ACC Toolbox vs SimClient
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ACC Toolbox
This app helps sim racers optimize their performance in Assetto Corsa Competizione. It provides fuel estimates based on race parameters and details on ECU maps for strategic advantage. It supports various DLCs and system themes.
- Fuel calculation for race stints
- ECU map details and usage
- Support for multiple DLCs
- System dark/light theme support
- Lap time data integration
- Wheel rotation information
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Made for Assetto Corsa Competizione. Enter a car class, track, and stint length to get a estimate of how much fuel to add to the tank. View details of the different ECU maps in all cars to understand when to use them and gain an advantage in your races. Supported content: - Base game - Intercontinental GT Pack - GT4 Pack - British GT Pack - 2020 GT World Challenge Pack - American Track Pack - 2023 GT World Challenge Pack Supports system dark/light theme. Made with Flutter. Track lap times calculated from the RaceApp database: https://raceapp.eu/LapRecords ECU map information from Aristotelis' post on the Assetto Corsa forum: https://www.assettocorsa.net/forum/index.php?threads/ecu-maps-implementation.54472/ Wheel rotation information from Ross McGregor's post on Traxxion.gg: https://traxion.gg/how-steering-lock-is-key-to-lap-time-in-assetto-corsa-competizione/ And Grant Campbell's post on Coach Dave Academy: https://coachdaveacademy.com/tutorials/correct-steering-locks-and-ratios-in-acc/ Helmet outline icon made by Freepik: https://www.flaticon.com/authors/freepik From: https://www.flaticon.com
SimClient
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Turn your iPhone or iPad into a dedicated dashboard unit (DDU) for use with sim racing and driving games. Built for hands-off reliability, SimClient keeps your display awake, reconnects fast, and lets you switch seamlessly between multiple SimHub* servers — so you spend less time configuring and more time behind the wheel. SimClient connects to your existing SimHub* server and mirrors live dashboards directly on your iOS device. Perfect for: • Budget conscious sim rigs • Cramming one extra info screen into your setup • Repurposing an old iPhone or iPad into a high-res dashboard • Eliminating tapping to keep your screen awake during long sessions Works with SimHub* compatible titles, tested with and including: • Assetto Corsa • Euro Truck Simulator 2 • American Truck Simulator *Requires SimHub installed and running with Dashboard functionality enabled, and both devices connected to the same network.
Screenshots
Verdict
The clearest difference is update cadence: SimClient at every 9 days against ACC Toolbox's every 3 weeks. ACC Toolbox's advantage is iOS requirement (12.0 vs 17.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
ACC Toolbox ships an update every 3 weeks, SimClient every 9 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | ACC Toolbox | SimClient |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 weeks | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 31 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Matthew Morgan | Christopher Verringer |
In-app purchases
ACC Toolbox
No in-app purchases
SimClient
No in-app purchases
Questions
Is ACC Toolbox free?
Is SimClient free?
Do ACC Toolbox or SimClient have ads?
Which is updated more often, ACC Toolbox or SimClient?
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