Comparison

DFirstCoder vs Jetlines

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

Head to head
About

DFirstCoder

This app provides comprehensive vehicle diagnostics and customization for car owners. It offers one-click app features for easy operation, Bluetooth connectivity, and the ability to read/clear trouble codes, perform smog checks, and view live data. It supports a wide range of vehicle models.

Highlights
  • One-click apps for easy operation
  • Comprehensive diagnostic features
  • Bluetooth wireless connectivity
  • Read and clear trouble codes
  • Smog check functionality
  • Live data display
  • Supports VAG, BMW, Mercedes-Benz models
Features
Read full description

DFirstCoder is an equipped with one-click apps feature professional OBDII Scanner App, designed for vehicle users who want to go beyond straightforward diagnostics. It includes comprehensive diagnostic features and customize numerous features of your vehicles with one-click, friendly to use even for beginners. Features: 1.2 in 1 OBDII coder. In addition to comprehensive diagnostic, one-click apps eliminate the need for tedious operation steps, making them easy to understand and operate, even for beginners. 2.Hot update. Updating the features or fixing bugs immediately without needing to update the app, it can respond to users needs and resolve functionality issue quickly. 3.Bluetooth connectivity, DFirstCoder's device supports wireless connection to your phone or tablet , and communicate with your vehicles rapidly. 4.Read & Clear codes, read the trouble codes of your vehicle and clear it. 5.Smog check. 6.MIL status. 7.Live data. 8.Freeze frame. 9.Mode 6 10.Covering a wide range of models, VAG Group, BMW Group, Mercedes-Benz, etc. are available. About DFirstCoder Information ———————————————————————————————————————————————————————————————————————————————————— DFirstCoder is an app to adapt DFirst device, owner of Shenzhen QIXIN Technology Co., LTD. It’s equipped with one-click apps and comprehensive diagnostic features. The app is free to download for user, and some of functions are free to use (e.g. clear temporary trouble codes,date-time synchronization and host reboot etc.). For more details, welcome to follow us, Website:www.dfirstcoder.com Facebook:https://www.facebook.com/qixinglobal Email: support@dfirstcoder.com Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Jetlines

Features
Read full description

Cargo Shipping from China: A High-Demand Business Solution Demand for Chinese products continues to surge globally. These goods have long shed associations with inferior quality. Conversely, "Made in China" industrial products now rival or surpass Western equivalents in both functionality and aesthetic design – with one distinct advantage: **competitive pricing**. Leveraging cost-efficient labor resources, Chinese manufacturing maintains low production costs, enabling suppliers to profit with minimal markups while delivering globally attractive price points.

Screenshots

DFirstCoder3 screens
Jetlines3 screens

Verdict

The call

The clearest difference is in-app purchases: Jetlines at none against DFirstCoder's 8. On price, update cadence, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. DFirstCoder sells 8 in-app purchases, starting at $108.99 per year. Jetlines asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 6, 2026 and September 18, 2026 respectively.

Scorecard1 real difference · 9 level
DFirstCoder versus Jetlines: the parameters behind the verdict, then further details
ParameterDFirstCoderJetlines
PriceFreeFree
Rating4.8 (5 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings5 — better—
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.0 — better14.0.0
Further details — not scored
Size94 MB40 MB
Age rating17+4+
DeveloperShenzhen QiXin Technology Co., Ltd.帆 孟

In-app purchases

8 purchases

DFirstCoder

Subscriptions2
  • Pro Plan Subscription$108.991 Year
  • Pro Plan Subscription (Family)$158.991 Year
One-time6
  • 350 QD$4.99
  • 700 QD$9.95
  • 1400 QD$19.49
Show 3 more
  • 3500 QD$49.99
  • 7000 QD$96.99
  • 10500 QD$145.99
None

Jetlines

No in-app purchases

Questions

Is DFirstCoder free?
DFirstCoder is free to download, with in-app purchases available.
Is Jetlines free?
Jetlines is free to download, with no in-app purchases.
Do DFirstCoder or Jetlines have ads?
Neither DFirstCoder nor Jetlines shows ads.
Which is updated more often, DFirstCoder or Jetlines?
DFirstCoder ships an update every 3 weeks, and Jetlines every 3 weeks. Most recently, DFirstCoder was updated on September 6, 2026 and Jetlines on September 18, 2026.

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