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Mender vs Memfault

How Mender and Memfault differ on target hardware, rollback, deployment and cost.

MenderMemfault
TypeLinux OTAMCU observability + OTA
TargetsEmbedded LinuxMCU + embedded Linux
DeploymentSaaS + self-hostedSaaS
RollbackA/B partitions with automatic rollback on failed bootCohort-based staged rollout; halt on crash-rate regression
How it worksWrites the new root filesystem to the inactive partition, reboots into it, and rolls back automatically if the device fails to check in. Delta updates and phased rollouts sit in the paid tiers; the update mechanism itself is open source and self-hostable.Devices upload coredumps, metrics and reboot reasons. Releases go to cohorts, and the crash signal tells you whether to continue or stop — which is the part every other platform leaves to you. OTA is one feature of an observability product, not the whole product.
Pricing*OSS free; hosted from $34/moFree to 10 dev devices; from $3,495/mo
Free tierYesYes
Open sourceApache-2.0 (client + server)Firmware SDK (Apache-2.0)
Best forLinux fleets that must never brickTeams who need to know why devices fail

Mender

  • A/B rollback is the safest widely deployed model
  • Genuinely usable open-source edition, not a crippled demo
  • Self-host or hosted without changing the client
  • Dual partitions cost you flash — roughly double the rootfs
  • Not designed for constrained MCUs

Memfault

  • Coredump analysis on constrained MCUs is genuinely hard and they do it well
  • Rollouts driven by real crash data, not hope
  • Strong chip-vendor integrations
  • Paid tiers start far above hobby or small-fleet budgets
  • Observability is the product; OTA alone is an expensive way to buy it

Bottom line

Choose Mender for linux fleets that must never brick. Choose Memfault for teams who need to know why devices fail.

* Published list pricing (vendor pricing pages, August 2026).