Key Takeaway
Adalo builds real React Native apps, so the old "it is just a webview" myth is wrong, and Adalo 3.0 (late 2025) narrowed the Android gap. But across many locations you do not control which phones your customers and staff carry, and that is the real problem. Performance on a mixed fleet of mostly mid-range Android devices is an operational QA discipline, not a one-time optimization pass.
If your Adalo app feels great on your iPhone and sluggish on a customer's Android at one of your stores, you are not imagining it, and the usual explanation you will read online is wrong. Here is what actually happens on real devices across a multi-location user base, and how to own it.
Adalo is React Native, not a webview
A lot of older posts claim Adalo apps "run inside a webview." They do not. Adalo compiles to React Native and ships true native binaries. Why it matters: the fix for Android performance is not "escape the webview," it is understanding that your app's JavaScript runs across a huge range of hardware. The lever is device reality, not web-wrapping.
Why the iOS-versus-Android gap shows up
Apple sells a small, powerful set of devices. Android spans thousands of models, from flagships to budget phones with 2-3GB of RAM and older chips. The same build that feels instant on a recent iPhone has to run on all of them, and the React Native bridge plus JavaScript-heavy screens are simply more demanding on low-end hardware. Lists, image loading, and heavy screens are where it shows first.
What Adalo 3.0 fixed, and what it did not
Adalo 3.0 moved more work server-side, added caching and progressive list loading, and sped up image delivery substantially. That lifts the floor on every device. What it cannot do is change the phone in your customer's hand. On a three-year-old budget Android, on-device rendering of a busy screen is still the ceiling.
The multi-location problem nobody scopes: you don't pick the devices
A solo builder tests on their own phone and ships. Across locations, your users are a device matrix you did not choose, and it varies by region and by whether the users are staff or customers. "It works on my Pixel" is not QA. It is a sample size of one on the nicest phone in the building.
Building a device matrix for a real user base
Pull your own analytics and list the top 10-20 device models your users actually carry, deliberately including cheap Androids. Test on real hardware, not just emulators, because emulators hide thermal and memory behavior. Re-run it on a cadence, because your device mix drifts and every Adalo update can shift performance. This is the work most teams skip and then feel as churn.
Keeping the experience consistent per location
Every location runs the same build on uneven hardware, so the same screen can be smooth at one site and janky at another. The practical fixes that survive real devices: paginate and lazy-load lists, avoid stacking multiple lists on one screen, compress images hard, and trim hidden or conditionally-shown components that still cost render time. We cover the data side of this in outgrowing Adalo's performance across locations.
Who owns device QA when you operate across locations
This is the real question. Device testing across a mixed fleet is ongoing, not a launch checklist. Someone has to own the matrix, run it each release, and catch the low-end regression before your customers do. If no one owns it, the low-end experience quietly rots and you never see the report, only the drop-off.
Rehost operates the app for you, which includes real-device performance as part of the job, not an afterthought. We monitor how the app behaves in the field across locations and ship the fixes. Pricing starts at $950 per month, billed by monthly active users, and you own everything. See the multi-location approach or talk to us about your device mix.
FAQ
Is Adalo a webview or a real native app?
A real native app. Adalo compiles to React Native and publishes native iOS and Android binaries. The Android performance gap comes from device fragmentation and on-device rendering, not from web-wrapping.
Why is my Adalo app slow on Android but fast on iPhone?
iPhones are uniformly powerful; Android spans thousands of models, many low-end. Your app's JavaScript-driven screens are heavier on weaker hardware. Compress images, paginate lists, minimize custom components, and make sure you are on Adalo 3.0.
Did Adalo 3.0 fix the Android performance gap?
It narrowed it with a faster architecture, caching, and progressive loading. It did not eliminate it, because the slowest devices your customers carry are still the limiting factor.
How many devices should we test an Adalo app on before launch?
Cover the top 10-20 models in your own analytics, including cheap Androids, on real hardware. Then re-test each release, since your device mix and the platform both change.
Who should own device testing across our locations?
Someone accountable for it every release, in-house or an operated partner. The failure mode is treating it as a one-time check; on a mixed multi-location fleet it has to be continuous.