# Big Data Knowledge Test vs CAHIMS Exam Test Prep 2026

The clearest difference is update cadence: Big Data Knowledge Test at every 3 months against CAHIMS Exam Test Prep 2026's every 7 months. CAHIMS Exam Test Prep 2026's advantage is iOS requirement (15.1 vs 17.2). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Big Data Knowledge Test sells 2 in-app purchases, starting at $13.99 per month and CAHIMS Exam Test Prep 2026 sells 9 in-app purchases, starting at $14.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Big Data Knowledge Test ships an update every 3 months, CAHIMS Exam Test Prep 2026 every 7 months. The most recent releases landed on May 16, 2026 and August 13, 2026 respectively.

## The numbers

| Metric | Big Data Knowledge Test | CAHIMS Exam Test Prep 2026 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (5 ratings)](https://appshunter.io/ios/app/cahims-exam-test-prep-2026/id6749772121/reviews)** |
| Number of ratings | — | **5** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 7 months |
| Monetization | — | Free with in-app purchases |
| Size | 9 MB | 49 MB |
| Requires iOS | 17.2 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Cargo Teleport Inc](https://appshunter.io/developer/1761832181) | [Exam Prep OU](https://appshunter.io/developer/1689642184) |

## What reviewers say

### Big Data Knowledge Test

[App page](https://appshunter.io/ios/app/big-data-knowledge-test/id6740737722)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium monthly subscription | $13.99 | per month |
| Lifetime version | $24.99 | one-time |


### CAHIMS Exam Test Prep 2026

[App page](https://appshunter.io/ios/app/cahims-exam-test-prep-2026/id6749772121)

Prepare for the CAHIMS certification exam with up-to-date content, a large question bank, and detailed explanations. Track your progress, create custom study plans, and take simulated exams to build confidence. This app is designed to help you excel in healthcare information management.

**Highlights:** Up-to-date content for 2026 exam, Extensive CAHIMS-style question bank, Detailed explanations for each question, Progress tracking and performance analysis, Customizable study plans, Simulated exam mode, Continuous updates

**Features:** macOS Compatibility

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CAHIMS Weekly Full Access | $14.99 | per 7 days |
| CAHIMS Monthly Full Access | $34.99 | per month |
| CAHIMS Monthly Full Access | $34.99 | per month |
| CAHIMS Quarterly Full Access | $79.99 | per 3 months |
| CAHIMS Quarterly Full Access | $79.99 | per 3 months |
| CAHIMS Semiannual Full Access | $136.99 | per 6 months |
| CAHIMS Semiannual Full Access | $136.99 | per 6 months |
| CAHIMS Annual Full Access | $209.00 | per year |
| CAHIMS Annual Full Access | $209.99 | per year |


## Frequently asked questions

### Is Big Data Knowledge Test free?

Big Data Knowledge Test is free to download, with in-app purchases available.

### Is CAHIMS Exam Test Prep 2026 free?

CAHIMS Exam Test Prep 2026 is free to download, with in-app purchases available.

### Do Big Data Knowledge Test or CAHIMS Exam Test Prep 2026 have ads?

Neither Big Data Knowledge Test nor CAHIMS Exam Test Prep 2026 shows ads.

### Which is updated more often, Big Data Knowledge Test or CAHIMS Exam Test Prep 2026?

Big Data Knowledge Test ships an update every 3 months, and CAHIMS Exam Test Prep 2026 every 7 months. Most recently, Big Data Knowledge Test was updated on May 16, 2026 and CAHIMS Exam Test Prep 2026 on August 13, 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.*