# Backflow Tester Exam Prep vs Canada Citizenship Test Study

The clearest difference is in-app purchases: Canada Citizenship Test Study at none against Backflow Tester Exam Prep's 3. Canada Citizenship Test Study also leads on update cadence (monthly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Backflow Tester Exam Prep sells 3 in-app purchases, starting at $9.99 per month. Canada Citizenship Test Study asks for nothing beyond the download.

Backflow Tester Exam Prep ships an update every 3 months, Canada Citizenship Test Study monthly. The most recent releases landed on October 7, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Backflow Tester Exam Prep | Canada Citizenship Test Study |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Size | 6 MB | 54 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 17+ |
| Developer | [Deeun Inc.](https://appshunter.io/developer/1691824695) | [Hang Xiong](https://appshunter.io/developer/999558225) |

## What reviewers say

### Backflow Tester Exam Prep

[App page](https://appshunter.io/ios/app/backflow-tester-exam-prep/id6760266860)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Backflow Tester Pro - Monthly | $9.99 | per month |
| Annual Access | $24.99 | per year |
| Pro - Lifetime Access | $39.99 | one-time |


### Canada Citizenship Test Study

[App page](https://appshunter.io/ios/app/canada-citizenship-test-study/id6760324594)

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

**In-app purchases:** none


## Frequently asked questions

### Is Backflow Tester Exam Prep free?

Backflow Tester Exam Prep is free to download, with in-app purchases available.

### Is Canada Citizenship Test Study free?

Canada Citizenship Test Study is free to download, with no in-app purchases.

### Do Backflow Tester Exam Prep or Canada Citizenship Test Study have ads?

Neither Backflow Tester Exam Prep nor Canada Citizenship Test Study shows ads.

### Which is updated more often, Backflow Tester Exam Prep or Canada Citizenship Test Study?

Backflow Tester Exam Prep ships an update every 3 months, and Canada Citizenship Test Study monthly. Most recently, Backflow Tester Exam Prep was updated on October 7, 2026 and Canada Citizenship Test Study on October 4, 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.*