It ought to be different, the original circuit is designed for ±12 V power, the stripboard version is for +9 V.
I admit I didn’t take a close look at the stripboard when you posted it before. Now that I do… it’s not slightly different, it’s a lot different. The original uses two CA3080, more or less equivalent to the single LM13700, but also two TL074 quad op amps which are not present here. Nor are the transistors. In fact the whole CV current source is gone, replaced by voltage to a pot and a fixed resistor.
What’s this being used for, anyway? A guitar effect?
Without going over it in detail the PCB looks adequate. Looks like it’s designed for hand etching. As Aria points out, if you’re getting it done commercially you could do some things differently/better. But they probably would not make much operational difference.
The two connectors? Wire pads? CN1 and CN2 look kind of random… the switch for instance is wired to pins 1, 4, and 5 on one and pin 2 on the other. Which will work fine, but it doesn’t make for very neat wiring. Likewise the res pot connects to both sides. It might make for harder trace routing if these connections were to be organized more sensibly, but nothing that couldn’t be handled with a 2 sided PCB design and use of a ground plane.
I don’t know what software was used but the resistor footprint silkscreen is inconsistent — some resistors don’t show lines connecting the body to the pads. It’s nicer if all the text is oriented consistently so you don’t have some upside down relative to others. KiCad handles both of these better.
I like having both component references and values on the silkscreen especially for as simple a circuit as this, which has a fair amount of room for both. But that’s a matter of taste.
There’s also plenty of room on the board for some text identifying what the circuit is — if you have several PCBs in the same box it’s nice to be able to tell at a glance what they are! And name(s) of circuit and layout designers are always good.
Another thing that’s good: Mounting holes. Whether you intend to use them or not, having them there gives you (or others) that option.
It’ll probably work fine, unless there’s some error I overlooked. But there’s room for improvement.