Comparison

Sungrade vs PDF Toolkit X

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

Head to head
About

Sungrade

Features
Read full description

Compare saved windows for modeled direct sun during a specific date and daytime block instead of relying only on annual averages. HOW IT WORKS 1. Open Compare and tap Sun schedule. 2. Choose a date, start and end hour, and whether to rank for more or less direct sun. 3. Compare the saved windows and share the time-block report. Saved windows, annual and seasonal comparisons, manual coordinates and plant reference tools remain available. WHAT TO KNOW Times use each window’s local clock and exclude the end hour. The five-minute vertical-window model uses saved facing direction and horizon obstructions. It does not measure indoor brightness, glare, heat, weather or plant growth. Glass and unsaved obstacles affect actual light. Zero modeled direct sun does not mean darkness. iPhone and iPad.

About

PDF Toolkit X

Features
Read full description

Make light work of every PDF. PDF Toolkit brings 65 useful tools into one beautiful workspace for iPhone and iPad. From study notes and travel plans to reports and everyday paperwork, keep your documents organized and ready for whatever comes next. • Read and annotate Find text, highlight important details, draw on pages, and add notes to capture your ideas. • Sign and share Create a handwritten signature, save it for reuse, and place it on your PDFs. Share or print your finished documents. • Organize your pages Merge documents, split PDFs, extract selected pages, and rearrange, rotate, or remove pages with ease. • Convert your files Create PDFs from images, text, Markdown, Office documents, and more. Export PDF pages as images or extract text for your next task. • Scan paper documents Turn printed paperwork into PDFs using your device’s camera. • Personalize and protect Add watermarks and page numbers, fill supported PDF forms, compress files, and protect documents with passwords. • Keep everything in order Create folders, mark favorites, and quickly find the document you need with library search. PDF content is processed locally on your device, and no account is required to get started. Less clutter. More clarity. Download PDF Toolkit and make room for your next great idea.

Screenshots

Sungrade3 screens
PDF Toolkit X3 screens

Verdict

The call

The clearest difference is price: PDF Toolkit X at Free against Sungrade's $0.99. Sungrade's advantage is iOS requirement (17.0 vs 26.0). On update cadence, 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

PDF Toolkit X is free to download; Sungrade costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

Scorecard2 real differences · 4 level
Sungrade versus PDF Toolkit X: the parameters behind the verdict, then further details
ParameterSungradePDF Toolkit X
Price$0.99Free — better
Update frequencyEvery 4 daysEvery 4 days
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better26.0
Further details — not scored
Size34 MB4 MB
Age rating4+4+
DeveloperRobert CorbinKhang Le

In-app purchases

None

Sungrade

No in-app purchases

None

PDF Toolkit X

No in-app purchases

Questions

Is Sungrade free?
Sungrade costs $0.99, with no in-app purchases.
Is PDF Toolkit X free?
PDF Toolkit X is free to download, with no in-app purchases.
Do Sungrade or PDF Toolkit X have ads?
Neither Sungrade nor PDF Toolkit X shows ads.
Which is updated more often, Sungrade or PDF Toolkit X?
Sungrade ships an update every 4 days, and PDF Toolkit X every 4 days. Most recently, Sungrade was updated on October 28, 2026 and PDF Toolkit X on October 29, 2026.

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