Comparison

Chemistry Widget vs LLM Master

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Chemistry Widget

Explore detailed profiles of every element on the periodic table, including their origins, uses, and scientific properties. This app offers interactive Home Screen widgets to discover new elements daily, making science accessible for students and enthusiasts.

Highlights
  • Detailed element profiles
  • Origins and etymology
  • Main uses and facts
  • Home Screen widgets
  • Filter by properties (radioactive, toxic)
  • Filter by group block
Features
Read full description

Meet the atoms that make up the universe! Chemistry Widget brings detailed element profiles with origins, etymology, main uses, and fascinating facts. Handy for students, teachers, or anyone curious about science and chemistry. Chemistry Widget keeps the Periodic Table of the Elements right in your pocket. Discover new elements every day with different types of Home Screen widgets. Learn the details of each element with etymology, uses, electron configuration, oxidation states, group and period, electronegativity, atomic radius, ionization energy, density, electron affinity, standard state, melting and boiling point, and the year it was discovered. Filter and highlight the elements by radioactive, toxic, explosive, or by group block: nonmetals, noble gases, alkali metals, alkaline earth metals, metalloids, post transition metals, transition metals, halogens, lanthanides, and actinides. We have many exciting updates planned, so stay tuned!

About

LLM Master

Features
Read full description

Master LLM Agent engineering from zero to production engineer level. •112 lessons · ~1.5M characters in-depth content Onboarding → LLM Foundation → Agent Engineering → RAG → Production → Frameworks → ERP/ABAP applied → Advanced → Extended tracks (Python, FastAPI, LangGraph, Vector DB, MCP, Multimodal, Deployment, hands-on projects). •Zero-hallucination principle Every factual claim is backed by verified official documentation, listed as sources. No speculation, no unverified info. •AI Tutor (Claude-powered) 1:1 Q&A grounded in lesson context. Drag any passage in the body and ask about that specific part — auto-quoted in the question. •Learning tools • 5-question applied quizzes (not rote memorization — application/judgment/scenarios) • Bookmarks across lessons with unified view • Font size & Korean TTS (Web Speech API) • Home-screen Quick Actions (resume / bookmarks / AI tutor) •For LLM Agent / AI Engineer interview prep, ML engineer transitioners, AI product developers, RAG/Agent system builders. •Topics Prompt Engineering, Tool Use, Structured Outputs, Context Windows, ReAct, Reflexion, Planning, Memory, MCP, RAG (Chunking, Advanced patterns, Eval, Vector DB internals), Eval, Guardrails, Observability, Cost Optimization, Prompt Injection, Multi-agent Orchestration, Long-context, Sandboxed Code Execution, LangChain/LangGraph, AutoGen, CrewAI, LlamaIndex, MCP Server, Computer Use, ABAP/SAP, Fine-tuning vs RAG, Distillation/Quantization, Eval Datasets, Multi-tenant, Python/FastAPI, pgvector/Qdrant/Pinecone, Vision, Speech (STT/TTS/Realtime), Image Generation, 2026 Frontier. •Payment A one-time app purchase ($29.99) unlocks 112 lessons, 112 quizzes, bookmarks, Quick Actions, TTS, and all future content updates — forever. The Anthropic Claude-powered AI tutor includes 10 free messages every month; top up via consumable packs (Mini 200 messages · 60 days / Standard 500 messages · 90 days / Power 1,500 messages · 180 days). No subscription, no auto-renewal. Privacy policy: https://www.resonance-space.net/llmstudy-privacy-en.html

Screenshots

Chemistry Widget4 screens
LLM Master4 screens

Verdict

The call

The clearest difference is price: Chemistry Widget at $0.99 against LLM Master's $22.99. Chemistry Widget also leads on in-app purchases (none vs 4). LLM Master's advantage is device support (4 vs 2) and iOS requirement (15.0 vs 18.4). On update cadence and ads 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

CostPrice · In-app purchases · Ads · Monetization

Chemistry Widget costs $0.99 and LLM Master $22.99 up front. LLM Master sells 4 one-off in-app purchases. Chemistry Widget asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 20, 2026 and September 14, 2026 respectively.

Scorecard4 real differences · 6 level
Chemistry Widget versus LLM Master: the parameters behind the verdict, then further details
ParameterChemistry WidgetLLM Master
Price$0.99 — better$22.99
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad, iPod, Mac — better
Requires iOS18.415.0 — better
Further details — not scored
Size5 MB6 MB
Age rating4+4+
DeveloperCecile LebleuResonance Space

In-app purchases

None

Chemistry Widget

No in-app purchases

4 purchases

LLM Master

One-time4
  • Code Deep DiveFree
  • Tutor Mini Pack$2.99
  • Tutor Standard Pack$5.99
Show 1 more
  • Tutor Power Pack$17.99

Questions

Is Chemistry Widget free?
Chemistry Widget costs $0.99, with no in-app purchases.
Is LLM Master free?
LLM Master costs $22.99, and also offers in-app purchases.
Do Chemistry Widget or LLM Master have ads?
Neither Chemistry Widget nor LLM Master shows ads.
Which is updated more often, Chemistry Widget or LLM Master?
Chemistry Widget ships an update every 3 weeks, and LLM Master every 3 weeks. Most recently, Chemistry Widget was updated on September 20, 2026 and LLM Master on September 14, 2026.

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