Comparison

TimeCalcX vs PDFConverter.app

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

Head to head
About

TimeCalcX

Read full description

このアプリは、「年、月、日、時間、分、秒」のいずかの入力に対して、対応する「年、月、日、時間、分、秒」を一括計算し、一括表示する時間計算専用電卓です。 電気回路や機械を扱っていると、「この部品の寿命は、平均60,000時間です」などと説明されますが、「60,000時間って、何日?、何年?」となることがあります。この時間計算用電卓を使うと、一発で「年、月、日、時間、分、秒」に変換表示されるので便利です。(60,000時間は、2500日、6.85年です) 入力した2つの日時の差分を計算する機能を追加しました。業務時間の計算の際などに利用できます。 表示する「年、月、日、時間、分、秒」は、小数点以下2桁までです。 入力する「年、月、日、時間、分、秒」は、この限りではありません。 尚、起動時直後は、1年に対する「年、月、日、時間、分、秒」が表示されています。 また、1ヶ月は30.41666667日、1年は365日として計算しており、うるう年は加味していませんので、その点はご考慮ください。 誤って、ソフトキーボード を立ち上げてしまった場合は、「Enterキー」又は、「改行キー」を押してください。

About

PDFConverter.app

Easily convert documents and images to PDF, TXT, RTF, and HTML. Extract text, draw, and annotate directly on your files. Manage and convert documents efficiently with an intuitive interface.

Highlights
  • Convert JPG, PNG, BMP to PDF
  • Convert to TXT, RTF, HTML
  • Extract text from documents
  • Draw and annotate PDFs
  • Intuitive document management
Read full description

Our app provides a complete solution for seamlessly converting documents across multiple formats. Effortlessly convert files to and from PDF, TXT, RTF, and HTML, or turn images like JPG, PNG, and BMP into PDFs. Easily extract text from various document types, and use built-in tools to draw or add annotations directly on your PDFs. With an intuitive interface, the app makes managing and converting your documents simple and efficient — all in one place. Subscription Info: All features require an active subscription, which you can manage or cancel anytime in your device’s subscription settings. Privacy - https://docs.google.com/document/d/1ud-RT1Si6gPgRTVbtIrvMrt5CMbiwqvv9Q6j5Ql8BCA/edit?usp=sharing Terms - https://docs.google.com/document/d/11PP97SZDN3jauD2iVFNuTgPjZwf9qHnzO3cCNxUEkrI/edit?usp=sharing"

Screenshots

TimeCalcX4 screens
PDFConverter.app4 screens

Verdict

The call

The clearest difference is in-app purchases: TimeCalcX at none against PDFConverter.app's 2. PDFConverter.app's advantage is ads (none vs shown) and update cadence (every 10 days vs every 6 months). On price, device support and iOS requirement 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. PDFConverter.app sells 2 in-app purchases, starting at $4.99 per 7 days. TimeCalcX asks for nothing beyond the download.

UpkeepUpdate frequency

TimeCalcX ships an update every 6 months, PDFConverter.app every 10 days. The most recent releases landed on August 26, 2026 and September 19, 2026 respectively.

Scorecard3 real differences · 6 level
TimeCalcX versus PDFConverter.app: the parameters behind the verdict, then further details
ParameterTimeCalcXPDFConverter.app
PriceFreeFree
Rating—3.7 (23 ratings) — better
Number of ratings—23 — better
Update frequencyEvery 6 monthsEvery 10 days — better
AdsYesNo — better
In-app purchasesNo — betterYes
Monetization—Subscription
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.0 — better16
Further details — not scored
Size6 MB20 MB
Age rating17+4+
Developerkoji kamogawaThomas Clark

In-app purchases

None

TimeCalcX

No in-app purchases

2 purchases

PDFConverter.app

Subscriptions2
  • All-in-One PDF Power3 Days trial$4.997 Days
  • Premium$4.997 Days

Questions

Is TimeCalcX free?
TimeCalcX is free to download, with no in-app purchases.
Is PDFConverter.app free?
PDFConverter.app is free to download, with in-app purchases available.
Do TimeCalcX or PDFConverter.app have ads?
TimeCalcX shows ads; PDFConverter.app does not.
Which is updated more often, TimeCalcX or PDFConverter.app?
TimeCalcX ships an update every 6 months, and PDFConverter.app every 10 days. Most recently, TimeCalcX was updated on August 26, 2026 and PDFConverter.app on September 19, 2026.

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