Memorygraph vs Image2pixel
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Memorygraph
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This app is developed and operated by ROIS-DS Center for Open Data in the Humanities (CODH). Memorygraph is a camera app that supports same-composition photography by showing the scene image semi-transparently on the viewfinder of a smartphone camera. The same-composition photography is helpful for various purposes, such as now-and-then photography, before-and-after photography, fixed-point photography, pilgrimage photography, etc., depending on how the scene images are selected. * Now-and-then photography: Comparison of past and present Select an old photo for the scene image. Same-composition photography of an old photo and a modern scene helps you grasp the changes that have occurred over a long period. Furthermore, it is an even more exciting experience when it leads to the discovery of small traces left behind from the past to the present day. * Before-and-after photography: Comparison between before and after rapid changes Select photos related to rapid changes caused by disasters for the scene image. Suppose you choose a photo taken before a disaster as the scene image. In that case, you can visualize the extent of damage caused by the disaster. Suppose you select a photo taken immediately after a disaster as the scene image. In that case, you can visualize the state of recovery from the disaster. * Fixed-point photography: Visualization of gradual changes Select a photo at a certain point in time for the scene image. Same-composition photography allows you to record gradual changes as time-lapse images, such as plants blooming and growing, buildings being completed, and scenery changing with the seasons. * Pilgrimage photography: Comparison at a specific location By registering images of scenes from your favorite content (manga, anime, movies, etc.) and applying same-composition photography at the places of the content, pilgrimage to sacred sites (content tourism) can become a more immersive experience. Furthermore, it is also possible to incorporate the difficulty of same-composition photography into a location game, similar to photo orienteering. --- There are two ways to register these scene images in the app: "My Project" and "Shared Project." * My Project The user of the app registers scene images. User can choose their favorite scenes but cannot share the photos they have taken with others in the app. * Shared Project The creator of the project registers scene images, and project participants share them. It is best for events where all participants shoot the same scene with the same composition, and the photos taken can be shared within the app. In the beginning, set your preferred image for the scene image in My Project, then carry the app to experience same-composition photography in various locations. On the other hand, various use cases have been accumulated for Shared Projects. For example, before-and-after photography has been used to plan new sightseeing tours using old photos, citizen science projects to explore the locations where old photos were taken, and workshops to discuss urban planning based on the changes in the town over time. Before-and-after photography has also been used for on-site tours and workshops to learn about disaster recovery. Currently, we are creating Shared Projects within the framework of collaborative research, but in the future, we would like to make it possible for anyone to create Shared Projects to further expand the use cases.
Image2pixel
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Image2pixel - Pixel Art Generator Transform your favorite photos into exquisite pixel art creations. Whether you're a gaming enthusiast, designer, or pixel art lover, Image2pixel helps you effortlessly create retro-style pixel art. Main Features ⢠One-Click Pixelation: Simply select a photo to instantly convert it into pixel art.⨠⢠Custom Pixel Size: Adjust pixel sizes from 2 to 16 to create different styles of pixel effects.⨠⢠Color Control: Set the number of colors, from 2 to 64, to create artwork ranging from simple to complex.⨠⢠Grayscale Mode: Switch to a black and white effect with one click to create retro-style pixel art.⨠⢠Grid Line Display: Show/hide grid lines for precise editing and viewing.⨠⢠High-Quality Export: Save high-resolution pixel art to your photo album. ⢠Fuse Bead Palettes & Pattern Export Use Cases ⢠Create retro-style pixel characters and scenes for game projects.⨠⢠Design unique social media avatars and backgrounds.⨠⢠Transform precious photos into works of art.⨠⢠Create retro-style wallpapers and decorative patterns.⨠⢠Turn photos into fun 8-bit style images. ⢠Turn photos into fun Perler Beads/Fuse Beads Pattern. Image2pixel - Effortlessly create pixel art and unleash your retro creativity!
Screenshots
Verdict
The clearest difference is price: Memorygraph at Free against Image2pixel's $1.99. Memorygraph also leads on iOS requirement (15.6 vs 17.6). Image2pixel's advantage is update cadence (every 6 days vs every 2 months). On ads, in-app purchases and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Memorygraph is free to download; Image2pixel costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Memorygraph ships an update every 2 months, Image2pixel every 6 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | Memorygraph | Image2pixel |
|---|---|---|
| Price | Free ā better | $1.99 |
| Update frequency | Every 2 months | Every 6 days ā better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod ā better | iPhone, iPad |
| Requires iOS | 15.6 ā better | 17.6 |
| Further details ā not scored | ||
| Size | 62 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Tomohiro Ikezaki | ēē„„ ä½ |
In-app purchases
Memorygraph
No in-app purchases
Image2pixel
No in-app purchases









