Comparison

Tune Delivery Network (TDN) vs 85Blends

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Tune Delivery Network (TDN)

This application allows users to receive custom vehicle tunes from their tuner via a compatible TDN delivery device. It facilitates the transfer of performance tuning files directly to your vehicle's tuner. A specific TDN-compatible hardware device is necessary to use this service.

Highlights
  • Receive custom vehicle tunes
  • Works with TDN devices
  • Direct tune delivery
  • Requires compatible hardware
Features
Read full description

The Tune Delivery Network app enables your TDN tuner to send you their tunes for your vehicle. An HP Tuners RTD+, MPVI3, MPVI2+, or other TDN-compatible delivery device is required. Please note that this app is designed for users who have a relationship with a tuner that is part of the TDN system, and is not intended as a solution for self-tuners or non-TDN tuners.

About

85Blends

Features
Read full description

85Blends — Your E85 & Flex-Fuel Companion Whether you’re running a flex-fuel setup, mixing ethanol blends yourself, or just looking for your next E85 fill-up, 85Blends gives you the tools you need in one place. CALCULATE YOUR BLEND Quickly calculate how much E85 and gasoline to add to reach your target ethanol content. Enter your current fuel level, current ethanol percentage, target blend, and tank size — 85Blends handles the math. Use At The Pump for quick calculations while filling up, including partial fills and gas-only adjustments. FIND E85 NEARBY Discover nearby E85 stations using your location, browse station details, save favorites, get directions, and share stations with other drivers. Recent nearby stations can appear immediately when you reopen the app while fresh station data updates in the background. Community Pricing lets drivers submit and share current E85 prices to help keep station information useful for everyone. KEEP TRACK OF YOUR CAR Add your vehicle to Garage and keep important fuel and maintenance information organized. Track: • Fuel fill-ups and ethanol blends • Mileage and fuel history • Maintenance reminders • Vehicle fuel and tank information Cloud Sync helps keep supported app data available across your Apple devices and is included for both Free and Pro users. 85BLENDS PRO Upgrade to Pro for additional tools built for drivers who use E85 regularly: • Intelligent E85 Trip Planner • Interactive Stations map • Map or Classic Stations layouts • Unlimited Garage vehicles • Ad-free experience Trip Planner helps you plan longer drives around available E85 stations, estimate fuel stops, and open your preferred navigation app when you’re ready to drive. BUILT FOR E85 DRIVERS 85Blends is designed to make ethanol blending and E85 station discovery simpler without requiring an account. Whether you’re filling with straight E85, mixing an E30/E50/E70 blend, or keeping track of a flex-fuel vehicle, the tools you need are always close by. Location access is optional and used for nearby station features. Automatic Pump Detection is also optional and can be enabled separately. Support: support@85blends.app Privacy Policy: https://85blends.app/privacy.html 85Blends Pro is an optional auto-renewable subscription. Subscription features and availability may change as the app continues to improve.

Screenshots

Tune Delivery Network (TDN)4 screens
85Blends4 screens

Verdict

The call

The clearest difference is in-app purchases: Tune Delivery Network (TDN) at none against 85Blends's 1. Tune Delivery Network (TDN) also leads on ads (none vs shown) and device support (3 vs 1). On price and update cadence 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. 85Blends sells 1 in-app purchase, starting at $3.99 per month. Tune Delivery Network (TDN) asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

Scorecard4 real differences · 6 level
Tune Delivery Network (TDN) versus 85Blends: the parameters behind the verdict, then further details
ParameterTune Delivery Network (TDN)85Blends
PriceFreeFree
Rating2.5 (37 ratings) — better—
Positive reviews14.5% of reviews—
Number of ratings37 — better—
Update frequencyFortnightlyFortnightly
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.1 — better17.6
Further details — not scored
Size61 MB24 MB
Age rating4+4+
DeveloperHP Tuners LLCJulian Figueroa

Bugs and requests

Tune Delivery Network (TDN)

Reported bugs

4 issues
  • App crashes when trying to read/clear codes or connect to device
  • Fails to load tunes or read vehicle data
  • Bluetooth connectivity issues prevent basic functions
  • Sync and file transfer problems

Requested features

3 requests
  • Allow uploading tunes from tuner for personal use
  • Add basic tuning functions like KAM reset and crank relearn
  • Improve data log viewing and management capabilities

85Blends

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Tune Delivery Network (TDN)

No in-app purchases

1 purchases

85Blends

Subscriptions1
  • 85Blends Pro$3.991 Month

Questions

Is Tune Delivery Network (TDN) free?
Tune Delivery Network (TDN) is free to download, with no in-app purchases.
Is 85Blends free?
85Blends is free to download, with in-app purchases available.
Do Tune Delivery Network (TDN) or 85Blends have ads?
85Blends shows ads; Tune Delivery Network (TDN) does not.
Which is updated more often, Tune Delivery Network (TDN) or 85Blends?
Tune Delivery Network (TDN) ships an update fortnightly, and 85Blends fortnightly. Most recently, Tune Delivery Network (TDN) was updated on October 30, 2026 and 85Blends on October 28, 2026.

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