Comparison

ExamReadyMath vs Otum

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

Head to head
About

ExamReadyMath

Features
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ExamReady Math is a focused, standards-aligned practice app for Grade 4 students preparing for the New York State math exam. No ads. No data collection. No subscriptions. Just honest practice that actually understands kids' work. WHY IT'S DIFFERENT Most test-prep apps grade "show your work" by keyword-matching kids' explanations. That fails whenever a child gets the right answer in different words. ExamReady uses real multiple-choice reasoning for the "why" steps and numeric equivalence for answers — so 15/8, 1 7/8, and 1.875 all count as the same answer. Kids see exactly what we expected when they miss. VISUAL FRACTIONS YOU CAN SEE Compare 3/5 and 4/10 with shaded bars and a 1/2 benchmark line, not just abstract symbols. The fraction bars use the same strategies the NY State exam expects: benchmark fractions, common denominators, and visual area models. STEP-BY-STEP SCAFFOLDS Multi-credit "Show Your Work" problems break down into clear numeric steps and multiple-choice reasoning. Kids build the full answer one piece at a time, the way Grade 4 teachers actually teach it. FULL TIMED MOCK EXAM A real two-session simulation — Session 1 (15 MC, 25 min) and Session 2 (10 MC + 3 Show-Your-Work, 30 min) with a break screen between. Kids see their score at the end with a per-session and per-domain breakdown. No immediate feedback during the exam, because that's how the real test feels. APPLE PENCIL SCRATCHPAD Pull up a PencilKit canvas on any question to work the problem out by hand. Drawings persist per-question within a session. Works with finger or Apple Pencil. iPAD-OPTIMIZED Two-pane layouts on iPad for "Show Your Work" questions, adaptive fraction bars, and a math keypad that floats with the keyboard. 56 QUESTIONS · 16 DOMAINS · ALL NY STATE STANDARDS Fraction equivalence and comparison (4.NF.1, 4.NF.2), fraction operations (4.NF.3, 4.NF.4), decimals and fractions (4.NF.5–7), place value to 1,000,000 (4.NBT.1–3), multi-digit arithmetic (4.NBT.4–6), multiplicative comparisons (4.OA.1–2), multi-step word problems (4.OA.3), factors and multiples (4.OA.4), number patterns (4.OA.5), measurement conversions (4.MD.1–2), area and perimeter (4.MD.3), line plots (4.MD.4), angles (4.MD.5–7), lines and rays (4.G.1), shape classification (4.G.2), and lines of symmetry (4.G.3). PROGRESS TRACKING FOR PARENTS The Progress tab shows your child's mastery across every domain, their practice streak, and which topics need the most work — so you can focus at-home review time where it helps most. PRIVACY BY DESIGN The app runs 100% offline. Nothing is transmitted anywhere. Progress, scratchpad drawings, and exam history are stored only on your device. No third-party analytics, no advertising SDKs, no account required. Made for ages 9–11. Designed for kids; transparent to parents. ExamReady Math is not affiliated with the New York State Education Department.

About

Otum

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In the AI era, the real advantage isn't writing code—it's understanding how systems work. Otum uses plain, everyday language and clear illustrations to help you understand how frontend, backend, databases, and system architecture actually work—no coding required. You'll finally follow what engineers are talking about, and hand your ideas to AI or your team with clarity. WHY OTUM • Plain language first: an everyday analogy comes before the jargon, so it clicks without memorizing terms • Visual by design: every concept comes with an illustration or flow diagram you grasp at a glance • In-depth Q&A: the questions people get stuck on—and the ones asked most in interviews—explained clearly • Six core topics: Frontend, Backend, Databases, Programming Languages, System Architecture, and real-world Practice WHO IT'S FOR • Creators who want to actually ship their ideas in the AI era • Beginners getting into tech or switching careers • Product, project, and design people who work with engineers • Anyone preparing for technical interviews or building the big picture fast FREE & FULL ACCESS • The technical explanation of every article is free to read • Plain-language sections, diagrams, and in-depth Q&A are premium content • Unlock once, keep forever—no subscription, no monthly fees. Content added later is included at no extra cost Open Otum and start seeing how the tech world really works.

Screenshots

ExamReadyMath3 screens
Otum4 screens

Verdict

The call

The clearest difference is in-app purchases: ExamReadyMath at none against Otum's 1. On price, update cadence, ads and device support 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. Otum sells 1 one-off in-app purchase. ExamReadyMath asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 25, 2026 and October 16, 2026 respectively.

Scorecard1 real difference · 5 level
ExamReadyMath versus Otum: the parameters behind the verdict, then further details
ParameterExamReadyMathOtum
PriceFreeFree
Update frequencyEvery 5 daysEvery 5 days
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad — betteriPhone
Requires iOS17.617.0 — better
Further details — not scored
Size7 MB4 MB
Age rating4+4+
DeveloperRonnie ReyesHe LiNien

In-app purchases

None

ExamReadyMath

No in-app purchases

1 purchases

Otum

One-time1
  • Full Unlock · One-Time Buy$14.99

Questions

Is ExamReadyMath free?
ExamReadyMath is free to download, with no in-app purchases.
Is Otum free?
Otum is free to download, with in-app purchases available.
Do ExamReadyMath or Otum have ads?
Neither ExamReadyMath nor Otum shows ads.
Which is updated more often, ExamReadyMath or Otum?
ExamReadyMath ships an update every 5 days, and Otum every 5 days. Most recently, ExamReadyMath was updated on October 25, 2026 and Otum on October 16, 2026.

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