# Test Doctor vs ACT Prep & Test

The clearest difference is update cadence: Test Doctor at every 4 days against ACT Prep & Test's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Test Doctor sells 1 one-off in-app purchase and ACT Prep & Test sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Test Doctor ships an update every 4 days, ACT Prep & Test every 3 months. The most recent releases landed on September 18, 2026 and December 5, 2025 respectively.

## The numbers

| Metric | Test Doctor | ACT Prep & Test |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/test-doctor-act-math/id1426702602/reviews)** | — |
| Number of ratings | **6** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 74 MB | 38 MB |
| Requires iOS | **11.4** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Wayfare Apps, LLC](https://appshunter.io/developer/1139266447) | [学勇 张](https://appshunter.io/developer/590340880) |

## What reviewers say

### Test Doctor

[App page](https://appshunter.io/ios/app/test-doctor-act-math/id1426702602)

This app helps you prepare for the ACT Math section with a smart diagnostic test. It identifies your strengths and weaknesses, then provides personalized study suggestions, articles, and practice problems for efficient learning.

**Highlights:** Smart diagnostic test, Personalized study suggestions, Study articles, Example problems, Targeted practice problems

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to Full Version | $2.99 | one-time |


### ACT Prep & Test

[App page](https://appshunter.io/ios/app/act-prep-and-test/id6496129863)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MONTHLY | $4.99 | per month |
| 3 MONTHS | $9.99 | per 3 months |
| YEARLY | $19.99 | per year |


## Frequently asked questions

### Is Test Doctor free?

Test Doctor is free to download, with in-app purchases available.

### Is ACT Prep & Test free?

ACT Prep & Test is free to download, with in-app purchases available.

### Do Test Doctor or ACT Prep & Test have ads?

Neither Test Doctor nor ACT Prep & Test shows ads.

### Which is updated more often, Test Doctor or ACT Prep & Test?

Test Doctor ships an update every 4 days, and ACT Prep & Test every 3 months. Most recently, Test Doctor was updated on September 18, 2026 and ACT Prep & Test on December 5, 2025.

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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.*