# Tech Interview Prep vs Byter

The clearest difference is in-app purchases: Tech Interview Prep at none against Byter's 4. Tech Interview Prep also leads on update cadence (daily vs every 3 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Byter sells 4 in-app purchases, starting at $14.99 per month. Tech Interview Prep asks for nothing beyond the download.

Tech Interview Prep ships an update daily, Byter every 3 days. The most recent releases landed on October 8, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Tech Interview Prep | Byter |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 3 days |
| Monetization | — | Free with in-app purchases |
| Size | 25 MB | 315 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Aman Navani](https://appshunter.io/developer/1866204326) | [Nutrimatics Inc.](https://appshunter.io/developer/1875403982) |

## What reviewers say

### Tech Interview Prep

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Byter

[App page](https://appshunter.io/ios/app/byter-swipe-and-code/id6758867559)

Sharpen essential engineering skills like debugging, architecture, and systems thinking through bite-sized, swipeable challenges. Practice across various high-impact fields with multiple challenge formats and instant AI feedback.

**Highlights:** Swipeable problem feed, In-app code editor, System design graph builder, Instant AI grading, Daily challenges and streaks, AI mentor for guidance, Skill insights and progress tracking

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Byter Pro Monthly | $14.99 | per month |
| Byter Max Monthly | $39.99 | per month |
| Byter Pro Annual | $129.99 | per year |
| Byter Max Annual | $334.99 | per year |


## Frequently asked questions

### Is Tech Interview Prep free?

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

### Is Byter free?

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

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

Neither Tech Interview Prep nor Byter shows ads.

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

Tech Interview Prep ships an update daily, and Byter every 3 days. Most recently, Tech Interview Prep was updated on October 8, 2026 and Byter on October 2, 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.*