034SPI vs LYN User
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
034SPI
This app allows users to flash their car's ECU/TCU tunes, configure live data displays, and record data logs for analysis. It also provides diagnostic support tools like reading and clearing DTC codes.
- Flash ECU/TCU tunes
- Configure live data displays
- High-speed data logging
- Upload logs to server
- Read and clear DTCs
- View emissions monitor status
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Designed for use on iPhone/iOS as well as Apple Silicon-equipped laptops (M1, M2, M3), 034SPI allows you to easily flash your car, change fuel maps, configure live data displays, record and submit data logs to 034Motorsport's Tuning Support team, and utilize diagnostic support tools such as DTC/CEL code read/clear and more! Available now for use with any Dynamic+ ECU or TCU tune and the latest Dynamic+ End User Flashing Dongle (May 2023 & Newer)! Full App Features: Complete Any ECU Or TCU Tune flash Quickly Flash Different Fuel Octane Or Transmission Files Flash ECU/TCU Using Mobile Device's Internet Connection Enhanced Flashing Protocol Protections For Increased Flashing Stability User-Configurable Live Data Displays Dozens Of Defined Variables Available Multiple Display Types Available for Live Dt High-Speed Data Logging Of Pre-Defined Variables Easy Upload Of Logs To 034Motorsport Server Data Log Analysis Services Available Free Of Charge Read & Clear DTCs On ECU & TCU View Emissions Monitor Statuses Perform Adaptations/Recalibrations* Throttle Body Adaptation Fuel Tank Drain *Available for limited platforms, coverage expanding regularly
LYN User
Find and hire trusted local home service professionals. Browse provider profiles, request quotes, schedule services, and track your requests from start to finish. Secure in-app payments are available.
- Search local contractors by service type
- Browse provider profiles with reviews
- Request quotes and schedule services
- Track service requests
- Secure in-app payments
- Save favorite providers
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LYN is the app for homeowners who want to find and hire trusted local home service professionals in their area. With LYN you can: Search for contractors by service type near you Browse provider profiles with photos, reviews, and ratings Request quotes and schedule services directly Track your service requests from start to finish Pay securely through the app Save your favorite providers for future jobs LYN connects homeowners with verified local contractors for any home service need — from plumbing and electrical to landscaping and cleaning.
Screenshots
Verdict
The clearest difference is rating: LYN User at 5.0 against 034SPI's 4.2. 034SPI's advantage is ratings volume (43 vs 2). On price, update cadence, ads and in-app purchases 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.
LYN User holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: 034SPI has 43 ratings behind it against 2, so its average is the more settled of the two.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 30, 2026 and October 16, 2026 respectively.
| Parameter | 034SPI | LYN User |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (43 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 55.0% of reviews | — |
| Number of ratings | 43 — better | 2 |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 126 MB | 93 MB |
| Age rating | 4+ | 17+ |
| Developer | 034Motorsport | Love Your Neighbor Inc. |
Customer experience
034SPI
LYN User
In-app purchases
034SPI
No in-app purchases
LYN User
No in-app purchases
