[BETA] Coin Watcher - open-source and privacy-oriented crypto portfolio web app

hatshepsut93

legendary

Activity: 3038

Merit: 2162

New update!

- slightly improved notifications
- support for price and value charts
- minor layout improvements

Unfortunately this version is not backwards compatible, so if the app doesn't load for you and you have visited this page in the past, you'll need to wipe your local storage for this site.

hatshepsut93

legendary

Activity: 3038

Merit: 2162

New update!

Now, instead of setting only two currencies - main and second ones, you can select as much currencies from the list of available currencies (supported by coingecko API). This should be helpful for users who use multiple currencies in their life, and since coingecko's API also provides data against cryptocurrencies, you can display price in them to compare how well your portfolio performs compared to them. Best example is viewing price of altcoins in both fiat and Bitcoin to see how they perform compared to Bitcoin.

hatshepsut93

legendary

Activity: 3038

Merit: 2162

Quote from: serhanni on May 23, 2019, 03:25:57 PM

Good web app, thanks for sharing the source code. Is there any possibility to order coins by volume on suggestion when adding a coin? For example to adding Bitcoin you need to type up to "bitco"

It looks like there is a small bug in 60 days data for Bitcoin. App shows +$7.327,35 increase or am I misunderstood?

Hi, thanks for your feedback! There's indeed a bug with percentage math, I'll be working on fixing it soon, apologies for inconvenience.

Theoretically ordering by volume is possible, but to keep the app lightweight and fast for mobile I'm downloading only the list of all suported coins without any market data or other data - to order suggestions by volume I'd need to either predownload all market data and keep it synced, which would be bad for performance and data usage, or dynamically load it when someone types into form, which would create a lag while the data for hundreds of coins is loaded, which will happen multiple times as more letters are typed.

serhanni

full member

Activity: 686

Merit: 100

Good web app, thanks for sharing the source code. Is there any possibility to order coins by volume on suggestion when adding a coin? For example to adding Bitcoin you need to type up to "bitco"

It looks like there is a small bug in 60 days data for Bitcoin. App shows +$7.327,35 increase or am I misunderstood?

hatshepsut93

legendary

Activity: 3038

Merit: 2162

I have my app open in a tab all the time, and now that we see some very active price movements, it really shines thanks to the price alert feature that I've recently implemented, it notifies me about all the movements higher than 1%, so I don't have to check the price compulsively, fearing that I'll miss some big price swings, I'm always getting push notifications without any problems. It's also nice to see my total value, which increased by a lot as I'm hodling, though sadly I didn't have time recently to implement charting yet.

buwaytress

legendary

Activity: 3010

Merit: 3724

Join the world-leading crypto sportsbook NOW!

Quote from: hatshepsut93 on April 14, 2019, 02:01:03 AM

Well, like I've said, you already can select two currencies out of 54 to display prices on both main and individual pages, I can rework it a bit and allow users select as much currencies out of those 54 as they like. I think this is more elegant than creating additional UI page for currency comparisons, or doing it inside coin details pages.

Also, afaik congecko doesn't provide market data for specific exchanges, unlike other apps, so my app is not very suitable for pro trading. It's more of "I wanna know how much my coins are worth today", a good alternative to constantly going to coinmarketcap to check the price.

I know, and that's already great, thank you! I exactly want to use this app for "I want to know how much my coins are worth right now" but in differenct currencies. I don't need it to plug into Bisq or Localbitcoins, because anyway those are P2P and prices are set by traders (therefore, I need to know what price to set to stay competitive and attractive). I imagine others would have the same requirement, I've actually asked other traders and they're kind of like me, manually checking prices of all markets before deciding where to sell. So basically, we're all quite "manual" in that way.

Maybe a suggestion is to allow to add a duplicate coin. e.g. If I want to add a second BTC, it won't let me.

hatshepsut93

legendary

Activity: 3038

Merit: 2162

Quote from: buwaytress on April 13, 2019, 05:13:18 AM

Quote from: hatshepsut93 on April 12, 2019, 06:06:52 PM

Although, I'm not sure if I fully understand you here, by comparison do you mean just displaying more currencies at the same time (currently you can choose 2 currencies) or something else?

Yes, for example, I trade on Localbitcoins or Bisq, generally have a small offer always open at high rates, but also every couple of weeks or so I have a periodical sell where I need to close out fairly quickly. I can trade in 3 currencies ATM, possibly more but the hassle of always checking exchange rates prevents that.

So for example, I could sell at USD/EUR/JPY, if you could have on 1 lightweight page : BTC in those three, ETH in those three, LTC in those three.

There are options to do that but they're all pretty clunky or too manual. I don't mind setting up 1 ticker, to choose BTC and then 3 different currencies to show in. Am

Well, like I've said, you already can select two currencies out of 54 to display prices on both main and individual pages, I can rework it a bit and allow users select as much currencies out of those 54 as they like. I think this is more elegant than creating additional UI page for currency comparisons, or doing it inside coin details pages.

Also, afaik congecko doesn't provide market data for specific exchanges, unlike other apps, so my app is not very suitable for pro trading. It's more of "I wanna know how much my coins are worth today", a good alternative to constantly going to coinmarketcap to check the price.

buwaytress

legendary

Activity: 3010

Merit: 3724

Join the world-leading crypto sportsbook NOW!

Quote from: hatshepsut93 on April 12, 2019, 06:06:52 PM

Although, I'm not sure if I fully understand you here, by comparison do you mean just displaying more currencies at the same time (currently you can choose 2 currencies) or something else?

Yes, for example, I trade on Localbitcoins or Bisq, generally have a small offer always open at high rates, but also every couple of weeks or so I have a periodical sell where I need to close out fairly quickly. I can trade in 3 currencies ATM, possibly more but the hassle of always checking exchange rates prevents that.

So for example, I could sell at USD/EUR/JPY, if you could have on 1 lightweight page : BTC in those three, ETH in those three, LTC in those three.

There are options to do that but they're all pretty clunky or too manual. I don't mind setting up 1 ticker, to choose BTC and then 3 different currencies to show in. Am

hatshepsut93

legendary

Activity: 3038

Merit: 2162

Quote from: buwaytress on April 12, 2019, 05:07:50 AM

Lightweight and practically instant, I'm bookmarking just for comparison especially because I'm trading on 3 different currencies on LBC, so the very quick reference from coingecko's handy. For this specific purpose, the ability to add several currencies at once for instant comparison would be great... e.g. BTC at USD, EURO and say, JPY . Then a p2p trader like me could immediately see which market gives me best value.

Yeah, the app is meant to be simple and very fast, in opposite to apps like Blockfolio or Delta that are very clunky and often slow.
I could add currency comparison, but later, when I'll rework coin details interface again. Although, I'm not sure if I fully understand you here, by comparison do you mean just displaying more currencies at the same time (currently you can choose 2 currencies) or something else?

Quote from: buwaytress on April 12, 2019, 05:07:50 AM

Charting's not especially useful for me, but would be great to track such things like LoyceV's rollercoaster I'm participating in.

Charting is the next thing I'll be working on.

buwaytress

legendary

Activity: 3010

Merit: 3724

Join the world-leading crypto sportsbook NOW!

Nice app hashe! Wish I had merit to give.

Lightweight and practically instant, I'm bookmarking just for comparison especially because I'm trading on 3 different currencies on LBC, so the very quick reference from coingecko's handy. For this specific purpose, the ability to add several currencies at once for instant comparison would be great... e.g. BTC at USD, EURO and say, JPY . Then a p2p trader like me could immediately see which market gives me best value.

Charting's not especially useful for me, but would be great to track such things like LoyceV's rollercoaster I'm participating in.

navneet kaur

newbie

Activity: 16

Merit: 0

These apps enable anyone with an actual stake or potential interest in an exchange-listed digital asset, to keep tabs on their portfolios and often the marketplace at large — whether they check in hourly, daily or monthly.

hatshepsut93

legendary

Activity: 3038

Merit: 2162

I have added a new feature to my app: price alerts via push notifications. There are two types of alerts available: fixed price alerts, that will fire one time, when the price is reached, and percentage change alerts, they will fire continuously when a price change percentage higher than your target is detected in selected timeframe. For example, you can get notification every time BTC price goes up or down by 2% in an one hour period, and this alert will fire up to one time per hour.

hatshepsut93

legendary

Activity: 3038

Merit: 2162

Quote from: ankit10 on March 22, 2019, 10:46:11 PM

Looks good, How I can save edited color scheme? It doesn't work for me.
It would be good if you add BTC or ETH on the homepage and let users add other coins manually. Bit confusing for first time visitors.

You don't need to explicitly save it, it is saved automatically when you change it's value.

Quote from: Baofeng on March 22, 2019, 10:48:31 PM

So it seems to be accepting unlimited amount? I was thinking if this can possibly solve if we are going to get the max supply of every coin? I don't know if you can just hard coded it or just pull the data again from Coingecko?

I also got a 404 error earlier, I can't replicate my steps as to how I got the error but I was thinking maybe you are doing some updates on the code as you stated above.

And maybe you can include this in your pipeline:, a timer maybe on top of the left pane about the next Bitcoin and Litecoin block halving, that will be awesome!!!

Yes, users can currently enter whatever they want (non-existing coins, huge amounts, negative amounts, etc.), I don't see the reason why I shouldn't allow it. Maybe someone will find it useful, for example negative amounts can signify debt. As for halving, I don't want to clutter the interface with huge amounts of information and buttons. I've tried to use Blockfolio and delta and it feels like you need to spend a lot of minutes to just add one coin, and then when you want to find something, you again have to parse a huge number of UI elements on the screen. My philosophy is to be minimalistic and simple.

Baofeng

legendary

Activity: 2576

Merit: 1655

Ok thanks for the fixed. Grin

I also had another test run on the apps (I used to be a software tester in my past life Grin

). This time I tried to test the Amount field:

So it seems to be accepting unlimited amount? I was thinking if this can possibly solve if we are going to get the max supply of every coin? I don't know if you can just hard coded it or just pull the data again from Coingecko?

I also got a 404 error earlier, I can't replicate my steps as to how I got the error but I was thinking maybe you are doing some updates on the code as you stated above.

And maybe you can include this in your pipeline:, a timer maybe on top of the left pane about the next Bitcoin and Litecoin block halving, that will be awesome!!!

ankit10

sr. member

Activity: 952

Merit: 267

Looks good, How I can save edited color scheme? It doesn't work for me.
It would be good if you add BTC or ETH on the homepage and let users add other coins manually. Bit confusing for first time visitors.

hatshepsut93

legendary

Activity: 3038

Merit: 2162

Quote from: Baofeng on March 22, 2019, 01:13:49 AM

Thank you for the share. I did some testing on your apps and here is what I found. I added the following coins:

Bitcoin - (BTC)
Etheruem - (ETH)
Infiniverse - (INF)

However, when I try to add another token with the same symbol or ticker as Infiniverse, - (Infinitus (INF), I got an error:

But if you look at coingecko,

There are indeed two ticker symbol INF, (as you are pulling data from coingecko). Perhaps this is just a minor defect, but I guess a fix is needed.

Edit: I also run virustotal and the URL: https://tiramisu77.github.io/CoinWatcher/ is clean.

Thanks for reporting it, this is a known issue. Coin Symbols are indeed non unique, because there are many exchanges. The problem here is that my app is internally using symbols to refer to various coin objects, so it will take some time swtiching ieverything into coin id's.

Update: the issue has been fixed and will be deployed soon. Sadly, everyone's portfolio's will no longer be valid, because the format was changed, so users will see their portfolio's as empty after page refresh/visit.

Quote from: vit05 on March 21, 2019, 10:47:05 PM

Very simple and yet quite functional. I still use googleDocs for the convenience it gives me, beyond personalization. But your app is quite simple and can be a great alternative.

Glad to hear that, more features coming in the future!

Baofeng

legendary

Activity: 2576

Merit: 1655

Thank you for the share. I did some testing on your apps and here is what I found. I added the following coins:

Bitcoin - (BTC)
Etheruem - (ETH)
Infiniverse - (INF)

However, when I try to add another token with the same symbol or ticker as Infiniverse, - (Infinitus (INF), I got an error:

But if you look at coingecko,

There are indeed two ticker symbol INF, (as you are pulling data from coingecko). Perhaps this is just a minor defect, but I guess a fix is needed.

Edit: I also run virustotal and the URL: https://tiramisu77.github.io/CoinWatcher/ is clean.

vit05

hero member

Activity: 672

Merit: 526

Very simple and yet quite functional. I still use googleDocs for the convenience it gives me, beyond personalization. But your app is quite simple and can be a great alternative.

hatshepsut93

legendary

Activity: 3038

Merit: 2162

A new version has been deployed to the official page! Changes:

- Discontinued support for API's other than CoinGecko

- No more batch mode

- Layout improvements

- You can now choose 2 out of 54 currencies (a mix of crypto and fiat) for displaying prices and values!

I've decided to from now on focus building on top of CoinGecko api instead of using multiple API's. CoinGecko shown to be much more stable and feature-rich than other API's, so this will allow me to develop the app faster and with more features.

coingecko

member

Activity: 247

Merit: 40

thats really awesome to hear!
yes we want to make it as easy to use and to support apps in the ecosystem.
just feel free to drop us a line if you have any questions!

Topic: [BETA] Coin Watcher - open-source and privacy-oriented crypto portfolio web app (Read 578 times)