# NOPBM vs DevPrep

The clearest difference is ads: DevPrep at none against NOPBM's shown. DevPrep also leads on iOS requirement (13.0 vs 17.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. NOPBM sells 2 in-app purchases, starting at $9.99 per month and DevPrep sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | NOPBM | DevPrep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | — |
| Size | 88 MB | 25 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DAVES BALTHAZAR CONSULTORIA EM TECNOLOGIA DA INFORMACAO LTDA](https://appshunter.io/developer/1579033955) | [Shohruxbek Atavullayev](https://appshunter.io/developer/1859528937) |

## What reviewers say

### NOPBM

[App page](https://appshunter.io/ios/app/nopbm-learn-languages/id6756617741)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NoPBM Premium Monthly | $9.99 | per month |
| NoPBM Premium Quarterly | $24.99 | per 3 months |


### DevPrep

[App page](https://appshunter.io/ios/app/devprep-coding-interview-prep/id6775566429)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Dart | $12.99 | one-time |
| Unlock JavaScript | $12.99 | one-time |
| Unlock Python | $12.99 | one-time |
| Unlock Swift | $12.99 | one-time |


## Frequently asked questions

### Is NOPBM free?

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

### Is DevPrep free?

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

### Do NOPBM or DevPrep have ads?

NOPBM shows ads; DevPrep does not.

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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.*