Simplex vs Car Maintenance, Fuel Log
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Simplex
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Simplexβ’ is a generic tool to support participative observation networks. The Simplexβ’ smart app is one component of a more complete observation system that, in addition to the app, comprises a webGIS interface and a database. The application allows you to do any kind of thematic observation by driving the observers step by step, through explicit icons, to the right observation item, and to finally declare it (with our without photo) with geographical and spatial stamp. Observers have access at any time and any location to environmental data for the last three days that are extracted on-demand from environmental databases. At each observation are attached selected environmental parameters that allows, at any time, to correlate some observations with environmental context. Simplexβ’ can host several observation networks, either of public type (i.e. open to anyone) or of private type. You can contract a license for a private one to create your own network. The license covers the configuration of the observation campaign (i.e. the selection and the hierarchy of icons and the required environmental parameters, if of interest to you). It also covers an access to a private webGIS that provides a synoptic view of the observation done by your network. Your data is kept safely on a private storage without any access by a third-party. Once created you can invite anyone you want to become an observer to your network. You can also easily change and adapt the icons at all time. The app allows on-line discussion (text) between network organizer and observers. Simplexβ’ app is available in several languages (Arabic, English, French, German, Italian, Norwegian and Spanish). Want to create your own network or need for more information? Please contact simplex@acri.fr
Car Maintenance, Fuel Log
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Every car document, every fill-up, every service β finally in one place. Car Control is the simple way to organize your vehicle paperwork and track how your car is really doing. Scan your documents, log your data, and keep your whole garage in your pocket. No clutter, no glovebox digging, no lost receipts. β KEEP EVERY DOCUMENT IN ONE PLACE β Stop hunting for that insurance card or registration when you need it most. Capture each document with your camera and Car Control reads the details for you: β’ INSURANCE β Store policy documents for every vehicle β’ REGISTRATION & CERTIFICATION β Keep proof of registration handy β’ DRIVER LICENSE β Save front and back, ready when asked β’ SERVICE RECORDS β Build a full maintenance history over time Smart camera scanning with text recognition pulls key details straight off the page, so you spend seconds, not minutes. β TRACK YOUR CAR'S DATA β Log the numbers that matter and watch the trends: β’ Mileage / odometer readings β’ Fuel level and refills (with cost) β’ Battery level for EVs and hybrids β’ Refill amounts and spending over time Car Control turns your entries into clear charts β by day, week, or month β and calculates your average fuel and electricity consumption automatically. See if your car is getting thirstier, plan your budget, and catch problems early. β MANAGE YOUR WHOLE GARAGE β β’ Add multiple vehicles with photos β’ Switch between cars in a tap β’ Store each car's documents and data separately β’ Share vehicle info when you need to β BUILT FOR REAL OWNERS β Whether you drive one car or run a small fleet, Car Control keeps everything tidy: β’ Daily drivers who hate paperwork β’ Families with several vehicles β’ EV and hybrid owners watching consumption β’ Anyone who wants service history at their fingertips β YOUR DATA STAYS WITH YOU β Your records live on your device. Documents and logs are yours β organized, private, and always within reach. β PREMIUM UNLOCKS β Premium unlocks the full document suite β insurance, registration, driver license, and service records with camera scanning β plus everything you need to manage your garage without limits. Choose weekly, yearly, or a one-time lifetime purchase. Subscriptions auto-renew until cancelled. Manage or cancel anytime in App Store > Account > Subscriptions. β LEGAL β Terms of Use: https://leanstudio.asia/terms-of-use Privacy Policy: https://leanstudio.asia/privacy-policy β SUPPORT β Questions, feedback, or a feature you'd love? Email support@leanstudio.asia. We read every message and ship updates based on what real drivers ask for. Download Car Control and keep your car β and its paperwork β running smoothly.
Screenshots
Verdict
The clearest difference is in-app purchases: Simplex at none against Car Maintenance, Fuel Log's 3. Simplex also leads on iOS requirement (9.0 vs 16.0). On price, update cadence, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Car Maintenance, Fuel Log sells 3 in-app purchases, starting at $19.99 per year. Simplex asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 4 months. Both last shipped on October 11, 2026.
| Parameter | Simplex | Car Maintenance, Fuel Log |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | Every 4 months |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPod β better | iPhone |
| Requires iOS | 9.0 β better | 16.0 |
| Further details β not scored | ||
| Size | 34 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | ACRI | LEAN ASIA CO., LTD |
In-app purchases
Simplex
No in-app purchases
Car Maintenance, Fuel Log
- Premium Yearly$19.991 Year
- Premium Monthly$19.991 Month
- Lifetime$39.99
Questions
Is Simplex free?
Is Car Maintenance, Fuel Log free?
Do Simplex or Car Maintenance, Fuel Log have ads?
Which is updated more often, Simplex or Car Maintenance, Fuel Log?
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