R$0.9 per km, red light: a Brazilian driver tool that checks the math before you accept a ride, now #3 in its category

JetMAX is a floating overlay for Brazilian Uber, 99, and inDrive drivers. When a ride request appears, it works out how much that ride earns per km and per hour, shows a red, yellow, or green light, warns you about dangerous neighborhoods ahead, and quietly records the inside of your car. No ad spend has been spotted, and no one has covered it in the press. About 7 months after launch it has 163k installs and sits near #10 in Brazil's automotive Top Grossing chart. It isn't a new category. It's a lighter alternative to a platform-squeezed market leader. The playbook is worth copying, and since Brazil is already crowded, there's still room in other countries.

A ride at R$0.90/km

JetMAX's homepage shows three ride-request cards, which is the job it's doing for drivers. Same kind of ride: R$2.70/km, R$52.11/hour, green light. R$1.77/km, R$29/hour, yellow light. R$0.90/km, R$15.20/hour, red light, with the line "Prejuízo à vista. Pule e preserve seu veículo" (a loss right away: skip it and save your car) (jetmax.app, 11-06).

Brazilian ride-hail drivers have only a few seconds to decide on a ride. The platform shows the fare, distance, and time, but doesn't tell you whether the ride is worth it given your own fuel costs and income goals. JetMAX uses Android's accessibility permission to read the ride-request card from Uber, 99, and others, does the math on the spot, and places the light right on top of the ride-hailing app.

The October 31 changelog is specific: fixed the "light interrupted on entry-level phones" bug, added pickup distance and time alerts, added labels for short, long, slow, and fast rides, and made "São Paulo traffic restriction: more accurate alerts" (Google Play Brazil page, 11-06). Its users are people driving an entry-level Android phone around São Paulo.

What it is and what it sells

The Brazilian store name is JetMAX - Copiloto inteligente (smart co-pilot). The listing describes three pillars:

• Earnings traffic light: reads each ride request, calculates R$/km and R$/hour, and shows a light against your target.
• Danger zone alerts: "8,000 marked zones". Before you enter a zone, it gives a sound and visual warning with a direction arrow and distance. Once inside, it points to the nearest exit without you opening the app.
• Hidden recording: silent background video that runs alongside your ride-hailing app. The listing says: "the only one with cloud backup, unlike competitors that only keep it on your phone."

It also promises "thermal optimization": "forget competitors that make your phone overheat or freeze." These lines all target the same rival, as discussed below.

It's sold as the JetMAX Pro subscription, with a 7-day free trial and monthly, annual, and "lifetime" plans. The US store lists in-app prices from $6.49 to $89.99. On Instagram, a user complained: "I wanted to buy the lifetime plan, and then the price went up by 20+ reais." Pricing is still being adjusted.

In late August it expanded to the US, renaming itself "Mileage & Gig Copilot" and changing the listing to auto-log mileage and calculate deductions at the IRS rate of $0.76 per mile. As of 11-06, the US only moves between #127 and #175 on the free automotive chart and hasn't entered the Top Grossing chart (Google Play automotive charts by country, 10-29 to 11-06). Almost all of its money still comes from Brazil.

Metric

The store page lists the release date as 2026-08-27, but that's wrong: the earliest review is from Apr 11, the official Instagram was promoting it by Apr 20, and a developer reply dated Apr 26 still says "just shipped the feature you asked for." 8-27 is most likely the date it was reset when they renamed it and expanded to the US store. So it's 7 months, 160k installs, not 2 months. Since launch, that averages about 780 a day, and lately it's 600, so it isn't accelerating.

The bar for Brazil's automotive Top Grossing chart isn't high. The #10 spot probably means a few thousand to $10–20k a month (estimate, not verified). It's a real business, but the market is small.

The category was created by others

The founder of Brazil's "driver earnings math" category is GigU (formerly StopClub, founded 2017). It pioneered the traffic-light and hidden-recording format. It now has 2.8M installs and is #1 on Brazil's automotive Top Grossing chart. In March 2024, O Globo reported it had 250k users, 15k paying, and R$7.90 a month. In August 2025, it said its annualized revenue passed $2M (55 content). Its tagline is "Seu copiloto inteligente" (your smart co-pilot). JetMAX's store name is also "Copiloto inteligente".

GigU is famous largely because of Uber. Uber sued it in Brazil and technically restricted this kind of screen-reading tool. GigU responded by filing an antitrust complaint against Uber with CADE, and Exame, O Globo, Época Negócios, and CNBC Times Brasil covered the fight from 2024 through 2026. The result was two things at once: every driver in Brazil learned that this kind of app exists, and the leader became less stable.

JetMAX grew into that gap. Almost all of its pitch speaks to GigU's users: yours overheats, mine doesn't; yours saves recordings only on the phone, mine uploads to the cloud; you have that, and I also add danger-zone alerts (in Brazil, driver personal safety is a real need).

Where users come from

Almost no paid promotion is visible from outside. No public ad records for it turned up on Google or Meta (searching "jetmax" on Meta returns ads for an electric scooter of the same name). Its YouTube channel has 69 subscribers, and its main video has 2 thousand views. Its Instagram videos get a few dozen likes, and its TikTok has 2 followers. There are no creator partnerships and no press coverage, and nobody has mentioned it on X in nearly 90 days. Together, none of this explains 160k installs.

Where do the installs come from? The likely sources are three (all inferred):

1. Store search rides category demand. The GigU–Uber fight turned demand into news. Drivers search Play for "copiloto" or "calculadora de ganhos", and JetMAX's name matches. Its #31–47 free chart ranking also brings some chart traffic.
2. Ratings and replies drive conversion. 4.9 stars looks strong for the category. One driver named Eduardo wrote: "Every card pops up fast and accurate, the price is fair, and everyone can afford it," and suggested viewing past rides from the floating button. The developer replied: "We just released an update with that feature, take a look 😉" (the reply is from Apr 26, and the review was edited again in June). In July, a Motorola user said the app wouldn't open. Two days later, the developer replied asking him to contact the "Motorola specialist" through the "24-hour support" option.
3. Drivers pass it along. Reviews tag other drivers, and driver WhatsApp groups can't be seen from outside.

The negative reviews also show the risk. In September, one user wrote that after installing, they were asked to grant "full permissions to the whole phone." The phone began restarting on its own, uninstalling didn't help, and they had to reflash it: "lucky I only paid for one month." Screen-reading tools ask for very broad permissions, and a single reputation incident can cause a lot of trouble.

Who it's competing with

(Google Play, 11-06; GigU's figures are in the reporting above)

The US market is more crowded: Gridwise, Mystro, MileIQ, Driversnote, and Everlance, with installs ranging from 230k to 4.77M, and they've been around for seven or eight years. JetMAX's US version competes on mileage + ride filtering + recording, and so far it isn't working.

So in Brazil, JetMAX is #3. Rota Pro, which launched two and a half months later, is catching up. Open-source versions already exist. The technical barrier is essentially zero, and the only moat left is reputation and execution.

If it were you

Grade B: worth trying, the opportunity is there, but Brazil is already crowded, and platform risk hangs overhead. JetMAX shows that in a category already validated by a leader, where that leader is also squeezed by platforms, a small team with no ad spend can build a lighter alternative that reaches #3 in its category within 7 months and earns real subscription revenue every month. But if you copy it in Brazil again, you're the eighth.

Who it suits: developers who can build for Android and understand accessibility services and floating overlays; people who speak Spanish or Indonesian and understand local drivers; people who can live with small, steady subscription income.

Who it doesn't suit: anyone who only wants to build for iPhone (iOS doesn't let apps read other apps' screens, so this format doesn't work there); anyone who wants a large market; anyone who can't afford for their app to be removed overnight by a platform or Google Play policy.

How to do it: Don't compete in Brazil. Bring the same idea to places where Android dominates, Uber, DiDi, and inDrive compete for drivers, and drivers worry about safety: Mexico, Colombia, Peru, Chile, or Indonesia (Grab, Gojek). The first version should do three things: screen-reading lights, targets set in the local currency and fuel prices, and danger-zone alerts (using local public crime data). Anyone can do the math, but danger zones and recording are where you can stand out (inferred). Use JetMAX's pitch: no overheating, no freezing, recordings in the cloud. Offer a 7-day trial and a monthly subscription, priced at about the cost of a local meal.

How to get users: Use the exact terms local drivers search for in your store name and keywords (Spanish terms like "calculadora de ganancias" or "copiloto"). Get into driver WhatsApp and Facebook groups, and TikTok driver creators. Reply to every review. This worked for JetMAX.

Timing: GigU is already expanding (the US and Canada), and followers like Rota Pro emerge about every six months. If you want to enter the Spanish-speaking Latin American market, claim the store search terms before the first half of 2027.

Signs you've misjudged it: the leading platform in your target country adds its own per-km earnings display and target prompts for drivers; Google Play tightens review of accessibility permissions, and apps like this start being removed in bulk; or after three months of launch you still can't get into the top 50 of the local automotive Top Grossing chart, which would suggest drivers there won't pay for this.