Comparison

Stable Diffusion vs UglyPDF

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

Head to head
About

Stable Diffusion

Generate unique images from text prompts using AI. Create anime art, realistic photos, digital art, and more for social media, creative projects, or design materials. Offers unlimited access and 4K generation through in-app purchases.

Highlights
  • AI image generation from text
  • Multiple art styles (anime, realistic, digital)
  • Profile icon and avatar creation
  • Design material generation
  • Text to image conversion
  • 4K image generation (premium)
Features
Read full description

This app uses Stable Diffusion, an AI image generation model that can generate images from text. [What is image generation AI?] It is a technology in which AI automatically generates images from input text. The types of images that can be generated include anime art, realistic photos, color art, digital art, AI photos, and creative designs. Create your own unique images! [How to use Stable Diffusion] •⁠ ⁠Creating profile icons and avatars for social media •⁠ ⁠AI art generation and creative activities •⁠ ⁠Creating design materials and art photos •⁠ ⁠Text to image conversion for projects Stable Diffusion – AI Generator also offer In-App Purchases: Upgrade to unlock unlimited access, 4K image generation, and full access to all features. • Weekly plan: $4.99 • Yearly plan: $34.99 • No commitment — Cancel anytime. Privacy Policy: https://nexlyco.com/stable/privacypolicy.html Terms of Use: https://nexlyco.com/aiphoto/termsofuse.html

About

UglyPDF

Features
Read full description

Tell UglyPDF what you need and watch a finished document appear. Then change anything by hand: the text, the images, the colors, the layout. Invoices, resumes, reports, proposals, certificates, letters, contracts, flyers and more, signed and ready to send as a PDF. No templates to fight. No design skills needed. CREATE BY CHATTING • Describe the document in plain words: "a clean invoice for my design studio", "a two-page resume for a software engineer". • Watch the pages build in front of you while the AI works. • Ask for changes the same way: "make it more modern", "add my logo to the header", "shorten the summary". • Pick how hard it thinks. Base is fastest and spends the fewest credits, Thinking reasons before it writes, Pro goes deepest. EDIT EVERY DETAIL • Tap any text and rewrite it in a native editor. • Move, resize, rotate, duplicate and delete elements with your fingers. • Change fonts, colors, spacing, backgrounds, gradients and borders. • Add photos from your library and crop them in place. • Add and reorder pages. Switch the whole theme in one tap. • Undo and redo everything. Every version is kept. SIGN YOUR DOCUMENTS • Draw your signature with a finger or Apple Pencil. Or type your name and pick a style. • Drag it into place on the page. • Save it once and use it on your next document. YOUR BRAND ON EVERY PAGE • Make a brand kit from your logo or your website. • New documents come out with your logo, colors and fonts. START FROM A PDF YOU ALREADY HAVE • Import a PDF under 20 MB and make it editable. • Fix the wording, restyle it or rebuild it in a new look. EXPORT • PDF, rendered server-side for print-ready, pixel-perfect output. • PNG or JPEG, one image per page, for sharing anywhere. YOUR PROJECTS, EVERYWHERE Documents save to your account automatically. Start on your iPhone and pick up on your iPad or at uglypdf.com. IN YOUR LANGUAGE English, Spanish, Chinese, Hindi, Arabic, French, Portuguese, Japanese, German, Korean and Bengali. FREE TO START Your account starts with free credits. Each document or edit spends a few. Exports are free and unlimited, with no watermark. Privacy Policy: https://uglypdf.com/privacy Terms of Use: https://uglypdf.com/terms Questions? Something still looks ugly? support@uglypdf.com

Screenshots

Stable Diffusion4 screens
UglyPDF4 screens

Verdict

The call

Stable Diffusion and UglyPDF are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Stable Diffusion sells 3 in-app purchases, starting at $5.99 per 7 days and UglyPDF sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.

ScorecardNo meaningful differences
Stable Diffusion versus UglyPDF: the parameters behind the verdict, then further details
ParameterStable DiffusionUglyPDF
PriceFreeFree
Positive reviews22.2% of reviews—
Update frequencyWeeklyWeekly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.6 — better17.0
Further details — not scored
Size55 MB9 MB
Age rating4+4+
DeveloperOnur KaplanAmon Chowdhury

In-app purchases

3 purchases

Stable Diffusion

Subscriptions2
  • Weekly Plan$5.997 Days
  • Yearly Plan$34.991 Year
One-time1
  • Lifetime Premium$99.99
2 purchases

UglyPDF

Subscriptions2
  • Pro (Monthly)1 Month trial$7.991 Month
  • Pro (Yearly)1 Year trial$79.991 Year

Questions

Is Stable Diffusion free?
Stable Diffusion is free to download, with in-app purchases available.
Is UglyPDF free?
UglyPDF is free to download, with in-app purchases available.
Do Stable Diffusion or UglyPDF have ads?
Neither Stable Diffusion nor UglyPDF shows ads.
Which is updated more often, Stable Diffusion or UglyPDF?
Stable Diffusion ships an update weekly, and UglyPDF weekly. Most recently, Stable Diffusion was updated on October 31, 2026 and UglyPDF on October 29, 2026.

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