u/kshirinkin

I'm a solo dev and a longtime Forza player, and I built a free telemetry HUD for the Horizon 6, as I accidentally saw it can send all the data to any server or app. The thing I actually wanted it for: see a bit nicer than the default one live telemery HUD, plus it draws your racing line on the map and colors it by time gained/lost vs your best lap, so you can see the exact corner where you're losing time instead of guessing, with full list of in-game 80 tracks/races, a bit like in F1 live timing (I am a big F1 fan also...)

It's 100% free - no account, no ads, no in-app purchases, no subscription, no paywall - the whole app, every feature. Your telemetry never leaves your Wi-Fi and your race log lives only on the device.

First, the important part (re: the exploits / third-party-software rule): it does NOT touch the game. It only reads Forza's own built-in "Data Out" telemetry broadcast - that's an official in-game setting (Settings > HUD and Gameplay > Data Out). It's read-only, installs no mod, touches no game files, needs no cables / PC bridge / jailbreak, and it physically can't affect single-player or online. You point the game's telemetry at your phone's IP and the app just listens. I personally use it with my xBox Series X FH6.

What it does:

- Draws your route on the map from your world position and colors it by speed or by time gained/lost vs your best lap, so you can literally see the corner where you're bleeding time.

- Live HUD: a 270° neon tach with a shift-light bar, big gear/speed readouts, throttle/brake/clutch/steering bars, a friction-circle G-force ball with a grip trail, and a best-lap delta bar.

- Logs every lap (sector + corner splits, top speed, finished vs bailed), and it's car-aware - the same track in a different car keeps its own personal bests.

- Replay any lap as an animated map replay, or run two attempts as a time-synced ghost race with a timing tower, then export the battle as a 9:16 clip.

- An oscilloscope that plots throttle/brake/RPM/speed/steering/slip together, plus per-corner tire temps, slip ratio/angle and suspension travel for the tuning nerds.

All 80 official races ship pre-loaded with their real routes already drawn on the world map; drive an event and your attempts auto-attach to the right track. Improvise and it logs as a custom track.

The live HUD, input traces and G-force work (theoretically) on any Horizon that broadcasts Data Out, but I only used it and tested it with FH6. The 80-race map + catalog are tuned for FH6.

This is an unofficial, fan-made tool, not affiliated with or endorsed by Microsoft, Turn 10 Studios or Playground Games. I only mention "Forza Horizon" to describe what it's compatible with.

Genuinely after feedback on what's missing or what you'd want next.

(I've kept the App Store link out of the post itself, it's in my first comment, along with the site that has more screenshots + the Data Out setup walkthrough.)

We have some real heat this week in Munich (up to 35 degrees), and my Zone 2 runs just not zone-twoeing any more, I just consistently get 15-20 more bpm even if I got even slower - and god forbid I god slower as I will just end up as a piece of bacon on the road.