#12 - Giveaway : 09/10/2018

There were 32 comments, however because I couldnt give prizes in last couple of weeks I am giving away 10 pro codes.

Winners :

Iain Walker
Maykon Ferreira de Souza
Davide Grasso
Dieter Boersig
Iago Silva
Brayan Gasca

Well done! You will be contacted soon on the email you registered with your comment.

Join the giveaway again!


If you didn’t win that’s ok you can try again! Every friday I’ll be giving away promotional codes to download the PRO version for free!


Comments are closed.

  1. Author
    Herbert Schiller 3 months ago

    Leave a comment here and you will be participating, check on the post details about when the winners will be announced.

    Note: Remember to use a valid email address when registering to comment as this will be the only way I will be able to contact you in case you win.

    Good Luck!

    • Douglas Anthony Caban 2 months ago

      Hi, hope all is well with you and your Family. I also hope I win the pro version :0)

    • Prasanth 2 months ago

      This powerfull app i ever used. Because no one give your app features for free but you are giving free. I am so happy for that. As a student from electronics and communication engineering i am interested in my subject because of your app. This make my time convenient. The explanation are cool to study because not complicated. I am suprised when i used your app for the first time.this comment is not for winning pro version but This comment is from my heart. Thank you.

    • Davide Grasso 2 months ago

      An essential application for hobbyists, but also for educational purposes. Fast and intuitive it simplifies life a lot, the translation in Italian is to be improved but already the idea deserves a very good judgment. I congratulate you absolutely. finally someone who thinks of us.

    • Liam 1 month ago

      Wow me encanta la app gracias por darnos está lotería :v y la verdad yo estoy comenzando en una secundaria técnica aunque no la estoy usando mucho ahora más adelante podré usarla más aunque no para copiarse si no para comprobar y compartir la app con mis compañeros del colegio

      Muchas gracias

    • Brayan Gasca 1 month ago

      La aplicación es genial! Saludos desde México

    • Philippe masucci 2 weeks ago

      Really practical application! I use it many time! Nice app, thank you so much!

  2. Dieter Boersig 3 months ago

    Perfect App !! 🙂

  3. Gioacchino 3 months ago

    Ottima app, bellissima interfaccia. Ho notato però che mancano i filtri passa banda ed elimina banda.. Rimane comunque una app stupenda

  4. Cliff 3 months ago

    Absolute timesaver to refer to
    Downloaded recently and its opened regularly
    Amazing how much you forget over 30 years

  5. Edward A Crandell 3 months ago

    Your app is very impressive. Easy to use and very informative! My question for you is how long have you been working with electronics? I love to build and repair every sort of gadget I can get ahold of. That is I love to try. I’m usually screwing something else up while attempting to fix a problem, lol. Anyhow take care!

    • Author
      Herbert Schiller 3 months ago

      Hi Edward, really appreciate your comment, I am telecommunications Engineer, working in the area for a decade now, the app started 2 years ago just as a hobby to practice programming, something I like to do, never expected it would reach so many people, and so many enthusiasts, I am quite happy to see how many people send me messages about their interest in electronics and I believe in the power of the internet and that sharing knowledge is something very important, that’s why I don’t block any content on the free version, both versions have the same content and I leave the Pro version for those who wish to support this project to keep going, because it does take a lot of time and effort to keep updated, Thanks again for your message, have a nice day!

  6. Noel 3 months ago

    It’s looking good, but not perfect yet. Under Converters/Formulas/Temperatures there is an entry: C=(F -32)x1.8 which should read C=(F -32) divided by 1.8
    (I cannot find a divide sign which works in Windows).
    Incidentally, the plural of Formula is Formulæ.

    • Author
      Herbert Schiller 3 months ago

      Really appreciate your feedback Noel, thanks a lot for pointing that out I’ll correct, the calculation itself is correct, the theory content has the mistake you pointed I’ll fix that as soon as possible, also the typo you mentioned, I’m glad to have users that can help me improve it, have a nice day 👍

  7. dare 3 months ago

    Just download the app and is a great app and great composure … keep it up .. can’t wait to get the pro app

  8. Eli 3 months ago

    This app has a lot of potential I really like the theory and the attention to detail (including safety precautions)

  9. Eli 3 months ago

    This may be a double post… I don’t see my first comment sorry if that is the case

  10. Manu 3 months ago

    Best app for electronic stuff repairing since ever!

    • Cliff 3 months ago

      Resistors in parallel kohms gives answers in Miliohms

      Still good app referred to regularly

      • Author
        Herbert Schiller 3 months ago

        Cliff would you send me via email any issues you encountered and I will investigate thank you

  11. Randy Short 3 months ago

    Thank you for all your hard work on this app and great to have all this information in one place. Keep up the great work!

  12. Tobias 2 months ago

    Really useful app!
    Thank you for all your hard work!

  13. Filipe Sampaio 2 months ago

    Great APP, very usefull!

  14. Hayaan 2 months ago

    Thank you .. best Apps 💕

  15. Samuel Alves 2 months ago

    I really love your app. This app are helping my studies in electric field. Thank you for your great job!

  16. Derek W King 2 months ago

    Very well designed app. I’m really enjoying the free version so if I win pro that will just be gravy. I’ve only been using the app for a few hours and I’m already hooked. Hope you continue providing the app because I can’t wait to see what you add next!

  17. Sergio Henrique 2 months ago

    Wow! This really cool!

    • Derek W King 2 months ago

      Love the app! I’m an electronics technician and it’s a great time saver.

  18. Samuel 2 months ago

    I really want this. This is a great app

  19. Rose 2 months ago

    Love this app

  20. Caio Magnus 2 months ago

    Your app is just perfect for me!

  21. Erwin Sabas 2 months ago

    A very powerful and helpful app! 😀

  22. Tiago 2 months ago

    Bem prático de usar, gostei muito porque pra chegar sempre na frente precisamos de rapidez e praticidade. Parabéns pelo APP! Espero ganhar a versão PRÓ.

  23. Marcio Santos 2 months ago

    Estou estudando elétrica no Senai e tenho procurado app quefenha me ajudar meu conhecimento e crescimento na área.
    Não gosto de ficar enchendo meu celular de app pois acaba atrapalhando em vez de ajudar.
    Bem agora estou numa situação complicada pois encontrei 2 app que estão sendo bem avaliados o [ Engenharia Eletrônica Calculadora Pro. e o ElectroDroid Pro.].
    Bem você oferece um ótimo preço. Mais gostaria de saber de você diretamente o porque deveria escolher o seu app e não o concorrente, sua resposta é será de grande valor pois minha escolha depende dela. E de certa forma terá um influencia no meus estudo.
    Desde já obrigado e me desculpe se acaso não fui delicado com a pergunta.

  24. Pierre 2 months ago

    Très bonne application. Vraiment pratique. Continuez comme ça. Bravo.

  25. Ronei 2 months ago

    Muito bom este aplicativo fácil de usar .

  26. Fernando Peres 2 months ago

    Cara, muito bom esse app, e estarei sempre disponível e ajudando sempre que possível, pous esse app tem tudo que precisa para ser um dos mais variados, completos,e acessível.

  27. fernando pereira araujo 2 months ago

    Gostei muito do APP, calculadora perfeitamente preparda
    Conteúdo de informação muito bem colocada
    Entre outros,eu recomendo valeu mesmo

  28. Maykon Ferreira de Souza 2 months ago

    Excelente aplicativo, me ajuda muito. Estou adorando ! Espero um dia poder ter a versão pro

  29. Paolo 2 months ago

    I hope to win a code, a really great app!!

  30. Adriano 2 months ago

    The best app I’ve found so far. Congratulations.

  31. Konstantinos 1 month ago

    Great job on the app. Totally worth it

  32. caslpik 1 month ago

    Perfecto app

  33. Naveen Yaduwanshi 1 month ago

    Hi, This app is very usefull and informative. Thanks for making it.

  34. Sérgio Santos 1 month ago

    Olá gostaria de ganhar a versao pro. Obrigado!

  35. Maximo 1 month ago

    Thank you so much for this opportunity!

  36. Nirvan 1 month ago

    Sir in pro version is there resistance range calculator

  37. Nirvan 1 month ago

    Very much nice app

  38. Henk 1 month ago

    This tools is so handy, available always at the right time, at the right spot…. as you carry it along all the time :D.
    Thanks buddy.

  39. Jens 1 month ago


    I’m starting now my first job as an electrician and hope to get the code to use the app as often I can while I need to do homework;)

  40. Eric P. 1 month ago

    You know, I’d probably just buy the pro version if I could, but it’s telling me I already have the pro version, even though it continues to show ads…

  41. Brayan Gasca 1 month ago

    Está aplicación es genial!! Gracias. SsSalud desde México

  42. Shano Gabbafreakz 1 month ago

    Great app!

  43. Iago Silva 1 month ago

    The app is very nice

  44. Thaddeus Drabick 4 weeks ago

    Am a retired 87 year old technician. You app is absolutely marvelous! Am still active especially so with nostalgic devices – and all the way to computers – data recovery-password cracking. Cannot praise your utility enough! Congratulations-well done!

  45. Philipp Berndt 4 weeks ago

    Thank you for the best app ever!

  46. Flavio 4 weeks ago

    Hey! Thank you for this wounderful & very useful app

  47. Nikola 4 weeks ago

    Im new!
    Gonna try my luck!

  48. Isaias Alves 4 weeks ago

    The most complete app for this category! Thank you!

  49. Chase 3 weeks ago

    This has helped me no end in my entry into arduino and the raspberry pi projects.

  50. Daymont 3 weeks ago

    Muy buena app quiero participar en el sorteo gasolina.de@gmail.com

  51. Jono 3 weeks ago

    Gotta try at least once.

  52. Leonardo 3 weeks ago

    Prezados boa tarde! O app conta com versão ios?
    Agradeço desde já. Obrigado.
    Leonardo Casa da Silva

  53. Denis 2 weeks ago

    I’m amazed that the app is so complete (and free), it’s very useful! Thanks.

  54. Mustafa Agbaria 2 weeks ago

    Thank you for this great app.

  55. Marcos Valenzuela 2 weeks ago

    Thank you for the app, it help me in the study on University!!

  56. Paulo 2 weeks ago

    Ganharei a versão pro, melhor app da play store!

  57. Shankar Varma 2 weeks ago

    Hey buddy I just installed your app its mind blowing but can you please update app with some tutorials like using and operating tools in pdf or video. If you do so it will grateful for every beginner.
    Thank you.

  58. Tarabas 2 weeks ago

    Hi, nice looking, useful features, but german translation may need some support 🙂
    Translating Power as Macht is much more funny as it is correct 🙂
    Want to win too, of course.

  59. Ralph Werner 2 weeks ago

    Sehr umfangreiche Applikation, sehr zu empfehlen für alle Elektroniker!
    Ruterladen und testen es lobt sich.
    Herzlichen dank an den Entwickler!

  60. Iain Walker 2 weeks ago

    Really useful, so much information in a nice format so you can find what you need in a click or two. Thanks for all the hard work

  61. Weronika 1 week ago

    Hi I hope your app give you satisfaction and you are very proud of it ! Incredible amazing and very helpful app 😉

  62. Chamoin 1 week ago

    Hello the app is Amazing and i would really like to win the pro version, it helps me a lot in my electrical engineering studies un France 😉

    • Adrian Jordan 6 days ago

      It’s a wonderful app..really amazing..congratulations!!😎👍😁


If you wish to send suggestions, report bugs, request features, or just say hi, please feel free to contact me, I always try to reply all emails I receive.


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