Drop the post URL. We pick winners randomly. SHA-256 proves fairness publicly.
⭐ 4.9/5 from 1,247+ reviews · 🌍 Used in 60+ countries
We use cryptographic randomness (CSPRNG), not pseudo-random. Combined with public SHA-256 hash for full transparency.
Public posts, Reels, IGTV. Carousel posts. Even posts with thousands of comments — paid tier handles any size.
Same user commenting multiple times = single entry. Or count each comment — your choice.
Pick 1, 5, or 50 winners in one draw. Top + reserve list for no-shows. All cryptographically verified.
Any post, Reel, or IGTV. We auto-detect the format.
Set winner count. Choose if you want duplicate-filter on/off. Optional: require @mentions or specific hashtags.
SHA-256 hash published. Random selection runs. Winners revealed with cryptographic proof.
PDF with all participants, hash, timestamp, seed, winner. Shareable verification link.
Math.random() in JavaScript is pseudo-random and predictable. SorteiGram uses crypto.getRandomValues() — backed by OS entropy. We then hash (entropy + post data + timestamp) BEFORE the draw, locking in the result so we can't manipulate it later. This is provably-fair, the same standard used by blockchain casinos.
Yes. We use CSPRNG (cryptographically-secure pseudo-random number generator) seeded with system entropy + Instagram post data + timestamp. Then we hash everything in SHA-256 BEFORE the draw, making prediction impossible.
Yes. You can blacklist any handles before the draw (e.g., your own brand account, employees, family). Blacklist is included in the public SHA-256 hash.
There can't be a tie — each comment gets a unique index, and we pick by index. No two participants can have the same probability.
Technically yes, but it breaks the cryptographic guarantee. The original hash was published — redoing changes the hash. We recommend committing to the first draw for trust.
No hard limit. We've handled 100,000+ comments in a single draw. Larger posts take longer to load (1-2 minutes for huge posts).
Drop the post URL. We pick winners randomly. SHA-256 proves fairness publicly.
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