Comparison

When2Do vs MSRX PDF Compressor

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

Head to head
About

When2Do

This app helps you plan your activities by scheduling them based on duration, deadline, and your work schedule. It tracks task progress and can export data to CSV. View your overall schedule in a GANTT style.

Highlights
  • Automated activity scheduling
  • Task duration and deadline input
  • Work schedule and holiday consideration
  • Task execution status tracking
  • CSV data export
  • GANTT style schedule view
Features
Read full description

When2Do pianifica le vostre attività. When2Do plans your activities. Describe the activity by giving a name, duration, and deadline. When2Do will schedule it as soon as possible, taking into account other activities, daily work schedule, weekdays and holidays. When2Do will provide you with the scheduled date and time and indicate whether or not it meets the deadline. Whenever you start working on a task you can set the execution status and change it when you stop. Using this information, When2Do can produce a csv file for use in other applications. Tasks can be grouped into Objectives and the overall schedule can be seen in GANTT style.

About

MSRX PDF Compressor

Features
Read full description

MSRX PDF Compressor makes PDFs smaller without turning your text into pictures. Most PDF compressors flatten every page to an image. The file shrinks, but you lose selectable text, search, links, and anything a screen reader can use. This one looks at each page first. Pages with real text keep it. Pages that are scans or photographs get re-encoded, which is where nearly all the saving in a scanned document lives anyway. TEXT STAYS TEXT A 135-page workbook came out 33% smaller with all 138,000 characters still selectable and searchable. A 224-page scanned textbook went from 100 MB to 9 MB. The difference is the document, not the setting — and the app tells you which one you have before you commit. FIT UNDER A LIMIT Tell it the limit your email or upload form imposes — 5, 10, 20 or 25 MB — and it works out the settings for you, testing real pages rather than guessing. If it cannot reach your limit, it says so and hands back the smallest file it managed. It will not pretend it succeeded. SEE WHERE THE MEGABYTES ARE Before you compress, the app breaks the file down: images, fonts, page content, overhead. Then it tells you plainly what to expect — "10 of 28 pages are scans. Those compress well; the rest keep their text." COMPARE BEFORE AND AFTER Put the original and the result side by side, page by page, and confirm for yourself that nothing was lost. ALSO IN THIS VERSION • Compress several PDFs at once, with per-file results • History, with a running total of everything you have saved • Greyscale conversion for scans and photographs • Compress from any app's share sheet, without opening this one • A Shortcuts action, for compressing as part of an automation • Full Dark Mode, Dynamic Type, and VoiceOver support HONEST ABOUT WHAT IT CANNOT DO Compression works on images. A document that is mostly text and embedded fonts has very little to give, and the app says so up front instead of letting you find out afterwards. Scanned documents are where you will see the dramatic numbers. PRIVATE BY DESIGN Everything happens on your iPhone or iPad. Your files are never uploaded, and the app has no analytics, no accounts, and no network access at all. FILE LIMITS Up to 500 MB and 2,000 pages per document. Free. No ads, no subscriptions, no in-app purchases.

Screenshots

When2Do3 screens
MSRX PDF Compressor4 screens

Verdict

The call

The clearest difference is update cadence: When2Do at every 10 days against MSRX PDF Compressor's every 5 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

When2Do ships an update every 10 days, MSRX PDF Compressor every 5 months. The most recent releases landed on September 29, 2026 and October 4, 2026 respectively.

Scorecard1 real difference · 9 level
When2Do versus MSRX PDF Compressor: the parameters behind the verdict, then further details
ParameterWhen2DoMSRX PDF Compressor
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 10 days — betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.1 — better17.0
Further details — not scored
Size2 MB7 MB
Age rating12+4+
DeveloperDanilo BottiniMrinal Singh Raja

In-app purchases

None

When2Do

No in-app purchases

None

MSRX PDF Compressor

No in-app purchases

Questions

Is When2Do free?
When2Do is free to download, with no in-app purchases.
Is MSRX PDF Compressor free?
MSRX PDF Compressor is free to download, with no in-app purchases.
Do When2Do or MSRX PDF Compressor have ads?
Neither When2Do nor MSRX PDF Compressor shows ads.
Which is updated more often, When2Do or MSRX PDF Compressor?
When2Do ships an update every 10 days, and MSRX PDF Compressor every 5 months. Most recently, When2Do was updated on September 29, 2026 and MSRX PDF Compressor on October 4, 2026.

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