Comparison

TRUSTCODE TAX STAMPS vs GPGuard

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

Head to head
About

TRUSTCODE TAX STAMPS

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TRUSTCODE® TAX STAMPS is a web-based authentication, information and communication system that connects the real world to the virtual. TRUSTCODE® TAX STAMPS designates visual authentication elements that are linked to a comprehensive database. Depending on authorities' needs, the database contains product information for end users, data of product movements of excisable goods, and product validation data for customs. The data linked to the optical signs can be read by smartphones with a customized app. This app is designated to demonstrate the mentioned functionalities. This app is powered by our TRUSTCODE® technology.

About

GPGuard

Features
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GPGuard is the ultimate tool for verifying the authenticity of labeled products. With our cutting-edge technology, you can protect yourself from counterfeit items and make confident purchases. The app utilizes the macro camera on compatible iPhones to ensure precise label verification. Simply position the label in the overlay displayed on your screen and let our advanced algorithms do the rest. Experience peace of mind knowing that the product you're buying is genuine. Say goodbye to counterfeits and join our growing community of savvy shoppers. Download GPGuard now!

Screenshots

TRUSTCODE TAX STAMPS3 screens
GPGuard4 screens

Verdict

The call

TRUSTCODE TAX STAMPS and GPGuard are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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.

UpkeepUpdate frequency

TRUSTCODE TAX STAMPS ships an update every 3 months, GPGuard every 2 months. Both last shipped on September 17, 2026.

ScorecardNo meaningful differences
TRUSTCODE TAX STAMPS versus GPGuard: the parameters behind the verdict, then further details
ParameterTRUSTCODE TAX STAMPSGPGuard
PriceFreeFree
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.015.0
Further details — not scored
Size59 MB77 MB
Age rating4+4+
DeveloperLeonhard KURZ Stiftung & Co. KGDynamicElement AG

In-app purchases

None

TRUSTCODE TAX STAMPS

No in-app purchases

None

GPGuard

No in-app purchases

Questions

Is TRUSTCODE TAX STAMPS free?
TRUSTCODE TAX STAMPS is free to download, with no in-app purchases.
Is GPGuard free?
GPGuard is free to download, with no in-app purchases.
Do TRUSTCODE TAX STAMPS or GPGuard have ads?
Neither TRUSTCODE TAX STAMPS nor GPGuard shows ads.
Which is updated more often, TRUSTCODE TAX STAMPS or GPGuard?
TRUSTCODE TAX STAMPS ships an update every 3 months, and GPGuard every 2 months. Most recently, TRUSTCODE TAX STAMPS was updated on September 17, 2026 and GPGuard on September 17, 2026.

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