RoboArm vs BlueGrays
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RoboArm
Control a DIY robotic arm built from a construction kit. This educational app is designed for children aged 10 and up, as well as adults, to interact with their assembled robotic creations.
- Robotic arm control
- DIY construction kit integration
- Educational for ages 10+
- Arduino-based technology
- Interactive learning
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Mobile App for control RoboArm once it was assembled. RoboArm is DIY Robotic Arm Construction Kit based on Arduino for children from 10 years old and adults. Includes over 300 details and components. Make an order on https://roboarm.info/.
BlueGrays
Learn electronics with interactive projects, a component catalog, and personal inventory management. Start with free projects and unlock full access to Arduino, ESP32, and IoT content with a premium subscription. Gamified learning with badges and levels keeps you motivated.
- Free starter projects
- Unlimited Arduino/ESP32/IoT projects
- Detailed circuit diagrams and code
- Component catalog with specifications
- Personal inventory management
- Gamified learning with badges and levels
- Multi-language support
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Learning electronics has never been this easy and fun with BlueGrays! Start with free projects right away, and unlock all content with Premium when you're ready. Whether you're a student or a hobbyist, BlueGrays gives you everything you need. — START FOR FREE — • Begin learning electronics with curated starter projects • Explore basic components and their specifications • Try the app and see if it's right for you — EXPLORE PROJECTS (Premium) — • Unlimited access to Arduino, ESP32, ESP8266 and IoT projects • Detailed circuit diagrams, code snippets, and video tutorials for each project • See required components and add missing ones to your inventory • Rate projects and save your favorites • Track your completed projects — COMPONENT CATALOG (Premium) — • Full access to extensive electronic component database • Detailed specifications and use cases • Filter, sort, and easily find what you need • Add components directly to your inventory — MY WORKSHOP - PERSONAL INVENTORY (Premium) — • Track the components you own • Add quantities, notes, and custom names • Check for missing components before starting a project • Edit and update your inventory anytime — BADGES & LEVELS — • Earn achievement badges as you learn • Reach Bronze, Silver, Gold, Platinum, and Diamond tiers • Track your progress across categories • Stay motivated with gamified learning! — MORE FEATURES — • Push notifications for new projects • Multi-language support (TR, EN, DE, ES, FR, IT) • Favorites and completed projects list • Personal profile and progress tracking BlueGrays is built for the maker and electronics community. Download now and start your electronics journey for free! — SUBSCRIPTION INFORMATION — • BlueGrays Premium unlocks unlimited access to all projects, the full component catalog, and the My Workshop inventory feature. • Payment is charged to your Apple ID account upon confirmation of purchase. • Subscription automatically renews unless cancelled at least 24 hours before the end of the current period. • You can manage and cancel your subscription in Settings > Apple ID > Subscriptions after purchase. • Privacy Policy: https://bluegrays.com/privacy/ • Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: RoboArm at 5.0 against BlueGrays's 4.2. RoboArm also leads on in-app purchases (none vs 6) and iOS requirement (12.0 vs 15.1). BlueGrays's advantage is ratings volume (13 vs 1). 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. BlueGrays sells 6 in-app purchases, starting at $2.99 per month. RoboArm asks for nothing beyond the download.
RoboArm holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: BlueGrays has 13 ratings behind it against 1, so its average is the more settled of the two.
| Parameter | RoboArm | BlueGrays |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.2 (13 ratings) |
| Positive reviews | — | 64.3% of reviews |
| Number of ratings | 1 | 13 — better |
| Update frequency | — | Every 6 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 11 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | Igor Erostenko | Yunus Emre Eke |
Customer experience
RoboArm
BlueGrays
In-app purchases
RoboArm
No in-app purchases
BlueGrays
- Premium (Monthly)$2.991 Month
- Premium (Yearly)$11.991 Year
- 5x Aylık Eğitimci Paketi$12.99
- 10x Aylık Eğitimci Paketi$23.99
- 5x Yıllık Eğitimci Paketi$53.99
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- 10x Yıllık Eğitimci Paketi$101.99
Questions
Is RoboArm free?
Is BlueGrays free?
Which has better reviews, RoboArm or BlueGrays?
Do RoboArm or BlueGrays have ads?
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