Fuel vs WetRuler
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fuel
Monitor your vehicle's ethanol concentration and fuel temperature in real-time. This app wirelessly connects to a compatible Bluetooth module, freeing up your device's port for simultaneous charging and monitoring. It includes an ethanol fill-up concentration calculator and customizable display views.
- Real-time ethanol concentration monitoring
- Real-time fuel temperature monitoring
- Wireless Bluetooth connectivity
- Ethanol fill-up concentration calculator
- Fahrenheit or Celsius display options
- Two display views
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***Note that this app requires a custom Bluetooth module to function. Info on the module can be found here: https://fuel-it.com/products/fuel-it-bluetooth-flex-fuel-analyzer The Fuel-It ECA gives you realtime feedback from your Continental Ethanol sensor. Wireless communication frees up your device's port so you can monitor and charge at the same time. Features: Ethanol concentration monitoring Fuel temperature monitoring 2 Display Views Fuel temperature display in Fahrenheit or Celsius Ethanol fill-up concentration calculator
WetRuler
This augmented reality application measures and weighs fish using your device's camera. Simply place your catch on a surface, select the fish type, and the app will estimate its length and approximate weight. It also records a photo of your catch with the measurements displayed.
- AR measurement grid
- Fish type selection
- Approximate weight and length calculation
- Records catch photos with data
- Works in water for catch and release
- Supports large fish up to 10 feet
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WetRuler is an AR app that measures and weighs your fish all without rulers or scales. Select the type of fish that you've caught from a list of common ones caught in Alaska. Place the fish on a horizontal surface and a AR screen grid will appear. Choose the the head to tail length and algorithms will generate length and approximate weight. --most common Alaskan fish included --records weight in pounds and length in inches --you don't have to touch the fish! --able to weigh halibut up to 10 feet in length! --records photo of your catch with weight and length displayed --works well in water for catch and release
Screenshots
Verdict
The clearest difference is rating: WetRuler at 5.0 against Fuel's 3.1. Fuel's advantage is update cadence (every 10 months vs every 43 months) and ratings volume (33 vs 1). On price, ads, in-app purchases and monetization model 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.
WetRuler holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: Fuel has 33 ratings behind it against 1, so its average is the more settled of the two.
Fuel ships an update every 10 months, WetRuler every 43 months. The most recent releases landed on August 27, 2026 and June 20, 2026 respectively.
| Parameter | Fuel | WetRuler |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (33 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 33 — better | 1 |
| Update frequency | Every 10 months — better | Every 43 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.4 — better | 15.5 |
| Further details — not scored | ||
| Size | 20 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Dmac Mobile Developments, LLC | Robert Werner |
Customer experience
Fuel
WetRuler
In-app purchases
Fuel
No in-app purchases
WetRuler
No in-app purchases
