PROTO
By PROTO
v1.52.016.8 MB1,039+
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Before you install
- When Android refuses the install, it is the unknown-sources guard doing it. Grant this app permission in Settings, then confirm the install when the prompt comes back.
- An "incompatible version" message usually means the build was compiled for the older ARMv7 processors that recent phones no longer accept. Look for the ARM64 (ARMv8) build of the same version instead.
Download FAQs
What changes in this PROTO build?
This build carries the Premium Unlocked modification label. PROTO still includes its real-time circuit simulation, component controls, logic tools, sensor inputs, and JavaScript support.
Can I change circuit values while PROTO is running?
Yes. PROTO lets you change a component value while the circuit is active. The circuit response is shown immediately without stopping the simulation.
Which phone sensors can PROTO use as circuit inputs?
PROTO can use the phone's light sensor, accelerometer, and gyroscope as inputs. These sensor readings can be used in the circuit you are testing.
What digital logic tools are available in PROTO?
PROTO includes basic logic gates, Flip-flops, NAND gates, NOR gates, 7400 TTL parts, and 4000 CMOS parts. You can use them for digital systems such as counters and seven-segment decoders.
What Android version does PROTO require?
PROTO requires Android 7.0 or later as a minimum requirement. The build file size is 16.8 MB.
Nothing happens when I tap download
Refresh the page and start again — each link is signed for one visit and stops working after that. If it keeps failing, the file is probably being swapped for a newer build; give it a few minutes.
Android says "App not installed"
Usually there is already a copy of the same app on the phone, signed by someone else. Remove that copy first, then install this file — and back up anything you care about inside the app beforehand, because uninstalling wipes it.
