Simulation Tools
Not ranked right now: we could read four of its nine products in full, and a ranking needs five.
The five we could not read are still named below, each with the reason; this is not a verdict on them.
We check this again by 26 December 2026.Last checked on 11 November 2026.
To see what we read, what we leave unread and what brings a ranking back, read Why some categories are not ranked right now.
How to judge one yourself
The questions we ask of every product here, and how much each counts when we rank. They work on any product, listed here or not.
- 30%counts for 30% of the weight
Does it run your exact transaction before you sign, or only check a list of known-bad addresses?
Simulation depth vs. blocklist dependence
- 25%counts for 25% of the weight
Will the product still exist and be maintained in 18 months?
Vendor survival and continuity risk
- 25%counts for 25% of the weight
Does it publish how often it misses, and what happens when it does?
Verifiable performance and what happens when it misses
- 20%counts for 20% of the weight
Can you see the price without a sales call, and is it the real total cost?
Published price and true total cost
What we track, A to Z
In alphabetical order, not in any order of merit.
- GoPlus Security
Read in full on 22 October 2026
- Kerberus (Pocket Universe)
Read in full on 22 October 2026
- Scam Sniffer
Read in full on 22 October 2026
- Tenderly
Read in full on 22 October 2026
Not read this time
- BlockaidIts page
Not read since 11 November 2026: Blockaid's terms bar robots and spiders that access its website
We link its site again once we can read it.
- MetaMask Transaction ShieldIts page
Not read since 11 November 2026: MetaMask's terms bar scraping data from its sites unless a plan permits it
We link its site again once we can read it.
- PhantomIts page
Not read since 11 November 2026: Phantom's terms bar scraping data from its app or site
We link its site again once we can read it.
- Rabby WalletIts page
Not read since 11 November 2026: Rabby's terms bar scraping data unless a paid plan permits it
We link its site again once we can read it.
- WebacyIts page
Not read since 11 November 2026: Webacy's terms bar navigating its service with tools other than its own
We link its site again once we can read it.
Why, in full
We compare transaction simulation tools on four things. On 11 November 2026 we could not read five of the nine in full: the terms of Blockaid, MetaMask Transaction Shield, Phantom, Rabby Wallet and Webacy bar automated reading; we read by hand or ask permission. Four were read in full, and a fair order needs at least five. They are listed A to Z with what we read.
Not ranked since 11 November 2026. Last checked on 11 November 2026. What brings the ranking back: A person reads the pages of one of Blockaid, MetaMask Transaction Shield, Phantom, Rabby Wallet and Webacy in a browser, or a fifth transaction simulation product can be read and compared: then five are read and the category is ranked again.