.99 | one-time |


## Frequently asked questions

### Is Systems Study free?

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

### Is 787 SV KV Study Guide free?

787 SV KV Study Guide is free to download, with in-app purchases available.

### Do Systems Study or 787 SV KV Study Guide have ads?

Neither Systems Study nor 787 SV KV Study Guide shows ads.

### Which is updated more often, Systems Study or 787 SV KV Study Guide?

Systems Study ships an update every 2 months, and 787 SV KV Study Guide every 3 days. Most recently, Systems Study was updated on October 16, 2026 and 787 SV KV Study Guide on October 31, 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.*