# e85Cal vs TunerView

The clearest difference is review sentiment: e85Cal at 83% against TunerView's 40%. e85Cal also leads on rating (4.7 vs 3.1) and in-app purchases (none vs 4). TunerView's advantage is update cadence (every 6 weeks vs every 4 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. TunerView sells 4 one-off in-app purchases. e85Cal asks for nothing beyond the download.

e85Cal holds the better App Store score, 4.7 against 3.1. Both are backed by a comparable volume of ratings — 35 and 40 respectively. Written reviews point the same way: 83% of e85Cal's written reviews are positive against 40% of TunerView's.

e85Cal ships an update every 4 months, TunerView every 6 weeks. The most recent releases landed on September 26, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | e85Cal | TunerView |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (35 ratings)](https://appshunter.io/ios/app/e85cal/id1470313135/reviews)** | [3.1 (40 ratings)](https://appshunter.io/ios/app/tunerview/id1593158185/reviews) |
| Number of ratings | 35 | **40** |
| Positive reviews | **83.3% of reviews** | 40.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 15 MB | 108 MB |
| Requires iOS | **12.1** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Michael Joe](https://appshunter.io/developer/1132486512) | [Peter Linszter](https://appshunter.io/developer/530077583) |

## 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


### TunerView

[App page](https://appshunter.io/ios/app/tunerview/id1593158185)

This app connects to your vehicle's ECU via a Bluetooth adapter to provide real-time data logging and dashboard displays. Unlock specific datalog protocols through in-app purchases to utilize its full functionality for automotive tuning.

**Highlights:** Real-time datalogging, Customizable dashboard, Bluetooth ECU connection, Support for specific ECUs, In-app protocol purchases

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KTuner Protocol | $4.99 | one-time |
| ECUMaster Protocol | $4.99 | one-time |
| eCTune/HTS Protocol | $4.99 | one-time |
| Neptune Protocol | $4.99 | one-time |


## Frequently asked questions

### Is e85Cal free?

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

### Is TunerView free?

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

### Which has better reviews, e85Cal or TunerView?

e85Cal is rated higher. e85Cal averages 4.7 out of 5 from 35 ratings, while TunerView averages 3.1 from 40 ratings.

### Do e85Cal or TunerView have ads?

Neither e85Cal nor TunerView shows ads.

### Which is updated more often, e85Cal or TunerView?

e85Cal ships an update every 4 months, and TunerView every 6 weeks. Most recently, e85Cal was updated on September 26, 2026 and TunerView on October 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*