# Devv 30 vs Ohm Law

The clearest difference is price: Devv 30 at Free against Ohm Law's $1.99. Devv 30 also leads on update cadence (every 8 days vs every 2 months) and iOS requirement (12.4 vs 15.6). Ohm Law's advantage is in-app purchases (none vs 10) and ads (none vs shown). On device support there is nothing between them.

Devv 30 is free to download; Ohm Law costs $1.99 up front. Devv 30 sells 10 in-app purchases, starting at $6.99 per 7 days. Ohm Law asks for nothing beyond the download.

Devv 30 ships an update every 8 days, Ohm Law every 2 months. Both last shipped on November 4, 2026.

## The numbers

| Metric | Devv 30 | Ohm Law |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 8 days** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 85 MB | 7 MB |
| Requires iOS | **12.4** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Matteo Giardino](https://appshunter.io/developer/1753230979) | [坤 冉](https://appshunter.io/developer/1759927074) |

## What reviewers say

### Devv 30

[App page](https://appshunter.io/ios/app/devv-30-learn-coding/id6504672779)

Learn to code in just 30 days with short, engaging lessons. Build real-world projects, create a portfolio, and prepare for a developer career. Covers Python, JavaScript, HTML, and more.

**Highlights:** Learn popular programming languages, Build real-world projects, Create a portfolio for your resume, Earn a programming certificate, Daily coding challenges, Run code directly in the app

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Devv Pro Weekly | $6.99 | per 7 days |
| Pro Monthly | $6.99 | per month |
| Devv Pro Monthly | $8.99 | per month |
| Devv Pro Monthly | $14.99 | per month |
| Devv Pro 3 Months | $17.99 | per 3 months |
| Pro Yearly | $49.99 | per year |
| Devv Pro Yearly | $49.99 | per year |
| Devv Pro Yearly | $119.99 | per year |
| 1 Challenge Access | $34.99 | one-time |
| Lifetime Access | $69.99 | one-time |


### Ohm Law

[App page](https://appshunter.io/ios/app/ohm-law/id6737541296)

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

**In-app purchases:** none


## Frequently asked questions

### Is Devv 30 free?

Devv 30 is free to download, with in-app purchases available.

### Is Ohm Law free?

Ohm Law costs $1.99, with no in-app purchases.

### Do Devv 30 or Ohm Law have ads?

Devv 30 shows ads; Ohm Law does not.

### Which is updated more often, Devv 30 or Ohm Law?

Devv 30 ships an update every 8 days, and Ohm Law every 2 months. Most recently, Devv 30 was updated on November 4, 2026 and Ohm Law on November 4, 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.*