A poker player stands at a crossroads: a $75 one-time payment for GTO+, or a professional-grade investment of €450 to €800 in PioSolver. Both are local Windows postflop solvers; they differ in price, depth and target user. This comparison is based on official product information and verified third-party sources as of 18 October 2026, with no hands-on testing.
Why these two get compared
GTO+ and PioSolver are the two names that come up most in conversations about local postflop solving. Both are Windows desktop programs that compute Nash equilibrium strategies — a Nash equilibrium being a balance where no player can improve their result by changing strategy alone. That is the basis of “Game Theory Optimal” (GTO) play.
The comparison is not about which is “better” in a vacuum. It is about which fits your budget and your stage of study: one is the efficient entry into real solving, the other the specialist’s reference tool.
The short answer
If you are a developing player looking for an affordable, one-time way to study postflop Hold’em properly, GTO+ is the logical choice. If you are a professional or high-volume specialist who needs preflop heads-up solving, 64-core scaling, custom compiles and scripting, PioSolver is the deeper tool.
What each one is
GTO+
GTO+ is a postflop heads-up Nash-equilibrium solver for Texas Hold’em, from ‘Eighty 3′ — the same team behind Flopzilla. It is built for speed and accuracy (the official description claims “one of the fastest and accurate GTO solving algorithms available today”), with advanced tree building including multiple bet sizes, internal analysis and graphing tools, and a visual interface for navigating and editing solutions. It is deliberately focused: postflop, heads-up, Hold’em.
PioSolver
PioSolver, from PioSoft, is the more expansive professional tool. The Pro edition solves flop, turn and river spots with multiple bet sizes; the Edge edition adds heads-up preflop solving, 64-core support and custom hardware compiles. It ships with the full PioVIEWER for inspecting solutions and scripting for automation. It is commonly described as a specialist’s reference tool — powerful, and demanding.
Price
GTO+
- Main licence: $75, one-time (a second-computer licence is $40; upgrading from CREV is $50).
- One computer per licence.
- All future updates included. The purchase also includes a licence for CREV, the previous version.
PioSolver
- Pro: €450 (one-time, plus applicable taxes); Edge: €800.
- One year of updates included with either; two computers (Edge allows unlimited moves between them).
- Upgrading from Pro to Edge costs the difference.
The long-term shape of the cost is different: GTO+ includes all future updates in the one-time price, while the PioSolver purchase includes one year of updates.
Feature by feature
- Tree building and bet sizes. Both allow advanced tree building with multiple bet sizes — you can compare a 33% pot bet against a 75% one and see how the strategy shifts.
- Viewing solutions. GTO+ has internal analysis and graphing with a visual navigation interface; PioSolver includes the dedicated full PioVIEWER.
- Scripting. PioSolver (both tiers) supports scripting for automating repetitive study; GTO+ does not document scripting.
- CPU scaling. PioSolver is explicit: up to 16 cores (Pro), up to 64 (Edge). GTO+ does not publish core limits; the official claim is simply that it is among the fastest algorithms available.
- Preflop. PioSolver Edge solves heads-up preflop spots; GTO+ is postflop only.
- Licence flexibility. GTO+: one computer, updates for life. PioSolver: two computers, one year of updates.
Learning curve and workflow
Neither tool is plug-and-play — both require you to build the tree before the solver can answer anything, and a badly built tree produces a mathematically perfect answer to the wrong question.
GTO+’s visual interface is the friendlier of the two starting points, which is part of why it suits players moving up from equity tools. PioSolver is widely noted for a steep learning curve; PioSoft offsets it with documentation, video tutorials, an FAQ and an active Discord community.
Who should pick which
Pick GTO+ if:
- You want the cheapest credible entry into real postflop solving ($75, once).
- You are comfortable studying heads-up postflop spots with a visual tool.
- “Updates for life” matters as much as the features.
Pick PioSolver if:
- You need heads-up preflop solving (Edge) or deep multi-core performance.
- Scripting and custom compiles are part of your workflow.
- You are doing specialist research where the extra depth justifies €450–€800.
FAQs
Do these work on macOS or Linux? No. Both are Windows-only applications.
Do either include a trainer or pre-solved library? No — neither drills you nor ships solutions. For training, see our GTO training guide.
Which handles preflop? PioSolver Edge solves heads-up preflop spots. GTO+ is postflop-only.
How do updates work? GTO+ includes all future updates in the one-time price. PioSolver includes one year of updates with purchase.
Can I run these on a laptop? Yes, both run on Windows laptops — but solve time scales with your CPU; high core counts and strong single-thread speed are where the gains are.
Where do I go next? Read the GTO+ review, the PioSolver review, or the wider Best Poker Solvers guide — including the GTO Wizard and Simple Postflop alternatives.