e85Cal vs LayMatic
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
LayMatic
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LayMatic lets you adjust the factory air suspension of compatible Mercedes-Benz vehicles—right from your iPhone. Set the perfect stance for daily driving, photo shoots, or track days, then restore stock height anytime. No permanent wiring or coding: plug in, adjust, unplug. Requires the LayMatic OBD-II dongle (sold separately). What you can do Lower in seconds: Easy Mode adjusts all four corners; Front/Back controls axles; Manual enables per-wheel fine-tuning. Save & restore: Your vehicle’s original values are backed up on first connect so you can return to stock anytime. Multiple vehicles: One Key licenses one car; add additional Keys to enable more cars in your garage. Non-invasive setup: No cutting, no “lowering links,” and no permanent wiring. How it works Create an account and sign in. Plug the LayMatic OBD-II dongle into the OBD port (under the steering wheel on most Mercedes-Benz models). Open the app and connect; on first connection you’ll assign a Key to the vehicle. Adjust height using Easy, Front/Back, or Manual modes. Unplug the dongle when you’re done. Compatibility Works with most Mercedes-Benz models equipped with factory air suspension (e.g., AIRMATIC, Air Body Control). Not compatible with hydraulic systems such as Active Body Control (ABC)/Magic Body Control. For the latest list of supported models, see our compatibility page on the LayMatic website. Safety & legal Use only when parked on a level surface with the parking brake engaged. Do not operate while driving. Ensure any changes comply with your local laws and inspection requirements (e.g., TÜV). Adjustments are reversible, but may affect warranty or assistance; use at your own risk. Requirements LayMatic OBD-II dongle (sold separately) and an active LayMatic account. A compatible Mercedes-Benz vehicle (see compatibility on our website). Bluetooth and internet access for initial setup and updates. Trademarks Mercedes-Benz, AIRMATIC, and related marks are trademarks of their respective owners. LayMatic is an independent product and is not affiliated with or endorsed by Mercedes-Benz.
Screenshots
Verdict
The clearest difference is ads: e85Cal at none against LayMatic's shown. LayMatic's advantage is update cadence (every 4 weeks vs every 4 months). On price, in-app purchases, device support and iOS requirement 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. Neither carries in-app purchases, so what you see is what you pay.
e85Cal ships an update every 4 months, LayMatic every 4 weeks. The most recent releases landed on September 26, 2026 and September 28, 2026 respectively.
| Parameter | e85Cal | LayMatic |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (35 ratings) — better | — |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 35 — better | — |
| Update frequency | Every 4 months | Every 4 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.1 | 12 — better |
| Further details — not scored | ||
| Size | 15 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Michael Joe | Irsadi Soganci |
In-app purchases
e85Cal
No in-app purchases
LayMatic
No in-app purchases









