Comparison

DSAuth vs Contrastaria

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

Head to head

About

DSAuth

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A App DSAuth foi desenvolvida para facilitar o acesso seguro às suas aplicações favoritas. Esta permite que utilize a autenticação de dois fatores à qual já está habituado, mas adiciona um novo elemento de segurança na forma de PIN ou Leitor de Impressão Digital permitindo manter os seus códigos afastados de terceiros.

About

Contrastaria

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Através da App da Contrastaria pode, de forma conveniente ler um código único digital protegido por criptografia avançada e obter toda a informação relevante da joia para confirmar a sua autenticidade: qual o metal precioso de que é feito, o seu fabricante, o toque legal, entre muitas outras. Pode ainda gerar um certificado digital da peça e, se assim o entender, personalizar uma mensagem de oferta, e inserir, ao longo do tempo, outras informações, permitindo, assim, registar a sua história.

Screenshots

DSAuth4 screens

Contrastaria4 screens

Verdict

The call

The clearest difference is update cadence: Contrastaria at every 3 weeks against DSAuth's every 3 months. DSAuth's advantage is iOS requirement (12.4 vs 16.0). 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.

UpkeepUpdate frequency

DSAuth ships an update every 3 months, Contrastaria every 3 weeks. The most recent releases landed on September 8, 2026 and September 24, 2026 respectively.

Scorecard2 real differences · 4 level

DSAuth versus Contrastaria: the parameters behind the verdict, then further details
Parameter	DSAuth	Contrastaria
Price	Free	Free
Update frequency	Every 3 months	Every 3 weeks — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod — better	iPhone, iPad
Requires iOS	12.4 — better	16.0
Further details — not scored
Size	16 MB	161 MB
Age rating	4+	4+
Developer	DigitalSign	Imprensa Nacional-Casa da Moeda S.A.

In-app purchases

None

DSAuth

No in-app purchases

None

Contrastaria

No in-app purchases

Questions

Is DSAuth free?

DSAuth is free to download, with no in-app purchases.

Is Contrastaria free?

Contrastaria is free to download, with no in-app purchases.

Do DSAuth or Contrastaria have ads?

Neither DSAuth nor Contrastaria shows ads.

Which is updated more often, DSAuth or Contrastaria?

DSAuth ships an update every 3 months, and Contrastaria every 3 weeks. Most recently, DSAuth was updated on September 8, 2026 and Contrastaria on September 24, 2026.