# e85Cal vs Carman Wheel Simulator

The clearest difference is review sentiment: e85Cal at 83% against Carman Wheel Simulator's 0%. e85Cal also leads on rating (4.7 vs 3.9) and in-app purchases (none vs 11). Carman Wheel Simulator's advantage is update cadence (monthly vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Carman Wheel Simulator sells 9 one-off in-app purchases. e85Cal asks for nothing beyond the download.

e85Cal holds the better App Store score, 4.7 against 3.9. Both are backed by a comparable volume of ratings — 37 and 9 respectively. Written reviews point the same way: 83% of e85Cal's written reviews are positive against 0% of Carman Wheel Simulator's.

e85Cal ships an update every 4 months, Carman Wheel Simulator monthly. Both last shipped on October 24, 2026.

## The numbers

| Metric | e85Cal | Carman Wheel Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (37 ratings)](https://appshunter.io/ios/app/e85cal/id1470313135/reviews)** | [3.9 (9 ratings)](https://appshunter.io/ios/app/carman-wheel-simulator/id6476076430/reviews) |
| Number of ratings | **37** | 9 |
| Positive reviews | **83.3% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 15 MB | 41 MB |
| Requires iOS | **12.1** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Michael Joe](https://appshunter.io/developer/1132486512) | [Guangzhou kafen Technology Co., Ltd.](https://appshunter.io/developer/1725745235) |

## What reviewers say

### e85Cal

[App page](https://appshunter.io/ios/app/e85cal/id1470313135)

This app assists users in calculating the precise amounts of standard and ethanol gasoline needed to achieve a desired ethanol percentage in their fuel mix. It simplifies the process by taking into account tank size, current fuel level, and the ethanol content of available fuel types.

**Highlights:** Calculate ethanol percentage goal, Enter gas tank size, Input standard pump gas ethanol %, Input ethanol pump gas ethanol %, Set target ethanol % mix, Enter current fuel level %

**Features:** macOS Compatibility

**In-app purchases:** none


### Carman Wheel Simulator

[App page](https://appshunter.io/ios/app/carman-wheel-simulator/id6476076430)

Visualize and preview car wheel and caliper modifications with realistic effects. Adjust settings like brightness and contrast for an authentic look before making changes to your vehicle.

**Highlights:** Real-time wheel modification preview, Over 400 wheel options from 20+ brands, Caliper modification preview, Adjustable wheel settings (brightness, contrast, color temperature), Realistic visual effects, Simple operation

**Features:** macOS Compatibility

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| key | $0.29 | one-time |
| 钥匙 | $0.49 | one-time |
| Newcomer Pack | $0.89 | one-time |
| Primary Pack | $4.49 | one-time |
| Intermediate Pack | $7.89 | one-time |
| Advanced Pack | $10.49 | one-time |
| Upgrade to PRO | $11.00 | one-time |
| VIP | $18.49 | one-time |
| PRO | $29.90 | one-time |


## Frequently asked questions

### Is e85Cal free?

e85Cal is free to download, with no in-app purchases.

### Is Carman Wheel Simulator free?

Carman Wheel Simulator is free to download, with in-app purchases available.

### Which has better reviews, e85Cal or Carman Wheel Simulator?

e85Cal is rated higher. e85Cal averages 4.7 out of 5 from 37 ratings, while Carman Wheel Simulator averages 3.9 from 9 ratings.

### Do e85Cal or Carman Wheel Simulator have ads?

Neither e85Cal nor Carman Wheel Simulator shows ads.

### Which is updated more often, e85Cal or Carman Wheel Simulator?

e85Cal ships an update every 4 months, and Carman Wheel Simulator monthly. Most recently, e85Cal was updated on October 24, 2026 and Carman Wheel Simulator on October 24, 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.*