Tuner Assist vs e85Cal
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tuner Assist
Review EcuTek logs generated with ECU Connect on your iPhone or iPad. Originally for Visconti Tuning customers, it's now available to all EcuTek users.
- Review EcuTek logs
- Compatible with ECU Connect
- Supports iPhone, iPad, iPod
- Available to all EcuTek users
- QR code activation option
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Tuner Assist installs on the iPhone, iPad, or iPod and provides an easy way to review EcuTek logs generated with ECU Connect. Tuner Assist was originally designed to enhance the EcuTek experience for Visconti Tuning customers, but has now opened up to all EcuTek users! Visconti Tuning customers and can activate this app using the desktop version of Tuner Assist or by requesting a QR Code via email.
e85Cal
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.
- 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 %
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e85Cal help you calculate your ethanol percentage goal. It fast, simple, and easy to use. Just enter the following information: 1) How big is your gas tank? 2) What is the ethanol % in the standard pump gas? 3) What is the ethanol % in the ethanol pump gas? 4) What is your target ethanol % mix goal? 5) What is your current ethanol % min in your vehicle? 6) What is your current fuel level % in your vehicle? Results will display how many gallons or liters of standard and ethanol gas to pump in your vehicle based on your input.
Screenshots
Verdict
The clearest difference is review sentiment: e85Cal at 83% against Tuner Assist's 40%. e85Cal also leads on rating (4.7 vs 3.0) and in-app purchases (none vs 2). Tuner Assist's advantage is update cadence (every 2 weeks vs every 4 months) and iOS requirement (8.0 vs 12.1). On price, ads, monetization model and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Tuner Assist sells 2 one-off in-app purchases. e85Cal asks for nothing beyond the download.
e85Cal holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: e85Cal has 37 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 40% of Tuner Assist's written reviews are positive against 83% of e85Cal's.
Tuner Assist ships an update every 2 weeks, e85Cal every 4 months. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.
| Parameter | Tuner Assist | e85Cal |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) | 4.7 (37 ratings) — better |
| Positive reviews | 40.0% of reviews | 83.3% of reviews — better |
| Number of ratings | 2 | 37 — better |
| Update frequency | Every 2 weeks — better | Every 4 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 8.0 — better | 12.1 |
| Further details — not scored | ||
| Size | 8 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | John Visconti | Michael Joe |
Customer experience
Tuner Assist
e85Cal
In-app purchases
Tuner Assist
- Log Preview & Graphing$9.99
- Log Preview & Graphing$19.99
e85Cal
No in-app purchases
