Gnanabodhini High School. vs BlueGrays
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Gnanabodhini High School.
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App For All To provide the power of technology in the hands of Parents, Teachers and School Admin. Fees Management Simplified This app provides a solution to schools to automate their fees scheduling Exam Results Managing the scheduling of exams, publishing results and printing report could be a time-consuming task. Time-table Module provides an easy way to publish your time-table and manage teacher arrangement/substitution for absent teachers. Attendance and Leave A complete solution to automate attendance taking, attendance reporting, leave application and attendance analytics.Optional RFID Assignments / Home works Snap a picture of the blackboard or a worksheet. Write down a reminder to share. Record a rhyme. Share a link.
BlueGrays
This app provides over 160 hands-on projects for Arduino, ESP32, and Raspberry Pi Pico, complete with code, diagrams, and video guides. It helps users discover projects based on the parts they own and offers a suite of electronics tools and component guides.
- 160+ microcontroller projects
- Ready-to-upload code
- Circuit diagrams and video walkthroughs
- Project discovery based on owned parts
- 125+ component guides
- 18 electronics calculators
- Pinout maps for popular boards
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160+ Arduino, ESP32 and Raspberry Pi Pico projects, each with ready-to-upload code, a circuit diagram, the parts list and a video walkthrough. Tell BlueGrays which parts you own and it shows the projects you can build right now. Plus 125+ component guides, 18 electronics calculators and pinout maps for the boards. PROJECTS • Arduino projects, ESP32 projects and Raspberry Pi Pico projects in one place • Step-by-step guide: parts, circuit, code and testing • Wokwi simulation videos in new projects: watch the circuit run before you build it • Rate projects, save favorites and track the ones you complete WHAT CAN I BUILD WITH MY PARTS • Workshop: save the components you own, with quantities • See the projects you can build with your parts and the ones missing the fewest • Project Finder: answer a few questions and get an Arduino, ESP32 or Pico project that fits you 18 ELECTRONICS TOOLS • Resistor color code and SMD code decoder • Ohm's law, LED resistor, series/parallel resistor and voltage divider calculators • 555 timer, op-amp gain, RC time constant and battery life • Capacitor code, inductor code, series/parallel capacitors and standard values • LED voltages, transistor table and logic gates • Save your calculations and share the results PINOUT • Pin maps for Arduino, ESP32 and Raspberry Pi Pico boards • Tap a pin to see what it does and what it is good for COMPONENT CATALOG • 125+ components: sensors, modules, motors, displays and more • Specs, use cases and the projects each component appears in • Add components to your Workshop straight from their page BADGES AND LEVELS • Earn badges as you learn and reach Bronze, Silver, Gold, Platinum and Diamond tiers FOR EDUCATORS • Bulk Premium code packs of 5 and 10 for your class MORE • Blog: step-by-step electronics guides on bluegrays.com • 6 languages: English, Turkish, German, Spanish, French, Italian PREMIUM Starter projects and the basic tools are open to everyone. BlueGrays Premium unlocks all projects, the full component catalog, Workshop, every tool and the pinout maps. 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 in-app purchases: Gnanabodhini High School. at none against BlueGrays's 10. BlueGrays's advantage is update cadence (every 4 days vs every 15 months). On price, ads, device support 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
Both are free to download. BlueGrays sells 10 in-app purchases, starting at $2.99 per month. Gnanabodhini High School. asks for nothing beyond the download.
Gnanabodhini High School. ships an update every 15 months, BlueGrays every 4 days. The most recent releases landed on October 24, 2026 and November 4, 2026 respectively.
| Parameter | Gnanabodhini High School. | BlueGrays |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.2 (14 ratings) — better |
| Positive reviews | — | 64.3% of reviews |
| Number of ratings | — | 14 — better |
| Update frequency | Every 15 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 47 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | eReleGo Technologies Pvt Ltd | Yunus Emre Eke |
In-app purchases
Gnanabodhini High School.
No in-app purchases
BlueGrays
- Premium (Monthly)$2.991 Month
- Premium (Yearly)$11.991 Year
- Premium (Yearly)$19.991 Year
- Lifetime Premium · Special$49.99
- Lifetime Premium$79.99
- 50x Monthly Educator Pack$219.99
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- 5x Lifetime Educator Pack$399.99
- 10x Lifetime Educator Pack$749.99
- 50x Yearly Educator Pack$889.99
- 50x Lifetime Educator Pack$949.99






