# DevPrep vs Lattice

The clearest difference is in-app purchases: Lattice at none against DevPrep's 1. DevPrep's advantage is device support (4 vs 2). On price, ads and iOS requirement there is nothing between them.

Both are free to download. DevPrep sells 1 in-app purchase, starting at $2.99 per 6 months. Lattice asks for nothing beyond the download.

## The numbers

| Metric | DevPrep | Lattice |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | — |
| Size | 28 MB | 43 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Aliaksei Yelin](https://appshunter.io/developer/1502827500) | [Embedded Nature LLC](https://appshunter.io/developer/1881819030) |

## What reviewers say

### DevPrep

[App page](https://appshunter.io/ios/app/devprep-coding-interview/id1527624816)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get full access | $2.99 | per 6 months |


### Lattice

[App page](https://appshunter.io/ios/app/lattice-coding-interviews/id6811136881)

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

**In-app purchases:** none


## Frequently asked questions

### Is DevPrep free?

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

### Is Lattice free?

Lattice is free to download, with no in-app purchases.

### Do DevPrep or Lattice have ads?

Neither DevPrep nor Lattice shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*