# Electric Mods vs Constraint Engine

The clearest difference is update cadence: Constraint Engine at daily against Electric Mods's every 6 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Electric Mods sells 11 in-app purchases, starting at $1.99 per month and Constraint Engine sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Electric Mods ships an update every 6 weeks, Constraint Engine daily. The most recent releases landed on October 16, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Electric Mods | Constraint Engine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (217 ratings)](https://appshunter.io/ios/app/electric-modsev-customizer/id1596918787/reviews)** | — |
| Number of ratings | **217** | — |
| Positive reviews | 71.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 757 MB | 10 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Electric Mods Llc](https://appshunter.io/developer/1585300201) | [Mark Barker](https://appshunter.io/developer/1896741919) |

## What reviewers say

### Electric Mods

[App page](https://appshunter.io/ios/app/electric-modsev-customizer/id1596918787)

Visualize your dream EV build in stunning 3D before making any physical modifications. Experiment with various wraps, finishes, and wheels to perfect your vehicle's look. Connect with professional shops to bring your customized design to life.

**Highlights:** 3D wrap and mod visualization, Experiment with wraps, colors, and finishes, Swap and customize wheels, Preview in multiple lighting conditions, Save and compare designs, Browse real user designs, Send designs to shops for quotes

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Access Pass | $1.99 | per month |
| Premium Yearly Personal Use | $9.99 | per year |
| Premium Monthly Business Use | $14.99 | per month |
| Premium Yearly Business Use | $149.00 | per year |
| Premium Yearly Business Use | $149.99 | per year |
| Premium Layouts | Free | one-time |
| Premium Finishes | Free | one-time |
| Electric Mods NoAds | $3.99 | one-time |
| Electric Mods Plus | $3.99 | one-time |
| 72 Hour Session | $3.99 | one-time |
| Lifetime Personal Access | $24.99 | one-time |

**What reviewers like**

- 🎨 Fun and intuitive car customization interface
- 🚗 Wide variety of EV models to customize
- 👁️ Realistic preview of modifications before purchase
- 🛠️ Real-life parts and pricing information
- ⚡ Engaging and addictive gameplay experience

**What reviewers complain about**

- 💰 Aggressive monetization and paywall strategy
- 🎭 Deceptive pricing (shows 'free' then charges)
- 🐛 Frequent app crashes during save/publish
- ⏱️ Long loading times and performance issues
- 🔐 Forced account creation requirement

**Reported bugs**

- App crashes when saving or publishing designs
- App crashes when taking screenshots
- Authentication token errors preventing saves
- Login issues on iPad
- Username removal after login

**Requested features**

- Driving/racing simulator mode
- More car models (BMW, Audi, Ford F150, Lucid Air, Tesla Roadster 2.0)
- Additional body modification options
- More wheel and suspension options
- Interior customization features


### Constraint Engine

[App page](https://appshunter.io/ios/app/constraint-engine/id6772520332)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Constraint Engine Pro | $4.99 | per month |
| Constraint Engine Pro | $29.99 | per year |


## Frequently asked questions

### Is Electric Mods free?

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

### Is Constraint Engine free?

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

### Do Electric Mods or Constraint Engine have ads?

Neither Electric Mods nor Constraint Engine shows ads.

### Which is updated more often, Electric Mods or Constraint Engine?

Electric Mods ships an update every 6 weeks, and Constraint Engine daily. Most recently, Electric Mods was updated on October 16, 2026 and Constraint Engine on October 5, 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.*