# DevPrep vs Tech Interview Prep

The clearest difference is in-app purchases: Tech Interview Prep at none against DevPrep's 5. Tech Interview Prep also leads on update cadence (daily vs every 2 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. DevPrep sells 5 one-off in-app purchases. Tech Interview Prep asks for nothing beyond the download.

DevPrep ships an update every 2 days, Tech Interview Prep daily. The most recent releases landed on September 24, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | DevPrep | Tech Interview Prep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 days | **Daily** |
| Size | 149 MB | 25 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Thieu Khue](https://appshunter.io/developer/1554439862) | [Aman Navani](https://appshunter.io/developer/1866204326) |

## What reviewers say

### DevPrep

[App page](https://appshunter.io/ios/app/devprep-ai-interview-coach/id6755906092)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Backend Scale pack | $9.99 | one-time |
| Data Structure & Algorithms pack | $9.99 | one-time |
| System Design pack | $9.99 | one-time |
| Frontend Engineering pack | $9.99 | one-time |
| Unlock all Pro Packs | $29.99 | one-time |


### Tech Interview Prep

[App page](https://appshunter.io/ios/app/tech-interview-prep/id6757340798)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DevPrep free?

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

### Is Tech Interview Prep free?

Tech Interview Prep is free to download, with no in-app purchases.

### Do DevPrep or Tech Interview Prep have ads?

Neither DevPrep nor Tech Interview Prep shows ads.

### Which is updated more often, DevPrep or Tech Interview Prep?

DevPrep ships an update every 2 days, and Tech Interview Prep daily. Most recently, DevPrep was updated on September 24, 2026 and Tech Interview Prep on September 7, 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.*