# Collection, App Downloads, and App Traffic Limits **URL:** \ **Category:** Get Help\ **Created:** [October 29, 2021, 9:40pm UTC](https://forum.adalo.com/t/collection-app-downloads-and-app-traffic-limits/19074 "2021-10-29T21:40:09Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![ITWill](https://avatars.discourse-cdn.com/v4/letter/i/e79b87/32.png) [@ITWill](https://forum.adalo.com/u/ITWill)\ **Post date:** [October 29, 2021, 9:40pm UTC](https://forum.adalo.com/t/collection-app-downloads-and-app-traffic-limits/19074/1 "2021-10-29T21:40:09Z")
I am developing a mobile app for a client and giving Adalo a try. I have a few questions. Is there any limits on (1) number of collections, (2) number of rows within a collection, (3) number of app downloads, and (4) app data traffic? The app is going to have less than 50 screens, 10 collections, and about 1,000 rows per collections except one. That one collection is going to be used for usage report to record the date and time, user, and screen that they were at. It is going to have 20,000 - 50,000 rows per year. Keeping 2 years of data, the collection would be about 40,000 - 100,000 rows. Will that cause any performance issue? And on Adalo, is there a way to auto purge rows based on date? Thank you, ---
**Author:** ![Yongki](https://avatars.discourse-cdn.com/v4/letter/y/7c8e57/32.png) [@Yongki](https://forum.adalo.com/u/Yongki)\ **Post date:** [October 29, 2021, 11:39pm UTC](https://forum.adalo.com/t/collection-app-downloads-and-app-traffic-limits/19074/2 "2021-10-29T23:39:09Z")
Hi, I have try asking those questions, hopefully we can get answers here in real life examples, not claim. > [@Scaling Up: Prioritizing Performance on Adalo](https://forum.adalo.com/t/scaling-up-prioritizing-performance-on-adalo/5492/73): > > I have questions regarding performance, and hopefully answered after improvements. What is the delay cost in terms of seconds when an app runs in best connected network at the nearest possible cloud server using normal browser or popular smartphone ? This is needed to calculate how much further cost and delay in real world app which is skewed to internet connection delays or client’s browser delays or mobile’s users delays. Showing custom list of collection that have 1000 records with filter… My experience has just reach almost 5k records, without index, it takes around 15 seconds to filter data, I use paging, but after getting indexed it is around 7 seconds. If your collection can be distributed to more collections then it will be one of the workarounds. But like others have said, focus on getting the MVP running first, get more tractions as much as possible then worry about other things later. If you are not building for MVP and already have certain customers, you might want to go ahead with more firmed solution. ---
**Author:** ![golivrob](https://avatars.discourse-cdn.com/v4/letter/g/b9bd4f/32.png) [@golivrob](https://forum.adalo.com/u/golivrob)\ **Post date:** [October 30, 2021, 7:01am UTC](https://forum.adalo.com/t/collection-app-downloads-and-app-traffic-limits/19074/3 "2021-10-30T07:01:55Z")
I don’t have the experience but how about using an external database? Maybe it’ll be faster than adalo system 🤔 Just sharing a thought ---
**Author:** ![Erik](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.adalo.com/erik/32/7849_2.png) [@Erik](https://forum.adalo.com/u/Erik)\ **Post date:** [October 30, 2021, 11:43am UTC](https://forum.adalo.com/t/collection-app-downloads-and-app-traffic-limits/19074/4 "2021-10-30T11:43:46Z")
There’s really a balance of how serious you are here. To be frank, almost no apps last two years. So planning on that probably isn’t the best place to start. My recommendation is to start on Adalo, if you make it past 6 months, then migrate to external collections. If you’re really serious about this and want to go through the time investment / learning curve, Adalo works with external collections well as a front-end. We personally use Supbase for some apps that have too much data or require logic not available in Adalo. As a guess, I’d say it’ll take 2-3x longer to build using external collections, so pick your poison. ---
**Author:** ![ITWill](https://avatars.discourse-cdn.com/v4/letter/i/e79b87/32.png) [@ITWill](https://forum.adalo.com/u/ITWill)\ **Post date:** [October 31, 2021, 3:46am UTC](https://forum.adalo.com/t/collection-app-downloads-and-app-traffic-limits/19074/6 "2021-10-31T03:46:55Z")
Thanks everyone’s inputs! My client already has an app. Only has about 1000+ downloads. It is an industry specific app. Most of his traffic is coming from his website. My client’s app is 3+ years old. The app is very simply. Basically it is running as a hub. It allows users to locate industry specific information. 90% of the information are URL links. The current app opens the URL with a browser. With Adalo I can keep users within the app using the Web View component. Once my client get the new mobile app going, he would like to move his website to Adalo’s Web App platform also. So the collections can be shared between the Web and App especially the usage data. I am trying to keep everything within Adalo to make it simply. But if 6 months past and I have to look for migrating to an external collections, I am fine with that. I just want to make sure the max # of rows per collection won’t be a problem for the usage data. I don’t want to reach its limit within a few months. Thank you everyone, ---
**Author:** ![Yongki](https://avatars.discourse-cdn.com/v4/letter/y/7c8e57/32.png) [@Yongki](https://forum.adalo.com/u/Yongki)\ **Post date:** [October 31, 2021, 4:24am UTC](https://forum.adalo.com/t/collection-app-downloads-and-app-traffic-limits/19074/7 "2021-10-31T04:24:10Z")
I would use Adalo for this use case. Basically this is a directory app. ---
**Author:** ![ITWill](https://avatars.discourse-cdn.com/v4/letter/i/e79b87/32.png) [@ITWill](https://forum.adalo.com/u/ITWill)\ **Post date:** [November 1, 2021, 1:14pm UTC](https://forum.adalo.com/t/collection-app-downloads-and-app-traffic-limits/19074/8 "2021-11-01T13:14:58Z")
Correct. Directory is 90% of its function. ---
**Author:** ![Victor](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.adalo.com/victor/32/2054_2.png) [@Victor](https://forum.adalo.com/u/Victor)\ **Post date:** [November 2, 2021, 1:56pm UTC](https://forum.adalo.com/t/collection-app-downloads-and-app-traffic-limits/19074/9 "2021-11-02T13:56:45Z")
Hi @ITWill, As for me, ~1000 records in several collections shouldn’t be a problem for Adalo, especially if you’re not going to display them all at once. For the collection with 50K rows - I’d suggest “offloading” it to external DB from the very beginning. In my experience it is difficult to handle this amount of data in Adalo at the moment (I’m not saying it’s not possible - I’m saying you might have glitches in some unexpected places). There are few topics reg. performance worth reading: > [@Do’s and Don’ts for app speed](https://forum.adalo.com/t/do-s-and-don-ts-for-app-speed/13342): > > I’ve heard a few people mention speed and page load times as a concern. Was curious if any of the veterans had advice on ways to make sure my app is fast! What are some best practices to implement when designing with page load speed in mind? What are some pitfalls to avoid or the usual suspects when it comes to slow speed? Example thoughts: Screens: Is it better to have more screens and less data/filtering per screen? For example… should I have different pages for different users instead o… [Performance updates](https://forum.adalo.com/t/performance-updates/18616) - the advice by @iAppsNi is very useful. One final note - app speed and performance doesn’t depend solely on the backend (Adalo servers), it also heavily depends on the app itself. If you try to load 10K items at one time - I guess any no-code or full-code application will not be fast to do it 🙂 Hope this helps. Best regards, Victor. ---
**Author:** ![ITWill](https://avatars.discourse-cdn.com/v4/letter/i/e79b87/32.png) [@ITWill](https://forum.adalo.com/u/ITWill)\ **Post date:** [November 3, 2021, 1:55pm UTC](https://forum.adalo.com/t/collection-app-downloads-and-app-traffic-limits/19074/10 "2021-11-03T13:55:40Z")
Thanks everyone’s inputs on collections! I will look into external DB. Does anyone know if there is any limitations on number of app downloads and traffic on Adalo? Thanks, ---
**Author:** ![Erik](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.adalo.com/erik/32/7849_2.png) [@Erik](https://forum.adalo.com/u/Erik)\ **Post date:** [November 4, 2021, 9:00am UTC](https://forum.adalo.com/t/collection-app-downloads-and-app-traffic-limits/19074/11 "2021-11-04T09:00:31Z")
There are no limitations for this. There are several apps with +10k users and one with +100k/ ---
**Author:** ![ITWill](https://avatars.discourse-cdn.com/v4/letter/i/e79b87/32.png) [@ITWill](https://forum.adalo.com/u/ITWill)\ **Post date:** [November 4, 2021, 12:48pm UTC](https://forum.adalo.com/t/collection-app-downloads-and-app-traffic-limits/19074/12 "2021-11-04T12:48:58Z")
That’s awesome. Thank you, ---
**Author:** ![system](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.adalo.com/system/32/40401_2.png) [@system](https://forum.adalo.com/u/system)\ **Post date:** [November 14, 2021, 12:49pm UTC](https://forum.adalo.com/t/collection-app-downloads-and-app-traffic-limits/19074/13 "2021-11-14T12:49:02Z")
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