Android native version of Mantium Wallet

[GENERAL] Name and surname of main applicant

Yohann Hagneré

[GENERAL] Are you delivering this project as an individual or as an entity (whether formally incorporated or not)

Entity (Incorporated)

[GENERAL] Co proposers and Additional applicants

Marc Bouthong

Damien Matabon

[GENERAL] Requested funds in ada

550000

[GENERAL] Please specify how many months you expect your project to last (from 2-12 months)

12

[GENERAL] Please indicate if your proposal has been auto-translated into English from another language.

Yes

[GENERAL] Summarize your solution to the problem (200-character limit including spaces)

By developing the native version of Mantium Wallet for Android we aim to deliver the easiest and best performing wallet, designed with a customer-first mindset to onboard newcomers into the ecosystem.

[GENERAL] Does your project have any dependencies on other organizations, technical or otherwise?

Yes

[GENERAL] If YES, please describe what the dependency is and why you believe it is essential for your project’s delivery. If NO, please write “No dependencies.”

BlockFrost.io => All cardano interactions (read / send / receive) related to the blockchain.

IPFS.tech => NFTs.

Emurgo => Cardano Serialization lib

[GENERAL] Will your project’s output/s be fully open source?

Yes

[GENERAL] Please provide here more information on the open source status of your project outputs

We intend to make the project fully open-source, but we're still deciding on the specific type of license to use.

 

Considering the expected complexity of our app's codebase (the iOS version of Mantium has around 89,000 lines of code), releasing the entire source code in its current form might not be as helpful as one might think.

But on the other hand, we really value what open-source can bring to the developer community, so we think that a more targeted approach, similar to what we intend to do with our iOS code might be a good solution. The plan would be to extract some key parts of the code in a repository of their own under MIT license, by breaking them down into clear, reusable components, while retaining the whole project itself open-sourced but under another kind of licence.

We believe that this modular approach would provide a much more practical and valuable resource for developers, allowing them to easily find and pick specific parts of our code for their own needs.

Our goal is to make a meaningful contribution to the ecosystem all while handling the complexity of a large-scale project like our mobile wallet.

[SOLUTION] Please describe your proposed solution.

Our solution is to create a native Android version of our already existing iOS wallet Mantium.

It will be meticulously craft for Android devices taking into account the specificities and features of the operating system.

Here's an overview of which features will be present day one in the wallet:

• Wallet creation.
• Wallet import.
• Multi-wallet management
• Mainnet & Testnet network
• Biometric security
• Local cryptographic data security
• Transactions with ADA & native assets (tokens / NFTs)
• Transactions analysis by assets and known Dapps. 
• Support NFTs
• Support Tokens
• Support $handle (ADA Handle)
• Beginner friendly UI/UX
• Staking / Rewards
• NFTs creation
• NFTs collection creation
• Multi-languages (EN, FR, TH, CN, JP, RU, IN, ML, ID, KR) 
• Multi-currencies (EUR, USD, Pound, Won, THB, Rupee, Ruble, SGD, HKD, Yen, Yuan...)
• Push Notifications
• Educative chat bot (AI optimized for the Cardano ecosystem)
• Mobile DApps Connector.

https://youtu.be/90puY6Wirc4

https://youtu.be/1sktDhYJK4Y

[IMPACT] Please define the positive impact your project will have on the wider Cardano community.

The majority of people around the world, especially in Asia & Africa, are mobile users only and spend most of their time on their smartphone.

A top-notch version of a wallet for Cardano is absolutely critical and to achieve that kind of result a native version is always recommended.

Native versions offer performance, fluidity, security, and full responsiveness that cross-platform and web-port options cannot provide.

Currently, most of Cardano's mobile wallets lack features, responsiveness, ease-of-use, and overall quality in their UI/UX, especially when compared to wallets from other blockchains.

Another significant issue is that most wallets for Cardano are not really designed for the average consumer, but rather for 'technophiles'. 

Our iOS version already takes full advantage of the devices' native performance and offers the best in UI/UX, features, and user-friendliness, enabling non-tech-savvy users to quickly find their way and navigate the ecosystem.

We aim to bring to the same quality for Android users.

[CAPABILITY & FEASIBILITY] What is your capability to deliver your project with high levels of trust and accountability? How do you intend to validate if your approach is feasible?

Mantium Wallet has been operational on the AppStore for iPhone and iPad since January 2023.

The exact same team behind the iOS version will be in charge of the development of Mantium for Android.

Our team members consist of at least 3 iOS & Android mobile senior developers, with between 12 to 15 years experience in native mobile app development including expertise in Swift, SwiftUI, Java, Kotlin. 

Our technical expertise is also backed by a substantial portfolio of over 200 mobile applications developed for major international clients across various sectors (TV, Books, food delivery, insurance, AI, medical...).

Given our growing expertise in Cardano over the course of this year, we expect to produce an Android version that is at least equal or even superior of the current version for iOS in terms of quality & features.

There is no roadblock ahead for this project.

[Project Milestones] What are the key milestones you need to achieve in order to complete your project successfully?

Input:

1) Writing a documents specifications.

2) Design main screens.

Output:

-> GitHub doc with all specifications.

-> Main screens on Android app.

Input:

Coding of all graphical interfaces and the navigation system, in order to obtain a functional mock-up as close as possible to the final version with "fake data". 

Around 60 screens to code in XML

Output:

-> Video of Android mobile application interface and navigation workflow.

Input:

4) Development of the application engine.

5) Connection of the engine with the graphic interfaces.

Around 20 business logic to write. This millestone is a big part of the project.

OutPut:

-> Videos demonstration of major business logic

• Create account
• Import Account
• Show transactions
• Send Ada
• Show NFTs collection
• Mint a new NFT

Input:

6) Writing of test scenari for each functionality => Testing & Debugging

7) Application put online for beta-testers => Testing & Debugging

8) Follow-up on feedback, corrections, improvements and re-tests.

Output:

-> Mobile App APK for Beta testing.

Input:

9) Launch on PlayStore. 

10) Follow-up users feedback and bugs fix.

Output:

-> Publish mobile Mantium Wallet app on Google PlayStore :)

[RESOURCES] Who is in the project team and what are their roles?

Yohann Hagneré

• CEO of Symbyoz and Project director
• iOS expert developer with 15 years of experiences on mobile and 22 years on Web dev.
• https://www.linkedin.com/in/yohann-hagnere/

Marc Bounthong

• Project manager for this project.
• iOS and Flutter developer with 15 years of experience.
• https://www.linkedin.com/in/mbounth/

Maxime Filippi

• Lead Android developer for this project.
• iOS and Android senior developer with 12 years of experience
• https://www.linkedin.com/in/maxime-f-88b90548/
• https://github.com/MaximeFILIPPI

Damien Matabon

• Server administrator & support dev for javascript/Rust development.
• Developer Web senior with 23 years of experience
• AWS server architect and administrator.
• https://www.linkedin.com/in/damienmatabon/

Must be recruit :

• Marketing and communication manager (community manager)

[BUDGET & COSTS] Please provide a cost breakdown of the proposed work and resources.

The budget is based on the time we spent on the development of the Mantium Wallet for iOS and taking into account the specificities of Android, on the basis of a development cost of 400 euros per day per developer.

+ Management & docs:

• Technical documentation => 5 days => 2 000 euros
• Test Scenario documentation => 5 days => 2 000 euros
• Google PlayStore account setup and submission => 1 day => 400 euros
• Project management, half day by week => 24 days => 9 600 euros
• Monthly report to the community, half day by month => 6 days => 2 400 euros.
• TOTAL = 16 400 euros.

+ Design:

• Design graphic model of the main screens => 5 days
• Design elements for PlayStore => 2 days.
• Design graphics elements for Social Networks & advertising, 1 day by month => 12 days
• TOTAL = 7 600 euros.

+ Development:

• AWS dev and production environnement setup => 5 days.
• Create all 60 screens in XML => 60 days
• Coding navigation system between screens => 20 days
• Coding App engine, 20 business logic => 100 days
• Tests and debug before launch, 3 rounds of 10 days => 30 days
• Bug fix and optimization after lunch => 20 days.
• TOTAL = 94 000 euros

+ Marketing & Communication:

• Recruitment of a digital communications specialist => 48 000 euros.
• Buy computer for Marketing/Communication => 1 000 euros
• Travel expenses to Cardano Event => 10 000 euros
• Advertising on social Network => 12 000 euros.
• TOTAL = 71 000 euros

+ Services expenses:

• AWS server cost for one year (dev and production environment) => 2 400 euros
• Blockfrost for one year => 1 000 euros
• TOTAL = 3 400 euros

TOTAL FOR THE PROJECT = 550 000 ADA (192 400 euros)

[VALUE FOR MONEY] How does the cost of the project represent value for money for the Cardano ecosystem?

In the vast majority of countries in South-East Asia, Africa and India, users don't have access to a computer, but only to a cell phone, mainly running Android. The primary interface for interaction between these millions of users and the Cardano blockchain will inevitably involve a mobile application. 

For the moment, Cardano does not have an Android wallet designed for this audience: 

• A wallet with a clear, comprehensive, multi-language and multi-currency interface.
• A wallet enabling everyone to mint NFTs simply, quickly and securely, for a wide range of uses yet to be invented.
• A wallet in native language, performing a maximum of operations locally on the device, thus limiting the network resources required. 
• A Wallet that operates partially offline, offering, for example, the possibility of viewing a past transaction or an NFT, even in an off-network zone. 
• A mobile wallet capable of connecting to Dapps. 

For Cardano, Mantium Wallet is a showcase for blockchain and its uses today and, above all, tomorrow. And this 1.0 version of the Wallet is just the tip of the iceberg. Our aim is to rapidly enrich it afterwards, to bring new functionalities and increase usage tenfold, for merchants, students, business owners...

In this project, nearly 40% of the costs are linked to marketing and communication with a new target audience to bring to Cardano.

What's more, once the Wallet is finished, as we're starting to do with the iOS version, we intend to extract a multitude of libraries accompanied by demo projects, to help Android developers who want to build DApps on Cardano, without having to waste time on the time-consuming "Learning the blockchain" part.

[IMPORTANT NOTE] The Applicant agrees to Fund Rules and also that data in the submission form and other data provided by the project team during the course of the project will be publicly available.

I Accept