Comparison

Convert to PDF vs Radioactivity Conversion

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

Head to head
About

Convert to PDF

Transform various document and image files into PDF format quickly and easily. Upload files to the cloud for fast conversion, then share your new PDFs through multiple options. Supports over 2000 source formats.

Highlights
  • Convert over 2000 source formats to PDF
  • Save as document or ebook
  • Use 'Open with' for file loading
  • Load images from gallery or camera
  • Multiple sharing options
Features
Read full description

Convert to PDF allows you to convert almost all known document formats to PDF as an e-book or document. Convert existing documents, images or other file formats to PDF! And after the conversion you can use multiple ways of sharing the file! How can we convert almost every file on your phone? Well, the converting is accomplished by uploading your file to the cloud where it will be converted and downloaded back to your phone. This all occurs really fast. Features: - Over 2000 source formats are supported - Convert to PDF (.pdf) as a document or ebook - Use the 'Open with' option to load files - Use the image gallery to load an image or take one using the camera

About

Radioactivity Conversion

Easily convert between various units related to radioactive decay. Understand the process of emitting radioactive particles and the properties of elements exhibiting radioactivity.

Highlights
  • Radioactive decay unit conversion
  • Information on radioactive decay process
  • Details on radioactive particles
  • Explanation of half-life
  • Properties of radioactive elements
Features
Read full description

Radioactivity Conversion or Radioactive Decay Unit Conversion - Easily convert between various Radioactive units. Radioactive decay is the process of emitting radioactive particles, particularly ionizing radiation. Various types of radioactive decay include alpha, beta, and gamma decay, named after the particles emitted during this process. As decay occurs, radioactive particles carry energy away from the nucleus. In some cases, radioactive decay can transform the original nucleus into either a different nucleus or a nucleus in an altered state. Radioactivity is a property exhibited by certain elements, where the atomic nucleus spontaneously loses electromagnetic energy due to its inherent instability. This phenomenon was first discovered in 1896 by the French physicist Antoine-Henri Becquerel. During this process, ionizing particles and electromagnetic radiation are emitted from the nucleus. Many elements exhibit natural radioactivity. The duration for radiation to undergo decay varies between elements and their isotopes, often measured in terms of a half-life. The half-life signifies the time it takes for an element's radiation to decrease to half of its initial intensity. Certain elements like uranium and thorium continuously emit radiation and ionizing particles, leading to the formation of different daughter elements while releasing energy in the form of alpha, beta, and gamma radiation. One particularly significant radioactive element is Radon, a dense, colorless, and odorless gas with a boiling point of -61.8°C (-79.2°F). Radon readily dissolves in water below its boiling point and can freeze at low temperatures. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.

Screenshots

Convert to PDF4 screens
Radioactivity Conversion4 screens

Verdict

The call

The clearest difference is review sentiment: Convert to PDF at 50% against Radioactivity Conversion's 0%. Convert to PDF also leads on rating (5.0 vs 3.0) and price ($1.99 vs $2.99). Radioactivity Conversion's advantage is ads (none vs shown). On ratings volume, update cadence, 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

Convert to PDF costs $1.99 and Radioactivity Conversion $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Convert to PDF holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews point the same way: 50% of Convert to PDF's written reviews are positive against 0% of Radioactivity Conversion's.

UpkeepUpdate frequency

Convert to PDF ships an update every 20 months, Radioactivity Conversion every 28 months. The most recent releases landed on October 19, 2026 and October 23, 2026 respectively.

Scorecard6 real differences · 4 level
Convert to PDF versus Radioactivity Conversion: the parameters behind the verdict, then further details
ParameterConvert to PDFRadioactivity Conversion
Price$1.99 — better$2.99
Rating5.0 (1 ratings) — better3.0 (2 ratings)
Positive reviews50.0% of reviews — better0.0% of reviews
Number of ratings12 — better
Update frequencyEvery 20 months — betterEvery 28 months
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better13
Further details — not scored
Size81 MB1 MB
Age rating4+4+
DeveloperIce Cold AppsNitrio

Customer experience

Convert to PDF

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews28 reviews
Positive50.0%
Neutral3.6%
Negative46.4%

Radioactivity Conversion

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews3 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Convert to PDF

No in-app purchases

None

Radioactivity Conversion

No in-app purchases

Questions

Is Convert to PDF free?
Convert to PDF costs $1.99, with no in-app purchases.
Is Radioactivity Conversion free?
Radioactivity Conversion costs $2.99, with no in-app purchases.
Which has better reviews, Convert to PDF or Radioactivity Conversion?
Convert to PDF is rated higher. Convert to PDF averages 5.0 out of 5 from 1 ratings, while Radioactivity Conversion averages 3.0 from 2 ratings.
Do Convert to PDF or Radioactivity Conversion have ads?
Convert to PDF shows ads; Radioactivity Conversion does not.
Which is updated more often, Convert to PDF or Radioactivity Conversion?
Convert to PDF ships an update every 20 months, and Radioactivity Conversion every 28 months. Most recently, Convert to PDF was updated on October 19, 2026 and Radioactivity Conversion on October 23, 2026.

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