Art Tools vs FP viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Art Tools
This app helps artists plan their compositions and analyze subjects before painting. It allows you to import photos, apply grids, adjust values, and manipulate images to achieve the desired proportions and layout for your artwork.
- Import photos or use camera
- Apply various grids (e.g., golden ratio)
- Adjust image values and color
- Resize, rotate, and move photo
- Value checker tool
- Save and email projects
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Are you ever in such a hurry to get started painting that you forget to design your canvas or analyze your subject matter? "Take time to save time." Use Accurasee Art Tools to get your composition and your proportions right from the start. 1. Take a photo of desired subject. Or choose reference from the camera roll. 2. Choose the window opening to match your canvas 3. Choose from a selection of grids including the golden ratio or use no grid at all. 4. Alter size relationships, change value, color or thickness of frame and grid. 5. Using 2 finger method, enlarge, shrink, rotate and move your photo for desired compositional effect. 6. Quickly change photo to B/W and color 7. Use the value checker tool to check for proper values. 8. Save and store your project for future reference or email to yourself. We hope that you enjoy Art Tools. If you like Art Tools, please give us a review and share it with your friends. We'd really appreciate any feedback you might have. Thanks and keep drawing!
FP viewer
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This application for confirmation of feature matching. The application has AKAZE, ORB, and BRISK feature extraction methods. You can use it in a lecture.
Screenshots
Verdict
The clearest difference is price: FP viewer at Free against Art Tools's $2.99. FP viewer also leads on in-app purchases (none vs 1). Art Tools's advantage is update cadence (every 8 months vs every 48 months) and chart position (#188 vs unranked). On ads 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
FP viewer is free to download; Art Tools costs $2.99 up front. Art Tools sells 1 one-off in-app purchase. FP viewer asks for nothing beyond the download.
Art Tools ships an update every 8 months, FP viewer every 48 months. The most recent releases landed on September 19, 2026 and September 16, 2026 respectively.
| Parameter | Art Tools | FP viewer |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 3.4 (253 ratings) — better | — |
| Positive reviews | 62.1% of reviews | — |
| Number of ratings | 253 — better | — |
| Update frequency | Every 8 months — better | Every 48 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #188 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 15 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Accurasee | Hiroaki SAWANO |
Bugs and requests
Art Tools
Reported bugs
20 issues- Cannot update to paid version
- Shop not open
- App abandoned by developers
- No support or help
- Bugs in updated version
Show 15 moreShow fewer
- Split view stuttery
- Difficulty seeing options
- Importing photos doesn't work
- Editing feature blank screen
- App freezes when opening photos
- App crashes when uploading photos
- App crashes when turning photos
- App crashes when saving photos
- App crashes on iPad
- App crashes on iPhone
- App crashes on iPad mini
- App needs Adobe Flash
- Buttons don't always work
- App keeps crashing
- Cannot download content
Requested features
29 requests- New app will be better
- Make grid intro clearer
- Vertical plumb lines
- Option for square paintings
- Option for horizontal paintings
Show 24 moreShow fewer
- Rotate photos by 90 degrees
- Fit to frame button
- Golden ratio harmonics
- Spiral grid
- Print project with grid
- Implement user suggestions
- Rectangular grid options
- Fibonacci curve
- Moveable grid instead of picture
- More plumb lines
- Slider for grid squares
- Comparison tool for painting progress
- Color picker
- Color scheme helper
- Update value viewer app
- Manual frame size adjustment
- Landscape option for frame
- More stable two-finger sizing
- Separate vertical/horizontal/diagonal sizing
- Support for iPad
- Fix bugs on iPad mini
- Fix bugs on iPhone
- Fix bugs on iPad
- Fix crashing when uploading/turning/saving photos
FP viewer
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Art Tools
- Art Tools Pro$2.99
FP viewer
No in-app purchases
