Marathon’s Symbiosis update is the honest reset Bungie owed the game. Dedicated PvE joins the extraction PvP loop, patrol zones give solo players an on-ramp that does not end in a squad wipe on minute three, and the loot pool has been rebalanced around builds that make sense outside team play. The companion desktop tools are catching up. We tested six apps for Marathon Symbiosis PvE mode on desktop, ranked by how well each one supports the new build-craft loop and how honestly they show the drop tables.
What to look for in a Marathon companion app
The Symbiosis loop rewards preparation more than the pure PvP loop did. Look for these in a companion:
- Build planning with slot-locked previews. You want to see the full loadout before you queue.
- Live drop-rate tracking pulled from Bungie’s API, not community estimates.
- Extraction route logging with per-map timers.
- A loot filter you can save per run type: solo PvE, matched PvE, PvP extraction.
- Cross-device sync so you can plan on a laptop and load the same build on your desktop.
Quick comparison
| App | Best for | Platforms | Free plan | Starting price | API-backed |
|---|---|---|---|---|---|
| Marathon Companion | Build planning | Windows, Web | Yes | Free | Yes |
| light.gg Marathon | Roll analysis | Web, Windows PWA | Yes | Free | Yes |
| Overwolf Marathon | In-game overlay | Windows | Yes | Free | Yes |
| DIM for Marathon | Inventory management | Web, Windows | Yes | Free | Yes |
| MarathonPlanner | Extraction routes | Windows | Yes | $3/mo | No |
| Extraction Log | Run outcome tracking | Windows, macOS | Yes | Free | No |
1. Marathon Companion, best for build planning
Marathon Companion is the official-adjacent tool most creators use to publish builds. Symbiosis added slot-locked previews last month, so you can see exactly which weapon perks and armor mods stack before you queue. It pulls from Bungie’s public API for drop rates and updates on new season data within a day.
Where it falls short: it does not include an in-game overlay. You alt-tab or run it on a second monitor.
Pricing:
- Free.
Platforms: Windows, Web.
Download: Marathon Companion
Bottom line: the first install for anyone getting serious about PvE builds. Fast, official-data-backed, and free.
2. light.gg Marathon, best for roll analysis
light.gg built its reputation on Destiny 2 rolls, and the Marathon fork extends the same philosophy: rank each perk on your gun against the community’s meta usage. In Symbiosis PvE, this matters more than in PvP because PvE encounters reward niche perks that were dead weight in extraction PvP.
Where it falls short: the community rating system reflects whichever meta is currently loud on Twitch. Emerging builds show up later.
Pricing:
- Free.
Platforms: Web, Windows via PWA.
Download: light.gg
Bottom line: open this every time a new gun drops. Two minutes on light.gg saves you a bad reroll.
3. Overwolf Marathon, best for in-game overlay
Overwolf’s Marathon overlay reads screen state and surfaces build info without alt-tab. In PvE runs it flags room-level loot tables, warns when an encounter is timed, and logs your extraction outcome to a run history you can review later. The overlay is polished enough that it does not compete with the game HUD.
Where it falls short: the free tier shows house ads. Overwolf’s account model requires a login you would not otherwise want.
Pricing:
- Free with ads.
- Paid: bundled with an Overwolf subscription; most players stay on the free tier.
Platforms: Windows.
Download: Overwolf
Bottom line: the strongest live-info tool. Worth the account creation if you play more than a couple of hours a week.
4. DIM for Marathon, best for inventory management
DIM (Destiny Item Manager) forked its inventory engine for Marathon at launch. Move gear between characters, tag rolls to keep or vault, and bulk-transfer for a run. Symbiosis exposed a proper vault size on the API, and DIM now surfaces vault usage in a way the in-game inventory screen does not.
Where it falls short: inventory management is not the same as build coaching. You use DIM to move things, not decide what to run.
Pricing:
- Free, open source.
Platforms: Web, Windows.
Download: Destiny Item Manager
Bottom line: run this alongside Marathon Companion. One decides the build, the other executes the move.
5. MarathonPlanner, best for extraction routes
MarathonPlanner is a community-built extraction route mapper. Load a map, drop pins, add timing, and share to your fireteam. Symbiosis added new patrol zones the game does not label clearly in-map; MarathonPlanner’s community has published route overlays that make the new zones legible in a way the base map does not.
Where it falls short: manual data entry, not API-backed. If a route dies to a patch, the community catches up in days rather than hours.
Pricing:
- Free trial.
- Paid: $3 per month for saved route library and multi-fireteam sharing.
Platforms: Windows.
Download: MarathonPlanner
Bottom line: essential if you run patrols daily. Ignorable if you queue random matched PvE.
6. Extraction Log, best for run outcome tracking
Extraction Log is the honest scoreboard app. Every run you finish gets logged with map, mode, loadout, and outcome; over weeks it produces a real answer to “which build actually extracts most often.” Symbiosis’s PvE mode benefits enormously from this because pure PvP tools never captured the “cleared the objective without extracting” data point that PvE now has.
Where it falls short: manual entry at run end unless you connect it to Overwolf’s screen-reader (adds a step).
Pricing:
- Free.
Platforms: Windows, macOS.
Download: Extraction Log
Bottom line: the only tool here that answers “am I actually getting better?” Underrated for solo PvE players.
How to pick the right one
Start with Marathon Companion and DIM. Companion picks your build, DIM moves the gear. Add light.gg the first time you want a real opinion on a new roll. If you are alt-tabbing more than twice per run, install Overwolf; the overlay pays for itself immediately. Extraction Log is for the second week of Symbiosis: once you have baseline gear, use it to prove which of two builds is actually winning runs. MarathonPlanner is for the patrol-heavy players who want to publish and share routes.
Skip these entirely if you only play matched PvE for an hour a week. Bungie’s in-game info is enough for casual sessions. The stack above is for players tracking builds across seasons.
FAQ
Do these apps work with the Symbiosis PvE-only mode? Yes. Every tool above pulls data through Bungie’s public API, which serves the same activity data for PvE and PvP. Overlays and route trackers work in patrol zones the same way they do in extraction lobbies.
Is DIM safe to use during ranked? DIM is inventory-only and does not modify game state. Bungie has confirmed it is allowed in every activity. It does not touch matchmaking.
Which app has the fastest Symbiosis data? Marathon Companion, because it pulls straight from Bungie’s manifest and updates within hours of a patch. Community-maintained tools like MarathonPlanner catch up in days.
Do any of these give me an unfair advantage? No. All six read public data and surface it out-of-game. In-game aim, timing, and squad play are unchanged.
Can I run these on Steam Deck? Marathon Companion and light.gg run in the Deck browser. Overwolf and DIM are Windows-desktop-first. Extraction Log works on macOS but has no Deck build yet.
What changed in Symbiosis that these apps needed to catch up on? Bungie exposed vault size on the API, added new patrol zones with their own drop tables, and rebalanced the perk pool. Every tool here shipped an update within two weeks of Symbiosis dropping.
