# Processing & p5.js iCompiler vs TelCar

The clearest difference is in-app purchases: TelCar at none against Processing & p5.js iCompiler's 5. TelCar also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (13.2 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Processing & p5.js iCompiler sells 5 in-app purchases, starting at $3.49 per month. TelCar asks for nothing beyond the download.

Processing & p5.js iCompiler ships an update every 2 months, TelCar every 3 weeks. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Processing & p5.js iCompiler | TelCar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (84 ratings)](https://appshunter.io/ios/app/processing-and-p5js-icompiler/id648955851/reviews)** | — |
| Number of ratings | **84** | — |
| Positive reviews | 58.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Freemium | — |
| Size | 10 MB | 10 MB |
| Requires iOS | 15.0 | **13.2** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | +4 |
| Developer | [riedel.wtf apps S.L.](https://appshunter.io/developer/517545753) | [Aleksey Erko](https://appshunter.io/developer/1500542811) |

## What reviewers say

### Processing & p5.js iCompiler

[App page](https://appshunter.io/ios/app/processing-and-p5js-icompiler/id648955851)

Develop and compile Processing and p5.js code directly on your mobile device. Export your creations as standalone apps for offline use. Ideal for students and educators learning creative coding.

**Highlights:** Compose and compile code on mobile, Export projects as home screen apps, Offline app usage, Code highlighting and formatting, 3D sketches and games support, Error highlighting (Pro feature)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Processing Pro (Monthly) | $3.49 | per month |
| Processing Pro (Annual) | $9.99 | per year |
| Processing for iOS Tip | $4.99 | one-time |
| Processing Pro Lifetime Unlock | $25.99 | one-time |
| Processing for iOS Tip | $99.99 | one-time |

**What reviewers like**

- ✅ Works offline without internet connection
- 👍 Free app with no mandatory payment
- 🎨 Good for quick creative coding and sketches
- 📱 Portable Processing development on mobile
- ⚡ Relatively fast performance for mobile IDE

**What reviewers complain about**

- 🚫 Compiler errors hidden behind paywall
- 🐛 Data loss and code deletion issues
- ❌ No error messages or debugging output
- 📝 Poor syntax highlighting (highlights wrong keywords)
- ⌨️ No auto-indentation or code formatting

**Reported bugs**

- Code reverts to earlier versions after app sleep
- Changes lost when phone falls asleep
- Functions with parameters cause black screen
- StringList data type not recognized
- Boolean highlighting shows 'bool' instead of full word

**Requested features**

- Free basic error messages for all users
- Undo/redo functionality
- Project renaming capability
- Project duplication feature
- Robust auto-save and backup system


### TelCar

[App page](https://appshunter.io/ios/app/telcar/id1531509526)

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

**In-app purchases:** none


## Frequently asked questions

### Is Processing & p5.js iCompiler free?

Processing & p5.js iCompiler is free to download, with in-app purchases available.

### Is TelCar free?

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

### Do Processing & p5.js iCompiler or TelCar have ads?

Neither Processing & p5.js iCompiler nor TelCar shows ads.

### Which is updated more often, Processing & p5.js iCompiler or TelCar?

Processing & p5.js iCompiler ships an update every 2 months, and TelCar every 3 weeks. Most recently, Processing & p5.js iCompiler was updated on October 29, 2026 and TelCar on October 27, 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.*