Comparison

Infinity Book vs SDF

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

Head to head

About

Infinity Book

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Lleva tus apuntes al siguiente nivel, combinando nuestros cuadernos reutilizables con la tecnología de nuestra aplicación, permitiéndote escanear tus escritos con la cámara de tu móvil. Con una interfaz intuitiva, puedes configurar destinos integrados con servicios de almacenamiento en la nube como Google Drive, OneDrive, iCloud, y otros. Una vez escaneados, los archivos se pueden guardar o enviar en varios formatos como JPEG, PDF, Word y Excel. La avanzada tecnología OCR (Reconocimiento Óptico de Caracteres) permite extraer texto de las imágenes, facilitando la búsqueda de documentos por su contenido.

About

SDF

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Aplicación que permite realizar la toma de firma de un documento notarial en forma remota

Screenshots

Infinity Book4 screens

SDF4 screens

Verdict

The call

The clearest difference is update cadence: Infinity Book at monthly against SDF's every 4 months. 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

Infinity Book ships an update monthly, SDF every 4 months. The most recent releases landed on October 10, 2026 and October 1, 2026 respectively.

Scorecard1 real difference · 5 level

Infinity Book versus SDF: the parameters behind the verdict, then further details
Parameter	Infinity Book	SDF
Price	Free	Free
Update frequency	Monthly — better	Every 4 months
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPod
Requires iOS	14.0 — better	15.1
Further details — not scored
Size	144 MB	42 MB
Age rating	4+	4+
Developer	Elfinbook SRL	Colegio de Escribanos de la Ciudad de Buenos Aires

In-app purchases

None

Infinity Book

No in-app purchases

None

SDF

No in-app purchases

Questions

Is Infinity Book free?

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

Is SDF free?

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

Do Infinity Book or SDF have ads?

Neither Infinity Book nor SDF shows ads.

Which is updated more often, Infinity Book or SDF?

Infinity Book ships an update monthly, and SDF every 4 months. Most recently, Infinity Book was updated on October 10, 2026 and SDF on October 1, 2026.