I'm a solo dev and a long-time D&D player. I built Truesight 5e for my own tables first until it grew into this polished state.

Feature Highlights:

Creature tab. Drop in any statblock (Dire Wolf, Brown Bear, your DM's homebrew), hit Transform, and the sheet tracks the form's HP, AC, attacks, and skills live. Stat sources are configurable per ability (STR/DEX/CON from the form, INT/WIS/CHA from the druid). Same engine handles polymorph, true polymorph, shapechange, and pets/familiars.

An external bonus engine that follows the actual stacking rules. Typed and untyped bonuses, "highest of" resolution, multi-target chips ("All Saves, All Attacks"), bonus dice (Bless = +1d4 baked into the roll), damage affinities with Resistance / Immunity / Vulnerability, and conditional grants.

Both 5e and 5.5e in the same sheet, swap any time. Long rest hit dice (half vs all), Heroic Inspiration, wizard prep caps, spell library filter (SRD 5.1 vs 5.2 vs both) - the right rule fires for the edition you're on.

Homebrew that doesn't fight you. Custom spells, weapons, feats, items, traits, and creature forms inline. JSON bulk-import for entire homebrew spell catalogs.

FOR GROUPS

Live GM Dashboard. When a player takes damage or burns a slot on their phone, their card updates on the GM's laptop while it's happening. Paid tier.
Shared party storage and item trading between characters, with confirm-on-both-sides.
Share codes so players can join a GM's campaign with a short code, no account/link dance.

OTHER GOOD STUFF

8 themes (Parchment, Fey, Arcane, Verdant, more), per character.
Mini Tracker bar to pin HP, AC, or any custom resource (Ki, Sorcery Points, the homebrew currency your DM invented) to the top of every screen.
Multiclass support, encumbrance + attunement tracking, per-character journal, prepared spells, hit dice, exhaustion, death saves.

Cross-platform: same character syncs to Windows and the web (closed beta). iOS / macOS / Linux are planned.

PRICING

Free: 1 cloud character slot, 30 custom spells, share codes, full offline mode. Forever, no ads.
Adventurer: unlimited cloud characters and custom spells, shared party storage + trading.
Master: everything in Adventurer plus the live GM Dashboard.

This is a solo project and I ship updates constantly based on what my own group needs at the table. Bug reports and feature requests welcome.