TDI Tuning vs 997 Chrono
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TDI Tuning
Enhance your vehicle's power, torque, and economy directly from your driver's seat. This app connects to your TDI-Tuning Bluetooth system, allowing instant performance adjustments and access to a community of car enthusiasts for tips and support.
- Bluetooth system connection
- Instant performance setting changes
- Seven custom performance programs
- Engine delay timer
- Discreet mode
- Revert to factory settings
- Community access
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Want more power, torque or economy from your vehicle? With the TDI Tuning App, you can decide directly from your driver’s seat. Connect to your TDI-Tuning Bluetooth system to instantly change the performance of your engine and adapt your vehicle to suit any situation. Join a community of like-minded tuners, show-off your vehicle, and get tips from a world-wide network of car enthusiasts. Functionality: - Connect to your CRTD4 Bluetooth or CRTD4 SENT Bluetooth enabled system. - Instantly change the performance setting of your vehicle from one of seven custom programs specifically designed for your exact vehicle. - Set your engine delay timer to activate your system after a pre-determined amount of time. - Discreet mode- turn off all illumination on your tuning system. - Turn off your tuning system and revert back to vehicle factory standard. - Connect with our TDI-Tuning Community. - Instantly access our support and FAQ pages.
997 Chrono
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Control and update your 997 Chrono display from the comfort of your iPhone. Designed to Fit Porsche 911 (997), Boxster and Cayman (987) vehicles. The 997 Chrono is designed to replace the Sports Chrono stop watch in the Porsche 911 (997 model, 2005 to 2012) and the Boxster and Cayman (987 model, 2005 to 2012). Once fitted, the display can show you: * Water temperature * Oil temperature * Oil pressure * Battery voltage * Boost pressure (turbo models) * Speed * RPM * Current gear (tiptronic and PDK) Use this app to update the settings, upload new images for the clock faces or splash screen and update new firmware, without the need to remove the unit to access the USB socket or the SD card.
Screenshots
Verdict
The clearest difference is update cadence: 997 Chrono at every 3 weeks against TDI Tuning's every 3 months. 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.
TDI Tuning ships an update every 3 months, 997 Chrono every 3 weeks. The most recent releases landed on October 5, 2026 and October 31, 2026 respectively.
| Parameter | TDI Tuning | 997 Chrono |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (5 ratings) — better | — |
| Positive reviews | 38.9% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 23 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | TDI Tuning | ia2o ltd |
In-app purchases
TDI Tuning
No in-app purchases
997 Chrono
No in-app purchases









