Top 4 nebulus.app Alternatives for 2026
Finding a study and assignment tracker that actually fits the chaos of Aussie uni schedules is still too hard. Many apps hide group project tools behind paywalls or force you to jump between different tabs just to keep up. This comparison shows assignment tracking, group features, and real AI study help so you choose one that matches your semester and budget.
Table of Contents
Culleva
At a Glance
AI assignment review checks your draft against your marking rubric before you submit. The app also checks your citations and your writing, and it runs in the browser, so you do not install anything. It doesn’t make flashcards or quizzes, so it works alongside a revision app rather than replacing one. A free tier covers core features, while Pro expands AI usage for heavier use.
Core Features
Culleva’s AI assignment review takes your assessment brief, marking rubric and draft (PDF, Word or pasted text), checks the draft against each rubric criterion, and suggests specific edits with an indicative mark range. The citation checker formats references in APA 7, Harvard and AGLC4 and scans a draft for in-text citations and reference-list entries that are missing or don’t match. There is also a free writing check, which flags stock phrasing that makes writing read as AI-generated.
Key Differentiator
The one thing that sets Culleva apart is that its AI works from your unit’s own documents. The assignment review checks your draft against the marking rubric you upload, so the feedback follows the criteria your marker will use. The citation checker covers AGLC4, the Australian legal style, as well as APA 7 and Harvard.
Pros
Culleva is free to use, with 8 AI credits a week, so you can try draft feedback and citation scans without a subscription. The AI features help with draft feedback and reference checking, which speeds up pre-submission edits, and the writing check costs no credits at all. Because it runs in the browser, you can use it on a library or lab computer without installing software.
Cons
- Limited AI feature allowances in the free plan may be restrictive for heavy users who rely on lots of draft checks.
- No flashcards, quizzes or other revision tools, so you will need a separate app for exam prep.
Who It’s For
You if you are juggling multiple units and want to know where a draft is losing marks before it goes through Turnitin. Use it in PSYC101 or COMM200 to check an essay or lab report against the rubric and tidy up your references before you submit. It suits students who want feedback against the rubric and help with referencing, and who already use a separate tool for revision.
Unique Value Proposition
The AI assignment review gives an indicative mark range before submission and concrete edits where you are losing marks. That lets you iterate on essays and lab reports against a rubric, rather than guessing what to fix. For coursework, this turns last-minute panic into repeatable editing sessions.
Real World Use Case
You keep your PSYC101 revision in whichever flashcard or quiz app you already use and bring the essay to Culleva. Before your essay is due you upload the brief, the marking rubric and your draft, apply the suggested edits and re-run the review. Then you scan the draft for in-text citations that don’t match your APA reference list.
Pricing
A free plan gives you 8 AI credits a week to spend on draft reviews and citation scans. Pro costs A$9.99/month for 300 credits, for students who use the AI tools heavily.
Website: https://culleva.com
MyStylus
At a Glance
A paid plan is the advertised entry price when billed annually. The product was created by a team of US university graduates and targets academic writing and study tasks. It emphasises ethical use and originality while offering tools for essays, summaries and research support.
Core Features
MyStylus combines AI generated essays, research helpers, rewriters, graders and summarisers into one toolkit. It links output to trusted sources and offers citation formatting for common styles. You can customise tone, format and give detailed instructions to shape results.
Key Differentiator
The platform focuses on academic standards and trusted source integration as its main angle. That focus means outputs aim to include references and ready citation formatting for essays and bibliographies. For students this reduces time spent switching between a generator, citation tool and a plagiarism checker.
Pros
High quality AI assistance claims deep contextual understanding for academic tasks. Customisable tone and output format help you match unit requirements and specific assessment briefs. The suite includes research oriented content generation, citation formatting and compatibility with plagiarism checkers, and the vendor advertises free trials plus tiered subscriptions.
Cons
-
Buyer feedback points to accuracy limits on highly specialised or nuanced topics, so expert review may still be needed.
-
AI generated drafts often require manual refinement to reach final submission quality.
-
Multi language support is limited outside English, which reduces usefulness for non English assessments.
-
Heavy reliance on the tool could weaken critical thinking if used as a substitute for drafting and analysis.
When It May Not Fit
You should not rely on MyStylus for highly specialised research without subject expert checks. If your unit requires submissions in languages other than English, the limited multi language support will be a problem. If you prefer to draft originals from scratch to build critical thinking, the platform may feel like the wrong fit.
Notable Integrations
The tool connects with plagiarism checkers to verify originality claims. It also integrates citation formatters for APA, MLA and Chicago styles. Those integrations let you produce referenced drafts that match common university requirements.
Who It’s For
You are a student who needs help drafting essays, generating outlines and formatting citations. You are a researcher or educator who wants quicker literature summaries and draft improvements. You are a creator who needs rewrites or clarity edits for academic style.
Real World Use Case
A university student drafts a research paper with MyStylus, generates citations and improves clarity before manual edits. The student runs a plagiarism check and reformats references to APA for Turnitin submission. That workflow cuts time spent on bibliographies and first drafts.
Pricing
A free tier is available with limited features for trial use. Paid plans are available when billed annually, with quarterly and monthly options also offered. The vendor advertises tiered subscriptions and free trials to test core features.
Knovus
At a Glance
A knowledge graph references your uploaded course materials to build tailored quizzes and a study roadmap. That approach personalises revision to the exact lectures and slides you upload. You can link course content from Canvas and Google Docs for targeted practice.
Core Features
Knovus maps concepts from your files into a personalised study roadmap that highlights gaps and suggests what to revise next. It generates practice questions from uploaded slides and notes, and serves adaptive practice questions that focus on weaker areas. Progress tracking shows mastery over topics and supports steady exam preparation.
Key Differentiator
Knovus uses a knowledge graph that ties questions and study paths directly back to specific course materials. This means the platform learns what you actually covered in lectures and targets weak concepts with drills that reference those exact materials.
Pros
The system personalises study so you spend time on what matters for each unit. That saves you time compared with generic flashcards and random quizzes. Integration with common uni platforms lets you pull lecture slides into study sessions without retyping notes. The adaptive drill model keeps practice focused on areas where your performance drops, helping you move from unsure to confident on tricky topics.
Cons
-
Requires an account and login, so you cannot use it anonymously or offline.
-
Accuracy depends on the materials you upload, so poor or incomplete slides reduce the quality of generated questions.
-
Public information about technical limits and scalability is limited, so large cohort deployment details are unclear.
When It May Not Fit
If you prefer ready made question banks that do not need uploads, this tool will feel like extra setup. If your unit relies on external readings rather than lecture slides, the graph may miss key context. Departments planning campus wide rollouts should ask about scaling, because public details are sparse.
Notable Integrations
Knovus connects with Canvas, Brightspace, Google Docs, and Google Slides for direct import of lecture slides and notes. These links reduce manual file handling and let you launch quizzes from the same files you use in tutes and labs.
Who It’s For
You if you want study material tied to your actual lectures and slides, not generic question sets. You if you need focused revision for finals in units like PSYC101 or ECON200. You if you prefer adaptive drills that reveal mastery rather than guessing what to study.
Real World Use Case
A student uploads lecture slides and past tute questions from PSYC101, then runs a personalised quiz set for weeks 6 to 12. Knovus flags the topics where the student misses questions and creates follow up drills. The student repeats the drills until the platform shows improved topic mastery.
Pricing
Pricing details are not listed here, as the product entry is informational only. Contact Knovus directly for current plans, campus licences, or student pricing.
Viaduct
At a Glance
Built on cognitive science principles, Viaduct aims to eliminate platform switching and attention residue. Viaduct’s marketing materials state it is backed by research and endorsed by educators. It bundles smart notes, organised readings and shared study spaces with personalised AI study support and progress metrics.
Core Features
Create AI assisted smart notes and organise readings, files and links in one place. Work together in shared study spaces and manage deadlines, to do lists and study schedules alongside progress metrics. Personalised AI study support converts lecture material into summaries, flashcards and study prompts to speed revision.
Key Differentiator
Viaduct centres on reducing attention residue by keeping study tasks inside a single environment. That single focus reduces time lost to switching between apps during a study block. Compared with Culleva, which centres on draft feedback, citations and writing checks, Viaduct serves an audience focused on distraction reduction.
Pros
The interface keeps materials and tasks in one place, which reduces cognitive friction and saves switching time. AI features help you generate summaries and flashcards from your own notes, which speeds revision preparation. That research claim and educator endorsement add curricular credibility for teaching staff and students.
Cons
-
Pricing and integration details are not publicly accessible on the website.
-
Platform effectiveness relies on your discipline in a focused environment.
-
Limited information exists about customisation options and external tool connections.
When It May Not Fit
If you need heavy custom integrations or API hooks, Viaduct may not fit your workflow. If your team relies on automated draft grading or collaborative whiteboard tools, look for a platform with those features. Also, unavailable pricing and integration details online make vendor evaluation harder for tight budgets.
Who It’s For
Students who lose time switching between apps and want a single study space will benefit most from Viaduct. Learners who want AI assisted note creation, clear task lists and peer study rooms fit the profile. Small study groups that want one place to share materials and track progress will also find it useful.
Real World Use Case
A PSYC101 student organises lecture slides, creates AI assisted summaries, and runs weekly quiz flashcards inside Viaduct. They share a study space with two classmates for tutes and sync schedules for assignment deadlines. Over a semester, that single workspace reduces time lost to switching and keeps revision focused.
Pricing
Pricing is not listed on the public website. The site suggests a subscription or freemium model but gives no figures. Contact vendor sales for current plans if you need exact costs for a unit or cohort.
Comparison of alternatives
Each alternative to Culleva presents differentiating features that cater to distinct needs. Understanding the capabilities of these platforms enables university students to choose the service best suited to their requirements.
Draft feedback and study environments
Culleva distinguishes itself with feedback before you submit: it reviews your draft against the marking rubric, gives an indicative mark range and checks your citations. By contrast, Viaduct focuses on eliminating distractions, promoting a single workspace for tasks.
Study customisation and AI capabilities
Knovus excels in creating personalised study tools through its knowledge graph technology. MyStylus provides an advantage in academic writing through integrated citation assistance and tone customisation options. Culleva overlaps with MyStylus on referencing: its citation checker formats APA 7, Harvard and AGLC4 references. It doesn’t build quizzes or flashcards, so pair it with Knovus or another revision tool if that is what you need.
Best fit
-
If you want feedback on a draft against your marking rubric before you submit, plus citation checking and a free writing check in the browser, Culleva fits.
-
Students needing rigorous citation formatting alongside creative drafting tasks will find MyStylus beneficial.
-
Individuals looking for targeted study assistance tied to their unique lecture materials may prefer Knovus with its adaptive roadmap tools.
Our pick
Culleva’s rubric-based draft feedback, citation checker and writing check suit busy university students who want to know where they are losing marks before they submit. Culleva doesn’t offer study exercises, so for personalised revision use Knovus alongside it, and for writing precision MyStylus may hold appeal.
Culleva stands out for feedback before you submit, checking your draft against the rubric and giving an indicative mark range.
| Product | Key Features | Unique Advantage | Pricing | Limitation |
|---|---|---|---|---|
| Culleva | AI assignment review, citation checker, free writing check | Feedback against your marking rubric before you submit | Free plan (8 AI credits a week), A$9.99/month Pro | No flashcards or quizzes; limited AI usage in free plan |
| MyStylus | Essay generation, citation formatting | Academic standards focus | Paid plan, free trial | Accuracy may falter with specialised topics |
| Knovus | Personalised quizzes, progress tracking | Links to lecture specifics | Price not published | Relies on quality of uploaded materials |
| Viaduct | All-in-one study environment, AI summaries | Single platform for study | Price not published | Effectiveness depends on disciplined use |
Want to know where your draft is losing marks?
Culleva reviews your draft against the marking rubric before you submit, shows where it is losing marks and suggests specific edits, with an indicative mark range. In the same browser app you can check your citations in APA 7, Harvard or AGLC4 and run a free writing check.
If you want feedback on your next essay in a unit like PSYC101 or COMM200 before it goes in, try Culleva. Visit Culleva to get started with draft reviews, citation checks and writing checks.
FAQ
How does Culleva help with assignments?
Culleva doesn’t track deadlines. It helps with the assignment itself: upload the brief, the marking rubric and your draft, and it reviews the draft against each criterion, suggests specific edits and gives an indicative mark range. You can revise and re-run the review before you submit.
What is the difference between Culleva and MyStylus for essay writing support?
MyStylus provides high-quality AI assistance that focuses on customising tone and output format for academic tasks. Culleva, on the other hand, gives feedback on a draft you wrote yourself, checking it against your marking rubric, and checks your citations in APA 7, Harvard or AGLC4. If you’re looking for feedback on your own writing before you submit, Culleva might be your best fit.
Can I use Culleva for collaborative group projects?
Culleva doesn’t include group chat, shared workspaces or whiteboards, so you will need another tool to coordinate with your group. It helps with your own part: get feedback on your section against the rubric before you hand it to the group, or check that the group’s reference list is consistent.
Does Culleva offer any AI grading features?
Culleva’s AI assignment review checks your draft against your marking rubric and gives feedback on each criterion. This tool can help you understand where you might be losing marks before submitting your essays. You can use it in combination with your writing process for improved grades.
How much does Culleva’s Pro plan cost?
Culleva’s Pro plan costs A$9.99 a month for 300 AI credits, compared with 8 credits a week on the free plan. It’s designed for more intensive use, so consider upgrading if you find yourself frequently nearing the limits of the free plan.
Recommended
Know where you stand before you submit
Get AI feedback on your draft against the rubric, check your citations, and catch phrasing that reads as AI-generated. Free to start.