Preview mini vs poly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Preview mini
Edit and annotate images and PDFs with a desktop-like experience on your iPhone and iPad. Offers advanced features for viewing, converting, and managing files, inspired by macOS.
- Image editing and cropping
- PDF annotation and editing
- File conversion
- Drag and drop support
- Keyboard shortcuts
- Password protection for PDFs
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Preview mini is a powerful tool for working with images and PDFs on iPhone and iPad. Inspired by macOS. Created for iOS. Preview mini combines the convenience of editing images and PDFs into a single application, offering advanced features for viewing, annotating, and converting files. The macOS-inspired desktop experience, featuring the brand-new File Desktop, familiar window controls, drag and drop, keyboard interaction, and even more to fall in love with. IMAGE EDITING – Highlight and crop image fragments – Rotate, flip, and resize – Add text, notes, and shapes – Support for blank templates with resolution selection PDF HANDLING – Edit and annotate PDF documents – Highlight text and create custom annotations* – Duplicate, convert, and manage PDF pages* – Add and remove passwords to protect files* IMPORT, EXPORT, AND INTEGRATION – Export images in HD quality* – Export JPEG/PNG with file size preview* – Support for keyboard shortcuts and trackpad for convenient use* *Features available in the full version of the application. Using Preview mini significantly simplifies the processing of images and PDF documents. You can quickly edit files, highlight important details, fill out forms, and add signatures without the need to switch between different applications. This saves you time, increases productivity, and makes working with documents convenient and intuitive! Download Preview mini and manage images and PDFs with macOS convenience on your iPhone and iPad! ––– Legal notice This application is NOT an Apple product. Preview mini is an independent development, inspired by macOS but not affiliated with Apple Inc. Images in the screenshots are provided by artists: Pok Rie (https://www.pexels.com/de-de/@pok-rie-33563) Fabian Wiktor (https://www.pexels.com/de-de/@fabianwiktor)
poly
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Time is more than just a sequence of numbers. It is an art form that constantly changes, has shape, and transforms fluidly. "PolyMorph Timer" is a completely new style of clock and timer application that beautifully visualizes the inorganic flow of time through "cyberpunk-style neon effects." Free yourself from static and boring clock screens and redesign your time with beautiful, pulsing geometric animations that transform (morph) over time. Whether you are studying, working, meditating, or simply want to relax while gazing at beautiful geometric patterns. This ASMR-like soothing visual experience will push your concentration and creativity to the limit, transforming your smartphone into a cutting-edge piece of digital art. Main Features and Characteristics \[1. Algorithmic Clock\] You no longer need a clock just to check the time. The current "hour," "minute," and "second" are represented three-dimensionally by three overlapping polygons. Furthermore, every 5 seconds out of 60, the polygon shapes change dynamically, repeating a cycle of expansion and contraction forever. The animation of geometric data sorting, pulsing and breathing like a living creature, is a sight to behold. With intuitive swipe and drag operations, you can freely observe the shape of "time" from any angle. \[2. Matrix Digital Rain Stopwatch\] An overwhelmingly cool stopwatch function that pursues the cyberpunk aesthetic to the extreme. It is not just for measuring time; it employs a unique animation visual effect where digital rain (a rain of characters) pours down even during measurement. The cyber effect, which ticks rapidly in milliseconds, is a design that tickles the hearts of hackers, engineers, and creators. Recording lap times is also intuitive and stylish. \[3. 3D Algorithm Pomodoro Timer\] You can practice the "Pomodoro Technique," which repeats 25 minutes of concentration and 5 minutes of rest, along with the visualization of a sorting algorithm (shell sort) in 3D space. During concentration time (Work Mode), 100 3D bars arranged in a circle emit cyan neon light while being beautifully sorted in ascending order. During rest time, they are sorted in descending order with a calming green glow. The movement of the algorithm, perfectly synchronized with the passage of time, visually optimizes your work rhythm. \[4. 2D Sort Grid Custom Timer\] A general-purpose countdown timer that is useful in all situations, such as cooking, training, and presentation practice. As the timer progresses, a grid consisting of 10x10 (100 total) color cells is gradually sorted, and you can enjoy watching the scattered colors align into a beautiful gradient. The set time can be freely customized. Experience time management that goes beyond simple numerical countdowns and is visually pleasing. \[5. Platonic Solid (Regular Polyhedron) Interactive Viewer\] A special feature (polygon tool) that allows you to immerse yourself in the world of pure geometry between periods of time management. You can call up "Platonic solids," said to be the basic building blocks of the universe, into 3D space and freely rotate, enlarge, or reduce them with a single fingertip. The solids drawn with neon lines are as beautiful as holograms, and simply looking at their complex structures brings a meditative and deep refreshing effect.
Screenshots
Verdict
The clearest difference is update cadence: Preview mini at every 10 days against poly's every 3 months. poly's advantage is iOS requirement (15.1 vs 18.0). 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
Both are free to download. Preview mini sells 2 one-off in-app purchases and poly sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Preview mini ships an update every 10 days, poly every 3 months. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.
| Parameter | Preview mini | poly |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (212 ratings) — better | — |
| Positive reviews | 63.2% of reviews | — |
| Number of ratings | 212 — better | — |
| Update frequency | Every 10 days — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 103 MB | 74 MB |
| Age rating | 4+ | 4+ |
| Developer | Marian Koenig | TATSUO NAKANO |
Bugs and requests
Preview mini
Reported bugs
13 issues- Changes not saved when attaching to email
- App errors out on large PDFs and crashes
- App shuts down during photo editing, unsaved work lost
- Cannot type the letter 'y' in documents
- Payment issues with Apple, requires new credit card data
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- Pro version not activated after deduction, amount not refunded
- Errors when trying to buy the full version
- Small glitch with 'cut' upon install
- PDF cropping is not the same as Preview
- Cannot paste as shown in preview videos
- App hangs during PDF editing, lost entire work
- No difference found between free and full version after purchase
- File export only works with paid version
Requested features
27 requests- Split-screen or slide-over capability
- Export PDF as picture (JPG, etc.)
- Ability to paste one image on top of another
- Ctrl-Z for quick undo
- Straight line option for markup
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- Tiled printing option
- Export multiple edited images at once
- Dark mode option
- Advanced analytics dashboard
- Ability to add PDF to share sheet
- Copy & Paste transparent objects
- More advanced image editing options
- Slide show functionality
- Presentation modes for PDFs
- Ability to rotate and crop PDFs
- Full screen slide mode
- PDF filling functionality
- Selectable fonts
- Improve PDF cropping
- Use in extension window for quick edits
- Allow users to quickly edit inside the extension window
- Support for share dialog
- Improve light UI mode
- Allow users to do to PDF what can be done to images (rotate, cut, add text)
- Ability to change font size
- Ability to remove highlighting
- Better file management applet
poly
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Preview mini
- Preview mini PRO$4.99
- Fullversion$8.99
poly
- Remove Ads$4.99









