Alder vs SCORM Cloud: what each one tells you, and when to use both

Both tools answer one worry: will this course track in the LMS (the learning management system your learners use)? What we say about SCORM Cloud comes from Rustici Software's own pages, as of October 2026, or from our own test runs there.

What each one is

SCORM Cloud is a hosted service from Rustici Software for testing, playing and sharing e-learning (Rustici's SCORM Cloud page, as of October 2026). You upload a zip to its course sandbox, launch it, and read what it recorded: completion, pass or fail, score and time, plus a debug log of every call the course made. Rustici says it has offered it since 2009, and Articulate's own LMS troubleshooting article recommends it as the first step when a course misbehaves in an LMS.

Alder is a pre-flight check that runs in your browser. Drop the published zip and it recognizes the tool that built it (Storyline 360, Rise 360 or Captivate), reads its tracking settings and checks the zip, the manifest (imsmanifest.xml, the file that tells an LMS how to launch the course) and those settings. Its test player plays the part of the LMS for SCORM 1.2, SCORM 2004, xAPI and cmi5 courses, so you can click through and see what an LMS would record. Nothing is uploaded, and there is no account.

What SCORM Cloud does that Alder doesn't

• It is a real LMS. SCORM Cloud's record is real; Alder's is a prediction. Alder's predictions now match SCORM Cloud for every scenario we ran there in September 2026; where they differed, we corrected Alder. SCORM Cloud is the reference, not the other way round.
• It runs the whole course. A course can be split into several SCOs (separately tracked parts). SCORM Cloud's course settings include SCORM 2004 sequencing and rollup options (we saw them when we tested there), the rules for moving between parts and adding up their results. Alder plays one SCO at a time and does not run sequencing; it explains in words what the sequencing declares.
• It delivers courses to people. Public links and email invitations, reports on completions and on each question that you can export, a Learning Record Store (where xAPI courses send their results), LTI 1.1 and 1.3 (a way to plug a course into another LMS), AICC (an older course standard), and an API (product page). Its Dispatch feature shares a course with other LMSs while SCORM Cloud keeps hosting it. Alder does none of this: it stores nothing and has no learners.
• It is the referee people accept. Articulate's article sends authors whose course works in SCORM Cloud but not in their LMS to the LMS provider. A SCORM Cloud result carries weight with LMS vendors and clients that a newer tool's report may not yet.

Neither tool is a formal conformance test. Rustici says SCORM Cloud does not check for strict technical conformance and points to ADL's test suite for that; the same is true of Alder.

What Alder does that SCORM Cloud doesn't

• No account and no upload. The course never leaves your browser tab, which matters for client work you can't send to a third party.
• It explains why, in your authoring tool's words. Each problem says what happens to learners, why, and which setting to change in Storyline, Rise or Captivate, such as a quiz pass mark that differs from the manifest's mastery score. Many of these show before you play the course at all.

• Every call in plain English. SCORM Cloud's debug log lists the raw calls; Rustici publishes a separate guide to reading it. Alder's call log puts a sentence above each raw call (see how to read a SCORM Cloud debug log).
• A saved-progress meter. SCORM 1.2 only promises 4,096 characters of suspend_data, the text a course saves so learners can resume. When we sent more in SCORM Cloud, it refused the save with error 405 in its debug log, which you only find by reading the log. Alder shows a meter while you click and a “Must fix” finding when a course goes over.
• It notices a course that never saves. SCORM Cloud saves on its own timer, every 10 seconds by default, and ignores the course's own save call (Rustici). Alder notes a course that never saves until it finishes, which can lose progress when a learner closes the window.
• Notes for other LMSs. SCORM Cloud is one LMS with its own defaults. Alder says whether seven LMSs (SAP SuccessFactors, Moodle, Workday Learning, Cornerstone, Canvas, Docebo and TalentLMS) would record the same result. These notes come from vendor documentation and author reports: documented, not yet verified in each LMS. See works in SCORM Cloud but not in your LMS.
• Fixes in the published zip. For Storyline and Rise courses, change settings such as the pass mark or the status the course reports, and words and images, in the zip itself, then check it again without going back to the authoring tool.

Price, as of October 2026

SCORM Cloud (Rustici's pricing page, read 14 October 2026; sales tax may apply). A registration is the record of one learner on one course.

• Trial: free with no time limit; 10 registrations at a time, which you clear and reuse; up to 3 courses and 5 GB.
• Tester: $40 a month; 10 resettable registrations and unlimited storage.
• Larger plans: from $90 a month (Little, 50 registrations every 30 days) up to $5,000 a month (Ultra, 50,000).

Alder: every check, every fix instruction, the test player and the report are free, with no account and no limit. Pro, $19 a month or $149 a year, adds downloading the zips you edit in Alder and the full LMS-by-LMS explanations. See pricing.

When to use which

• Alder alone for every draft and republish, for client courses you can't upload elsewhere, and when you want to know why, not just what.
• SCORM Cloud when you need the reference record to show an LMS vendor or a client, for multi-SCO courses with sequencing, and for hosting or sharing a course with learners.

Used together, they make a short routine:

1. Check and fix in Alder

   Drop the zip into Alder, fix what it finds, launch the course and click through as a learner.

2. Run it in SCORM Cloud

   Upload the fixed zip and take the same path. We corrected Alder's predictions against its record in September 2026, and they now match for every scenario we ran.

3. Read the log in words

   If SCORM Cloud shows something you don't understand, Alder's call log describes the same calls in plain English, next to the raw call.

   

4. Try one learner in your LMS

   Before rollout, test one learner in the real LMS. If it differs from SCORM Cloud, see what to check next.

Try it

Drop your published zip into Alder, or click “Try a sample course” under the drop zone to see every step on a course we made. It is free, and your course never leaves your browser. For more ways to test before upload, see how to test SCORM without an LMS.