Marker.io, BugHerd and Userback vs Mushi Mushi for agencies
Never used any of these? You don’t need them to use Mushi Mushi. See what Mushi Mushi does for client apps instead.
If you build sites or apps for clients, you have probably looked at Marker.io, BugHerd or Userback. They are built for one job: a client reviews what you built, clicks on the page and leaves a comment, and you work through the list.
Mushi Mushi is built for a different moment. The app is live, and the people using it hit bugs your client never sees. They tap a report button, and you get the likely cause in plain English with a prompt that fixes it.
So this is not a like-for-like comparison, and on several things an agency cares about, the other three are ahead. This page says where.
Facts checked against the linked sources. Next review due . Rows marked “unverified — check before publishing” could not be confirmed on that date.
Side by side
| Question | Marker.io, BugHerd and Userback | Mushi Mushi |
|---|---|---|
| Who presses the button | Mostly your client and your own team, reviewing a site you are building or maintaining | The people using the finished app, in production |
| Free client access | Yes, on all three: unlimited guests or reporters without a paid seat | No. A client who signs in takes a seat |
| A client sees only their own project | Yes: guests are invited per project (Marker.io, BugHerd); roles can grant access to specific projects (Userback) | Only if that client's app is in its own team. A member reads every app in a team |
| Task board for the client | BugHerd (guest task board on Premium) and Userback (kanban board) have one; Marker.io has its own issue list with statuses and sends issues to your tracker | No board. A list with filters, and sync to Linear, Jira or GitHub Issues |
| Comments the client cannot see | Marker.io on every plan; BugHerd on Premium; Userback on Business | No |
| Video or session replay | BugHerd: video feedback on every plan. Marker.io: session replay from Team. Userback: session replay from Business | No video. An optional replay setting in the web SDK, off by default |
| Console and network logs | Marker.io from Team; Userback from Business. BugHerd lists "technical data" (browser, OS, screen size) on every plan | On every plan, Free included |
| What you read first | The client's comment, pinned to the page with a screenshot | The likely cause in plain English, with a fix prompt for your AI editor |
| Phone apps | Userback has a mobile SDK on Business Plus. The Marker.io and BugHerd pricing pages list none | React Native and Capacitor SDKs on every plan |
| Your own brand, no vendor mark | Marker.io from Team; BugHerd on Premium; Userback removes its logo on Business Plus | No Mushi Mushi mark from Builder; on Free you can turn it off |
| SOC 2 | Marker.io: SOC 2 Type II on every plan | No SOC 2 report |
| Run it yourself | None of the three pricing pages offers it | Yes, free (AGPLv3 server) |
What the other three have that Mushi Mushi does not
- Free seats for clients. All three let any number of clients send and follow feedback without a paid seat. In Mushi Mushi a client who signs in takes a seat.
- Access to one project only. Marker.io and BugHerd invite a guest to a project, and Userback roles can grant access to specific projects. In Mushi Mushi a member of a team can read every app in that team, so a client needs a team of their own.
- A board the client can follow. BugHerd has a guest task board and Userback a kanban board. Mushi Mushi has a list with filters.
- Comments the client cannot see. Marker.io, BugHerd and Userback each have them on some plan. Mushi Mushi does not.
- Video. BugHerd takes video feedback, and Marker.io and Userback attach a session replay on their higher plans. A Mushi Mushi report is a screenshot and a timeline of what the person did.
- A SOC 2 report. Marker.io lists SOC 2 Type II on every plan. Mushi Mushi has no SOC 2 report.
If collecting client feedback during a build is the job, pick one of them.
What Mushi Mushi has that they do not
- A written cause for each bug. Every report comes with a plain-English diagnosis and a fix prompt for Cursor, Claude Code, Lovable or Bolt. The other three hand an AI agent the feedback over MCP; none of their pricing pages lists a written diagnosis. A diagnosis is an AI’s reading and can be wrong, so check it before you ship.
- Console and network logs on the free plan. Marker.io includes them from its Team plan and Userback from Business.
- Phone apps on the free plan. React Native and Capacitor SDKs, on every plan. Userback’s mobile SDK is on Business Plus.
- No vendor mark from $29. Builder and Studio show no Mushi Mushi mark on the widget.
- You can run it yourself. The SDKs are MIT and the server is AGPLv3.
What each one is
Marker.io: A website feedback and issue tracking tool for teams that build sites for clients: a widget and browser extension for annotated reports, sent on to the tracker the team already uses.
| Claim | Marker.io | Source |
|---|---|---|
| Price | Starter $39/mo billed annually ($59 monthly) · Team $149/mo billed annually ($199 monthly) · Business custom. No free plan; a 15-day free trial with no card. | checked 2026-11-11 |
| Team seats and projects | Starter: 3 members, up to 10 projects. Team: 15 members, up to 50 projects. Extra members $4 each on Starter and $6 on Team per month, billed annually. | checked 2026-11-11 |
| Clients | Guests and reporters are free and unlimited on every plan, with no paid seat. A guest sees issues only on the projects they are invited to. | checked 2026-11-11 |
| Internal comments | On every plan: comments clients and reporters never see. | checked 2026-11-11 |
| Session replay, console logs and network requests | Team and Business only; not on Starter. | checked 2026-11-11 |
| Custom branding | Team and Business only. | checked 2026-11-11 |
| Security | SOC 2 Type II on every plan. SAML single sign-on on Business. | checked 2026-11-11 |
| AI | AI translation, rewrite and automatic issue titles on every plan, and an MCP server so an AI agent can read the feedback and fix issues. | checked 2026-11-11 |
BugHerd: A website feedback tool built around pinning comments to the page and a task board, for agencies collecting feedback from clients.
| Claim | BugHerd | Source |
|---|---|---|
| Price | Standard $50/mo ($42 billed annually) · Studio $80/mo ($67) · Premium $150/mo ($125) · Custom on request. No free plan; a 7-day free trial with no card. | checked 2026-11-11 |
| Team seats and projects | Standard 5 members, Studio 10, Premium 25. Unlimited projects on every plan. Extra members $8 each per month. | checked 2026-11-11 |
| Clients | Unlimited guests (clients and stakeholders) on every plan. Guests are invited to a project. | checked 2026-11-11 |
| Client task board and member-only comments | Premium and above: a guest task board, member-only commenting, and a choice of whether guests see member feedback. | checked 2026-11-11 |
| Video feedback | On every plan. | checked 2026-11-11 |
| Custom branding | Premium and above. | checked 2026-11-11 |
| Security | Single sign-on and a 99.9% uptime SLA on the Custom plan. The pricing page does not mention SOC 2. | checked 2026-11-11 |
| AI | MCP and automatic titles on every plan (beta); automatic tagging and similar-task detection on Premium (beta). | checked 2026-11-11 |
Userback: A user feedback platform: a widget and browser extension for annotated feedback and bug reports, a kanban board to manage them, and surveys and a feature portal on higher plans.
| Claim | Userback | Source |
|---|---|---|
| Price | Free forever $0 · Team $39/mo billed annually ($49 monthly) · Business $89/mo ($119) · Business Plus $159/mo ($199). | checked 2026-11-11 |
| Free plan | 2 sites, 2 seats, unlimited feedback, but feedback can be viewed for 7 days only. | checked 2026-11-11 |
| Team seats and sites | Team: 5 sites, 5 seats. Business: 25 sites, 15 seats. Business Plus: 50 sites, 25 seats. Extra seats $7 each per month billed annually, on Business and above. | checked 2026-11-11 |
| Clients | Unlimited reporters on every plan, with no seat. Team member roles can grant access to specific projects. | checked 2026-11-11 |
| Session replay, console logs and network requests | Business and above; not on Free or Team. | checked 2026-11-11 |
| Mobile SDK | Business Plus only. | checked 2026-11-11 |
| Remove the Userback logo | Business Plus only. | checked 2026-11-11 |
| Board and internal comments | A kanban board on every plan. Team comment controls (internal-only comments for some members) on Business and above. | checked 2026-11-11 |
| AI | MCP connectors from Team; AI insights (patterns, sentiment) on Business and above. | checked 2026-11-11 |
Mushi Mushi: An in-app bug reporter: the person using the app reports from a widget, and Mushi Mushi writes the likely cause in plain English with a fix prompt for Cursor, Claude Code, Lovable or Bolt.
| Claim | Mushi Mushi | Source |
|---|---|---|
| Price | Free $0 (1 app, 100 diagnoses a month, no card) · Builder $29/mo (3 apps) · Studio $79/mo (10 apps, 5 seats). A paid plan is attached to one app: that app gets the plan's diagnoses (1,000 on Builder, 3,000 on Studio) and the other apps in the team keep 100 a month until they are upgraded too. | checked 2026-11-11 |
| Clients | No free guest seats. A client who signs in takes one of the 5 Studio seats, and every member of a team, a read-only Viewer included, can read every app in that team. To show a client only their own app, give it its own team. | checked 2026-11-11 |
| Task board, internal comments, video | None of these. Reports sit in a list with filters, and can be sent on to Linear, Jira or GitHub Issues. No video feedback; the web SDK has an optional session replay setting that is off unless you turn it on. | checked 2026-11-11 |
| Console and network logs | On every plan, Free included: the last console and network events arrive with each report. | checked 2026-11-11 |
| A written cause and a fix prompt | On every plan: each bug gets a plain-English diagnosis and a prompt to paste into an AI editor. It is an AI's reading and can be wrong; check it before you ship. | checked 2026-11-11 |
| Mobile SDKs | React Native and Capacitor SDKs on every plan, Free included. Native iOS, Android and Flutter libraries are previews. | checked 2026-11-11 |
| Brand mark on the widget | None on Builder and Studio. On Free, a small "Bug reports by Mushi Mushi" link that you can turn off in Settings. | checked 2026-11-11 |
| Security | No SOC 2 report. Mushi Mushi collects evidence toward one; that is not a certification. SAML single sign-on on Enterprise. | checked 2026-11-11 |
| Self-host | Yes, free: MIT SDKs and an AGPLv3 server you can run yourself. | checked 2026-11-11 |
Using both
This is the common case. Keep Marker.io, BugHerd or Userback for client review while you build. Add Mushi Mushi when the app goes live, for the bugs real users hit and for the fix loop in your AI editor. Both widgets can sit on the same site, and there is no integration between them today.
Moving off BugHerd completely? There is a BugHerd migration guide.
Pick one of the other three if
- Your clients are the ones reporting, and they should not cost a seat.
- Each client must see only their own project, with no extra setup.
- You need a client-facing board, internal comments or video.
- A buyer asks for a SOC 2 report (Marker.io).
Pick Mushi Mushi if
- The reports come from the people using a live app, including phone apps.
- You want to read the likely cause first, then paste a fix prompt.
- You want console and network logs without moving up a plan.
- You want open source you can run yourself.
Start free — 1 app, 100 diagnoses/mo, no card
Frequently asked questions
- Can my clients use Mushi Mushi for free, the way guests work in Marker.io or BugHerd?
- Not as signed-in guests. Marker.io, BugHerd and Userback all let unlimited clients send and follow feedback without a paid seat. In Mushi Mushi anyone can send a report from the widget for free and follow it there, but a client who signs in to the console takes one of the 5 seats on Studio.
- Can a client see only their own project in Mushi Mushi?
- Only if their app is in its own team. An invitation is to a team, and every member, a read-only Viewer included, can read every app in it. Marker.io and BugHerd invite guests per project, and Userback roles can grant access to specific projects.
- Which is cheaper for eight client sites?
- It depends on what you count. On 2026-11-11, BugHerd Standard was $50 a month with unlimited projects and 5 members, and Marker.io Starter was $39 a month billed annually for up to 10 projects and 3 members. Mushi Mushi Studio is $79 a month for a team of up to 10 apps and 5 seats, with 3,000 diagnoses a month shared by all of them.
- What does Mushi Mushi do that these three do not?
- It is built for the people using the finished app rather than for a client reviewing a build, and it writes the likely cause of each bug in plain English with a fix prompt for Cursor, Claude Code, Lovable or Bolt. Console and network logs and the React Native and Capacitor SDKs are on the free plan, and you can run the whole thing yourself.
- When should I pick one of the others?
- When the job is collecting feedback from a client during a build: free guest seats, a board the client can follow, comments they cannot see, video, and, with Marker.io, a SOC 2 Type II report. Mushi Mushi has none of those.
- How current is this page?
- Every number was read on 2026-11-11 from the vendor's own pricing or help page, linked in each row. A value that cannot be confirmed on a review date is marked unverified or removed.
Related: You build apps for clients · BugHerd → Mushi Mushi · Pricing
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