Comparison

TrueAuth vs SpecScan VIN Decoder

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

Head to head
About

TrueAuth

This utility app offers secure and private authorization processes. It focuses on providing a safe way to manage authentication flows.

Highlights
  • Secure authorization flows
  • Private authentication
  • User authentication management
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TrueAuth provides secure & private authorization flows.

About

SpecScan VIN Decoder

Instantly determine a car's real market value using its VIN. Decode year, make, model, and factory options, then compare against live dealer listings. Ideal for buyers, sellers, enthusiasts, and dealers.

Highlights
  • Real market value with confidence rating
  • Comparable listings with prices and links
  • Deal analysis and offer price suggestions
  • Factory options decoded from VIN
  • Buyer guidance and negotiation tips
  • VIN scanning via door-jamb barcode
Features
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SpecScan tells you what a car is actually worth — instantly, from its VIN, priced against the live market instead of generic book values. Enter any VIN (or scan the door-jamb barcode) and SpecScan decodes the exact year, make, model, trim, and factory options, then values it against real dealer listings for the same car — the way a seasoned dealer prices inventory. Built by an exotic and performance car dealer, SpecScan is tuned for the vehicles mainstream valuation tools get wrong: Porsche, Ferrari, Lamborghini, McLaren, Corvette, Shelby and other performance and collector cars, where options, mileage, and trim can swing value by tens of thousands of dollars. WHAT YOU GET • Real market value with a confidence-rated price range • Comparable listings — actual cars for sale now, with prices, mileage, and links • Deal analysis — enter an asking price and see if it's a good, fair, or over-market deal • What to offer — accept / target / aggressive price points, plus a red-flag "too cheap" line • Options that matter — factory options decoded from the VIN, with resale impact • Buyer guidance — mileage context, history checks, and negotiation tips WHO IT'S FOR • Buyers who don't want to overpay • Sellers pricing a car to move • Enthusiasts and collectors tracking what their car is worth • Dealers sizing up trades and acquisitions Free to download, with complimentary scans every month. Questions or feedback? support@specscan.net — Terms of Use: https://specscan.net/terms Privacy Policy: https://specscan.net/privacy

Screenshots

TrueAuth2 screens
SpecScan VIN Decoder4 screens

Verdict

The call

The clearest difference is in-app purchases: TrueAuth at none against SpecScan VIN Decoder's 3. SpecScan VIN Decoder's advantage is update cadence (every 5 days vs fortnightly) and iOS requirement (15.5 vs 17.6). On price, ads, monetization model 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. SpecScan VIN Decoder sells 3 in-app purchases, starting at $19.99 per month. TrueAuth asks for nothing beyond the download.

UpkeepUpdate frequency

TrueAuth ships an update fortnightly, SpecScan VIN Decoder every 5 days. The most recent releases landed on October 7, 2026 and October 4, 2026 respectively.

Scorecard3 real differences · 7 level
TrueAuth versus SpecScan VIN Decoder: the parameters behind the verdict, then further details
ParameterTrueAuthSpecScan VIN Decoder
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings—1 — better
Update frequencyFortnightlyEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.615.5 — better
Further details — not scored
Size12 MB42 MB
Age rating4+4+
DeveloperAtomicFISpecScan LLC

Customer experience

TrueAuth

Written reviews6 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

SpecScan VIN Decoder

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

TrueAuth

No in-app purchases

3 purchases

SpecScan VIN Decoder

Subscriptions3
  • SpecScan Starter$19.991 Month
  • SpecScan Pro$49.991 Month
  • SpecScan Ultimate$99.991 Month

Questions

Is TrueAuth free?
TrueAuth is free to download, with no in-app purchases.
Is SpecScan VIN Decoder free?
SpecScan VIN Decoder is free to download, with in-app purchases available.
Do TrueAuth or SpecScan VIN Decoder have ads?
Neither TrueAuth nor SpecScan VIN Decoder shows ads.
Which is updated more often, TrueAuth or SpecScan VIN Decoder?
TrueAuth ships an update fortnightly, and SpecScan VIN Decoder every 5 days. Most recently, TrueAuth was updated on October 7, 2026 and SpecScan VIN Decoder on October 4, 2026.

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