Comparison

Emily English Coach vs Or Simplex Step

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

Head to head
About

Emily English Coach

Practice speaking English with an AI voice coach that listens, corrects in real-time, and remembers your progress. Engage in live conversations on any topic at your own pace, receiving gentle feedback and vocabulary suggestions.

Highlights
  • AI voice coaching
  • Real-time speaking correction
  • Live conversation practice
  • Progress tracking and memory
  • Personalized vocabulary suggestions
  • Learn by speaking, not memorizing
Features
Read full description

A Emily é sua coach de inglês por voz: conversas reais com uma professora de IA que te ouve, corrige na hora e lembra do seu progresso. FALE, NÃO DECORE Nada de listas de vocabulário ou exercícios de múltipla escolha. Você aprende falando — sessões de conversação ao vivo, sobre qualquer assunto, no seu ritmo. CORREÇÕES NA HORA A Emily corrige seus erros com delicadeza durante a conversa e sugere vocabulário melhor, como uma professora particular faria. MEMÓRIA DO SEU PROGRESSO Cada sessão gera um resumo com destaques. A Emily lembra do que vocês conversaram e do seu nível — a próxima aula continua de onde a anterior parou. PRA QUEM É • Quem trava na hora de falar inglês • Quem quer praticar pra trabalho, viagem ou estudo • Quem não tem tempo (ou orçamento) pra aulas particulares ASSINATURA O acesso é por assinatura (mensal ou anual), renovada automaticamente. Cancele quando quiser nos Ajustes. Termos: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacidade: https://emily.marfin.co/privacidade

About

Or Simplex Step

Features
Read full description

OR Simplex Step-by-Step is a comprehensive Operations Research solver for students. Built and validated with professors at Kyiv Polytechnic University, it is used by students worldwide. EVERY METHOD YOU NEED - Simplex method: classical, Two-Phase, and Big-M - Integer programming: Branch and Bound - 2D graphical method: feasible region, objective line, and optimum - 3D polytope visualization for 3-variable linear programming: rotate and explore the feasible region - Sensitivity and post-optimal analysis: ranges, shadow prices, and RHS intervals - Transportation problem: North-West Corner, Least-Cost, and Vogel's Approximation (VAM) - MODI / U-V method: optimality test and refinement - Assignment problem: Hungarian algorithm - Job sequencing: 2, 3, and N machines using Johnson's algorithm WHY STUDENTS CHOOSE IT - Step-by-step explanations with every iteration described in plain language - Exact fraction arithmetic to avoid rounding errors - Dedicated math keyboard for fractions, signs, and decimals - Problem history to save, reopen, and edit past problems - 8 languages: English, Spanish, French, Portuguese, Russian, Ukrainian, Arabic, and Persian - No account required

Screenshots

Emily English Coach4 screens
Or Simplex Step4 screens

Verdict

The call

The clearest difference is in-app purchases: Emily English Coach at none against Or Simplex Step's 1. Emily English Coach also leads on ads (none vs shown). Or Simplex Step's advantage is update cadence (every 10 days vs every 5 weeks) and device support (3 vs 1). On price 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

Both are free to download. Or Simplex Step sells 1 one-off in-app purchase. Emily English Coach asks for nothing beyond the download.

UpkeepUpdate frequency

Emily English Coach ships an update every 5 weeks, Or Simplex Step every 10 days. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

Scorecard5 real differences · 3 level
Emily English Coach versus Or Simplex Step: the parameters behind the verdict, then further details
ParameterEmily English CoachOr Simplex Step
PriceFreeFree
Positive reviews0.0% of reviews—
Update frequencyEvery 5 weeksEvery 10 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationSubscription—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size28 MB45 MB
Age rating+44+
DeveloperMarfin LABSBohdan Bezpartochnyi

In-app purchases

None

Emily English Coach

No in-app purchases

1 purchases

Or Simplex Step

One-time1
  • OR Commented Pro$2.99

Questions

Is Emily English Coach free?
Emily English Coach is free to download, with no in-app purchases.
Is Or Simplex Step free?
Or Simplex Step is free to download, with in-app purchases available.
Do Emily English Coach or Or Simplex Step have ads?
Or Simplex Step shows ads; Emily English Coach does not.
Which is updated more often, Emily English Coach or Or Simplex Step?
Emily English Coach ships an update every 5 weeks, and Or Simplex Step every 10 days. Most recently, Emily English Coach was updated on November 5, 2026 and Or Simplex Step on November 6, 2026.

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