Cherkalka vs BlueStylus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cherkalka
This app offers a versatile toolkit for quick note-taking, image editing, and on-the-fly modifications. Seamlessly sketch or write on photos directly from your gallery or use its action extension for broader application compatibility. It's designed for efficient visual communication and creative annotation.
- Quick note creation on photos
- Integrated photo editor
- Action extension for sharing
- Drawing and erasing tools
- Customizable pencil width and color
- Store and duplicate notes
- Stylus palm touch elimination
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Three in one: the app to create notes, photo editor to alter images in Photos, action extension to make changes on the fly. Cherkalka is a great tool when in need to note quickly on a photo, just to sketch or write, all these without launching a heavy notepad. The app includes a photo editor and an action extension. The photo editor allows you to make notes on photos right from the Photos app without launching the app. The action extension gives you possibility to handle pictures from any app supporting that feature and share the results. Note: not every program able to receive the result after you press the Done button, e.g., the Photos app does not support that feature, in the case with the Photos use the photo editor. Cherkalka can: • draw and erase; • change width and color of the pencil, color of a note; • share created pictures; • utilize photos; • store created notes and duplicate them; • eliminate palm touches when you use a stylus. The full version in addition can: • resize the note; • move and rotate layers of strokes and background; • scale the current note view; • change width and color of a pencil in the photo editor and the extension; • sync notes via iCloud; • to not show the app logo on exported pictures.
BlueStylus
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BlueStylus Time and Billing app makes time and expense tracking convenient and easy through the use of your iPhone or iPad. The app is available for free for paid users of BlueStylus Time and Billing web-based software. Our powerful web and mobile platforms have supported thousands of lawyers and professionals across the country. BlueStylus product features include: • Import Standard UTMBS Codes • Professional rates customizable by matter • Invoice template selection • Exchange email and calendar sync • Timer feature available on web and mobile apps • Email invoices • Quick add time & expenses • Secure document management and sharing • Enter and assign tasks to others on your team
Screenshots
Verdict
The clearest difference is in-app purchases: BlueStylus at none against Cherkalka's 1. Cherkalka's advantage is update cadence (every 2 months vs every 26 months) and iOS requirement (8.0 vs 17.0). On price, 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
Both are free to download. Cherkalka sells 1 one-off in-app purchase. BlueStylus asks for nothing beyond the download.
Cherkalka ships an update every 2 months, BlueStylus every 26 months. The most recent releases landed on October 15, 2026 and October 4, 2026 respectively.
| Parameter | Cherkalka | BlueStylus |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (21 ratings) — better | — |
| Positive reviews | 90.3% of reviews | — |
| Number of ratings | 21 — better | — |
| Update frequency | Every 2 months — better | Every 26 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 8 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Semen Kudriavtsev | TrusteSolutions |
Bugs and requests
Cherkalka
Reported bugs
4 issues- App crashes when trying to take a photo
- Rubber/eraser doesn't delete
- Unclear how to handle some settings
- Translations are poorly made
Requested features
11 requests- Add undo and redo features
- Improve line quality for sharper lines
- Enhance color selection with smooth scrolling
- Allow notes on clear backgrounds interchangeable with PC applications
- Support vector compatible format for professional editing
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- Add more features and filters
- Implement an undo option for the last stroke
- Make it easier to restore a white background
- Save selected photo from album within the app for future modifications
- Add dark mode option
- Improve translation quality
BlueStylus
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Cherkalka
- The full version$0.99
BlueStylus
No in-app purchases









