Comparison

iZoomViewer vs Useful Zoom V

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

Head to head
About

iZoomViewer

Explore and discover digital media through an infinitely zoomable mosaic of photos and videos. Each pixel morphs into another image or video, creating an endless visual experience for entertainment and education.

Highlights
  • Infinite zoom mosaic
  • Explore thousands of images and videos
  • Morphing pixel transitions
  • Customizable cover images
  • Camera and gallery integration
  • Manual and auto focus controls
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iZoomViewer, an innovative & revolutionary way to explore & discover digital media. You magnify one image to reveal thousands more, endlessly. Content Interface's iZoom (Infinite Zoom) is an infinitely zoomable mosaic of photos and videos. iZoomViewer allows the user to select an iZoom from a list of many iZooms to zoom in. While zooming, each pixel is gradually morphed into another image or video which is morphed further into others, endlessly. Each iZoom contains thousands of images and photos, providing you with hours of entertainment and education. How to set custom cover image for an iZoom scene: 1) Tap the gear button to open the Setting menu. 2) Tap "Cover" to open the child menu. Then tap "Camera" to open the camera screen, or "Gallery" to selecting a photo from the device's Photo app. 3a) In the camera screen, tap anywhere to capture the photo. 3b) Tap the V tick button to set this captured photo be the cover image of the current scene. 4a) After select a photo from the device's Photo app, a photo preview screen will be opened. 4b) In the photo preview screen, tap the V tick button to set this selected photo be the cover image of the current scene. Functions of other buttons in the camera screen: - ">>" : Switch to the next camera of the current type (iPhone Pro models may have 3 back cameras). It is hidden if the current camera type has only one camera. - AF : Auto focus mode. Tap it to switch to MF mode. If it is still AF, then the current camera does not support MF mode. - MF : Manual focus mode. Tap it to switch to AF mode. Notes about the camera screen: - In captured state, these buttons will be hidden : AF/MF, ">>". - In live state, the V tick button will be hidden. - In MF mode, the tap gesture is used for setting camera focus point. So a circle button will appear for setting captured and live state of the camera.

About

Useful Zoom V

Features
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"I want to see this part larger" -- this player makes it easy. Meet a handy video player built for quickly zooming in and out on the screen. Have you ever wanted to play a video while enlarging just one part of it? This player is designed specifically for screen zooming during video playback, without complicated controls. Zoom Video Player is an iPhone / iPad video player that lets you enlarge the part of a video you want to focus on while it plays. This app does not include login/authentication features and does not provide video content. Use it by selecting a video from the file picker, your Photos library, or an SMB / URL source on your LAN. It can open local video files as well as videos on SMB network drives. You can start playback right away from the Files app, the share sheet's "Open in This App" option, or by entering an SMB path / URL. ◆ Easy zoom controls Use pinch to zoom, double tap, or the +/- buttons. Zoom instantly with the method you prefer. While zoomed in, scroll up, down, left, and right to freely follow the point you want to see. ◆ Supports many video sources Videos on your device, your Photos library, the Files app, the share sheet ("Open in This App"), and even SMB network drives on your LAN. Play quickly without worrying about where the file is stored. ◆ SMB network playback Supports automatic server search, shared folder browsing, and saved authentication information. Stream videos directly from a NAS or PC without transferring them first. ◆ Flexible seek controls Jump forward or backward by 10 / 30 / 60 seconds with one tap. Move quickly to the scene you want to check. ◆ Picture in Picture support For supported local videos and web videos, keep playback going in a small window while using other apps. ◆ High playback compatibility The playback engine uses VLC (MobileVLCKit). It provides stable playback for a wide range of video formats and also supports local .movpkg files. Main features - Zoom with pinch gestures, double tap, and + / - buttons - Move up, down, left, and right while zoomed in - 10 / 30 / 60-second fast-forward and rewind - Supports the Files app, share sheet, local video files, and Photos library - Search SMB servers, browse shared folders, and play network videos - Save SMB authentication information - Supports local .movpkg files - Supports Picture in Picture for compatible local and web videos Great for - Checking details in security camera footage - Enlarging slides or whiteboards in online lectures - Reviewing sports form and replay analysis - Enjoying details in drone footage or landscape videos - Browsing a NAS video library directly from iPhone / iPad Download it and start using it right away. The playback engine uses VLC (MobileVLCKit / LGPL). It is useful not only for everyday video playback, but also when you want to enlarge subtitles or small details, or check part of surveillance footage or lecture videos. It also works well as an everyday video player. It is free, so feel free to try it.

Screenshots

iZoomViewer4 screens
Useful Zoom V3 screens

Verdict

The call

The clearest difference is in-app purchases: iZoomViewer at none against Useful Zoom V's 1. iZoomViewer also leads on ads (none vs shown) and device support (5 vs 3). Useful Zoom V's advantage is update cadence (every 3 days vs monthly). On price and iOS requirement 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. Useful Zoom V sells 1 one-off in-app purchase. iZoomViewer asks for nothing beyond the download.

UpkeepUpdate frequency

iZoomViewer ships an update monthly, Useful Zoom V every 3 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
iZoomViewer versus Useful Zoom V: the parameters behind the verdict, then further details
ParameteriZoomViewerUseful Zoom V
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings1 — better—
Update frequencyMonthlyEvery 3 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod, Mac, Apple TV — betteriPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size127 MB97 MB
Age rating4+4+
DeveloperContent Interface CorporationKatagiri Kikaku Corporation

In-app purchases

None

iZoomViewer

No in-app purchases

1 purchases

Useful Zoom V

One-time1
  • Remove Ads$5.99

Questions

Is iZoomViewer free?
iZoomViewer is free to download, with no in-app purchases.
Is Useful Zoom V free?
Useful Zoom V is free to download, with in-app purchases available.
Do iZoomViewer or Useful Zoom V have ads?
Useful Zoom V shows ads; iZoomViewer does not.
Which is updated more often, iZoomViewer or Useful Zoom V?
iZoomViewer ships an update monthly, and Useful Zoom V every 3 days. Most recently, iZoomViewer was updated on November 3, 2026 and Useful Zoom V on October 31, 2026.

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