SimStack Lite vs Scollr
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SimStack Lite
Interactive simulations help tech professionals develop critical decision-making skills for Agile, DevOps, and AI roles. Practice real-world scenarios involving team dynamics, project risks, and prioritization to build practical leadership abilities.
- Agile role simulations
- DevOps workflow practice
- AI product management scenarios
- Scrum Master decision making
- Product Owner prioritization
- AI governance concepts
- Workplace conflict resolution
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Build confidence for your next role with interactive workplace simulations and an AI Coach. SimStack Lite helps you practice decisions in Agile, Product, DevOps, AI, MarTech, and UX/UI design. Navigate stakeholder challenges, prioritize work, improve customer journeys, and explore design decisions through realistic scenarios. • PRACTICE REALISTIC CHALLENGES Make decisions through guided choices and interactive visuals, then get feedback to understand your options and tradeoffs. • EXPLORE CAREER ROLES Practice as a Scrum Master, Product Owner, Release Train Engineer, DevOps professional, AI Product or Program Manager, AI Workflow Designer, MarTech & Digital Experience Leader, or UX/UI Designer. • ASK YOUR AI COACH Discuss your simulation choices, understand your feedback, or ask questions anytime without starting a simulation. • LEARN IN SHORT SESSIONS Build skills at your own pace, track your progress, and earn XP as you complete challenges. Whether you are exploring a career change, preparing for interviews, or sharpening your skills, start with a role and practice your next challenge. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://simstackai.com/privacy
Scollr
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Scollr is a personalized feed for discovering research papers from journals, preprint servers, and academic repositories. Follow the topics, authors, and journals that matter to you. Scollr learns from the signals you give it - what you follow, save, and read - to build a research feed that fits your interests. PERSONALIZED RESEARCH FEED See papers shaped by your topics, authors, journals, bookmarks, and reading signals. Two researchers in the same field can get meaningfully different feeds based on what they care about. FOLLOW TOPICS, AUTHORS, AND JOURNALS Track broad fields, niche topics, specific researchers, journals, and preprint sources. Refine your follows anytime as your projects change. PLAIN-LANGUAGE PAPER SUMMARIES Many papers include short TLDR summaries so you can quickly decide what deserves a deeper read. SAVE PAPERS TO COLLECTIONS Organize papers by project, theme, class, lab meeting, or read-later list. Keep collections private or share them publicly. DISCUSS RESEARCH Comment on papers, ask questions, and point other readers to related work. FOLLOWING, DISCOVER, AND LATEST Use Following for personalized papers, Discover for broader recommendations, and Latest for new arrivals in your fields. BUILT FOR SCHOLARS AND CURIOUS READERS Scollr is for PhD students, researchers, clinicians, engineers, students, and anyone who wants a better way to keep up with academic papers. Scollr indexes millions of papers from OpenAlex across disciplines, journals, preprints, and repositories. New papers are added daily. Free to use. No paywall. No ads.
Screenshots
Verdict
The clearest difference is in-app purchases: Scollr at none against SimStack Lite's 2. Scollr also leads on update cadence (fortnightly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. SimStack Lite sells 2 in-app purchases, starting at $19.99 per month. Scollr asks for nothing beyond the download.
SimStack Lite ships an update every 3 months, Scollr fortnightly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.
| Parameter | SimStack Lite | Scollr |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 63 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Jasmine Doster | Chris Colpitts |
In-app purchases
SimStack Lite
- SimStack Pro Monthly7 Days trial$19.991 Month
- SimStack Pro Annual7 Days trial$149.991 Year
Scollr
No in-app purchases









