Comparison

CalcuDose vs PDF Editor & Reader

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

Head to head
About

CalcuDose

Easily calculate liquid dosages and flow rates for medical applications. Input concentration, desired quantity, or volume and duration to get precise results in ml/h and drops/min. Access your last 15 calculations through the history feature.

Highlights
  • Dose calculation
  • Flow rate calculation
  • Unit and volume input
  • Time unit selection
  • Drops per ml selection
  • Calculation history
Features
Read full description

A few clicks are all it takes to confidently perform your cross-product calculations related to liquid dosages and flow rate calculations in ml/h and drops/min. Dose Calculation: 1. Select the base unit for the concentration of your solution from the options provided (g, mg, µg, or IU). 2. Enter the concentration of your solution in the Unit and Volume fields. 3. Enter the desired quantity. 4. Click Calculate, and the result will be displayed in milliliters along with a detailed breakdown of the calculation. Flow Rate Calculation: 1. Select the unit of time, either hours or minutes. 2. Choose a number of drops per ml. 3. Enter the volume in ml. 4. Enter the duration. 5. Click Calculate, and the result will be displayed in ml/h and drops/min, with a detailed breakdown of the calculations always shown. Retrieve all information from your last 15 calculations through the history feature in case of doubt or need. Give it a try; the first 5 calculations are free. Note: For dose calculation, the result in ml is rounded to the second decimal place. For flow rate calculation, the result in ml/h is rounded to the second decimal place, and the result in drops/min is rounded to the nearest whole number.

About

PDF Editor & Reader

Edit, read, and convert documents directly on your device. This app offers tools to scan, merge, split, sign, and protect your files. It also uses AI to summarize, translate, and answer questions about document text.

Highlights
  • Read and mark up PDFs
  • Scan documents with camera
  • Convert PDFs to Word, Word to PDF
  • Organize pages (merge, split, reorder)
  • Sign, protect, and redact documents
  • AI-powered summarization and translation
  • Content search across documents
Features
Read full description

Read, mark up and convert documents right on your iPhone, then share them when you are ready. PDF Studio brings your PDF reader, scanner and everyday document tools into one calm place. The app interface is in English. SUBSCRIPTION REQUIRED PDF Studio is a subscription app. A subscription is required to use the app, and new customers can start with a free trial. The plans, prices and trial length are shown before you commit, and you can cancel anytime. SCAN AND CONVERT Scan paper with the camera, turn photos or typed text into a PDF, and compress a file down to a sensible size. Convert PDF text to an editable Word document, turn Word files into PDFs, or export pages as images. PDF to Word rebuilds the text rather than preserving the original page layout. ORGANIZE PAGES Merge files, split a document, and reorder, rotate or remove pages in a visual grid. Find words across your whole library with content search. SIGN AND PROTECT Fill in forms, draw and place your signature, add a password or a watermark, and black out sensitive areas. Blackouts flatten the affected pages. Compression can change image quality and text searchability; the reduction depends on your file. GET HELP READING Use cloud AI to summarize, ask questions or translate document text into 18 languages. It processes up to the first 25 pages, limited to 16,000 characters. Check important answers against your document. Conversion, markup and text recognition happen on your iPhone. AI sends the document name, extracted text and your questions to a cloud service over an encrypted connection. AI requires internet access. KEEP YOUR FILES TOGETHER Use local folders, favorites and name search. Share through the iPhone share menu. No account is required, and there are no ads. SUBSCRIPTIONS PDF Studio offers weekly and annual subscriptions. Prices are shown in the app before purchase. Restore Purchases is available. Payment is charged to your Apple Account at confirmation, or after an eligible free trial. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Manage or cancel in your Apple Account subscription settings. Any unused trial time is forfeited when you purchase a subscription. Support: https://yx0z7ffx6x6rqydfzwlj4-web.rork.live/support Privacy Policy: https://yx0z7ffx6x6rqydfzwlj4-web.rork.live/privacy Terms of Use: https://yx0z7ffx6x6rqydfzwlj4-web.rork.live/terms

Screenshots

CalcuDose4 screens
PDF Editor & Reader4 screens

Verdict

The call

The clearest difference is monetization model: CalcuDose at free with in-app purchases against PDF Editor & Reader's subscription. CalcuDose also leads on update cadence (every 6 days vs every 3 weeks) and iOS requirement (12.0 vs 18.0). PDF Editor & Reader's advantage is review sentiment (100% vs 86%). 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. CalcuDose sells 1 one-off in-app purchase and PDF Editor & Reader sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

CalcuDose ships an update every 6 days, PDF Editor & Reader every 3 weeks. The most recent releases landed on October 7, 2026 and October 16, 2026 respectively.

Scorecard4 real differences · 6 level
CalcuDose versus PDF Editor & Reader: the parameters behind the verdict, then further details
ParameterCalcuDosePDF Editor & Reader
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews85.7% of reviews100.0% of reviews — better
Number of ratings—1 — better
Update frequencyEvery 6 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPod — betteriPhone
Requires iOS12.0 — better18.0
Further details — not scored
Size28 MB21 MB
Age rating4+4+
DeveloperQRTouch DevelopmentApptimize LLC

Customer experience

CalcuDose

Written reviews7 reviews
Positive85.7%
Neutral0.0%
Negative14.3%

PDF Editor & Reader

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

CalcuDose

One-time1
  • CalcuDose unlimited for life$1.99
2 purchases

PDF Editor & Reader

Subscriptions2
  • Pro Weekly3 Days trial$4.997 Days
  • PDF Pro Annual$39.991 Year

Questions

Is CalcuDose free?
CalcuDose is free to download, with in-app purchases available.
Is PDF Editor & Reader free?
PDF Editor & Reader is free to download, with in-app purchases available.
Do CalcuDose or PDF Editor & Reader have ads?
Neither CalcuDose nor PDF Editor & Reader shows ads.
Which is updated more often, CalcuDose or PDF Editor & Reader?
CalcuDose ships an update every 6 days, and PDF Editor & Reader every 3 weeks. Most recently, CalcuDose was updated on October 7, 2026 and PDF Editor & Reader on October 16, 2026.

Other comparisons