Comparison

Unagi vs DAVE, Diagnostic Assistant

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

Head to head
About

Unagi

Enhance your electric scooter rides by configuring ride modes and monitoring battery status. Secure your scooter with app-based locking and manage your rental account details, including payments and service scheduling.

Highlights
  • Configure ride modes
  • Monitor battery status
  • Lock and unlock scooter
  • Manage All-Access account
  • View account details
  • Schedule service
Features
Read full description

Control and enhance your experience riding the Unagi Model One Voyager scooter. - Configure your ride Get at-a-glance information about the state of your scooter, control the scooter's ride mode, glance at your scooter's most recent battery charge level, and more! - Keep your scooter secure Lock and unlock your scooter through the app to keep others from riding away on it! We recommend pairing app lock with a physical lock when leaving the scooter in public. - Manage your All-Access account View & update account details, pay bills, schedule service and more for our All-Access scooter rental program!

About

DAVE, Diagnostic Assistant

This diagnostic assistant helps technicians troubleshoot and repair commercial equipment. It offers step-by-step guidance, part identification, and essential field tools for food service, refrigeration, and HVAC/R professionals.

Highlights
  • Step-by-step troubleshooting guidance
  • Photo identification of parts and error codes
  • Extensive parts lookup across brands
  • HVAC/R calculation tools
  • Field utility tools
  • Saved job history and parts library
Features
Read full description

DAVE is the diagnostic assistant built for the people who fix commercial equipment — food service, refrigeration, ice machines, and HVAC/R. Point it at a problem and get real answers: troubleshooting steps, part numbers, error-code meanings, and repair guidance, right on the job. WHAT DAVE DOES • Ask Dave — Describe a symptom in plain English ("unit won't heat," "ice machine shows E02") and get step-by-step diagnostic help, likely causes, and the parts you'll need. • Dave Vision — Snap a photo of a part, a data plate, or an error code on a display and let Dave help identify what you're looking at. • Parts Lookup — Search thousands of real part numbers across dozens of major brands. Find the right gasket, relay, or board — with sizes and fitment — and jump straight to ordering. • HVAC/R Tools — Superheat/Subcooling calculator, Ohm's Law, refrigerant P/T chart, and error-code lookup, all in your pocket. • Field Tools — Level, measure, unit converter, calculator, timer, and flashlight for everyday work. • MyDave & History — Save parts and jobs to your own library and revisit every conversation, searchable anytime. BUILT FOR TECHNICIANS Whether you're a seasoned tech or new to the trade, DAVE helps you work faster and more confidently. It's a reference and assistant — always confirm critical repairs against manufacturer documentation and follow proper safety procedures. DAVE PRO Upgrade to DAVE Pro for unlimited Ask Dave, Photo Diagnosis, saved parts and jobs, full searchable history, and code scanning. • Monthly: $7.99 / month • Yearly: $59.00 / year (best value) Subscriptions auto-renew unless cancelled at least 24 hours before the end of the period. Manage or cancel anytime in your App Store account settings. Managing a shop or fleet? Contact us at dave@kjgdesign.com about team pricing. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sites.google.com/view/dave-app2026/privacy-policy-page

Screenshots

Unagi4 screens
DAVE, Diagnostic Assistant4 screens

Verdict

The call

The clearest difference is monetization model: Unagi at free against DAVE, Diagnostic Assistant's freemium. Unagi also leads on iOS requirement (15.2 vs 26.4). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard2 real differences · 8 level
Unagi versus DAVE, Diagnostic Assistant: the parameters behind the verdict, then further details
ParameterUnagiDAVE, Diagnostic Assistant
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews8.9% of reviews—
Number of ratings—1 — better
Update frequencyEvery 3 months—
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterFreemium
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.2 — better26.4
Further details — not scored
Size23 MB16 MB
Age rating4+4+
DeveloperUnagi IncorporatedKENT JEREMY GARRISON

Bugs and requests

Unagi

Reported bugs

11 issues
  • App frequently locks scooter
  • Scooter won't connect to app/Bluetooth
  • App won't let user log in
  • Firmware update limits speed to 15mph
  • App doesn't show mapping for rides
Show 6 more
  • App doesn't support older scooter models
  • App doesn't pair with scooter
  • App settings screen doesn't scroll fully
  • Scooter won't verify through app
  • Bluetooth pairing doesn't work
  • App sign up doesn't work in Australia

Requested features

5 requests
  • Fix firmware to restore 20mph speed
  • Make older scooter models compatible with the app
  • Improve app's trip recording and mapping feature
  • Increase initial acceleration for Voyager model
  • Add parallel XT60 connector for external batteries

DAVE, Diagnostic Assistant

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Unagi

No in-app purchases

None

DAVE, Diagnostic Assistant

No in-app purchases

Questions

Is Unagi free?
Unagi is free to download, with no in-app purchases.
Is DAVE, Diagnostic Assistant free?
DAVE, Diagnostic Assistant is free to download, with no in-app purchases.
Do Unagi or DAVE, Diagnostic Assistant have ads?
Neither Unagi nor DAVE, Diagnostic Assistant shows ads.

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