Omni vs Science Explorer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Omni
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Omni is your intelligent knowledge companion. Capture scattered thoughts, build your digital workspace, and find exactly what you need just by asking. Instead of remembering where you saved something, simply ask Omni in natural language. Search by Meaning Stop hunting for keywords. Ask questions naturally, and Omni instantly retrieves the right note using intelligent semantic search. Capture Everything Save ideas, meeting notes, journal entries, shopping lists, and movie recommendations in one clean, distraction-free space. AI-Powered Recall Your notes become an active system. Find forgotten information, summarize content, and rediscover ideas without scrolling through endless folders. Private & Sync-Ready Your data is processed with local intelligence whenever possible and securely synced across your devices, so your knowledge is always available. Capture everything. Find anything. Instantly. Omni is free to play and explore. Upgrade to Omni Plus to unlock unlimited personas, infinite companion memory, and full sanctuary access. Terms of use: https://omni.channel/terms
Science Explorer
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Science Explorer - the smart way to master science! Built for the curriculum, Science Explorer covers Year 7 through Year 10 with 8 topics, 118 levels, and 1,950+ real science questions. YEAR 7-8 TOPICS (10 levels each): - Chemistry — Atoms, elements, reactions & the periodic table (220+ questions) - Biology — Cells, body systems, ecosystems & genetics (200+ questions) - Physics — Forces, energy, electricity & motion (200+ questions) - Earth Science — Rocks, plate tectonics, weather & space (200+ questions) - Scientific Method — Experiments, variables, data & lab safety (200+ questions) YEAR 9-10 TOPICS (20 levels each): - Chemistry II — Bonding, moles, stoichiometry & organic chemistry (250+ questions) - Biology II — DNA, evolution, human physiology & disease (250+ questions) - Physics II — Waves, electromagnetism, nuclear & quantum (250+ questions) - New Space & Universe topic — 80 questions across 8 levels LEARN FROM EVERY MISTAKE: Every question includes a detailed explanation. Correct answers auto-advance so you keep your flow. Wrong answers show the solution — tap to review, then move on. SMART PLACEMENT TEST: A quick placement quiz on first launch determines your starting level automatically. GAMIFIED LEARNING: - Earn 1-3 stars on every level - Build answer streaks for bonus XP - Level up and unlock 30 achievements - Compete on the global leaderboard - Complete the daily challenge for extra rewards 1,950+ QUESTIONS across 110 levels — every quiz draws from a large pool so it's different every time. All aligned to the Curriculum. Created by A Star Learner — helping students achieve their best.
Screenshots
Verdict
Omni and Science Explorer are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Neither carries in-app purchases, so what you see is what you pay.
Omni ships an update every 2 weeks, Science Explorer every 9 days. The most recent releases landed on October 1, 2026 and October 2, 2026 respectively.
| Parameter | Omni | Science Explorer |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 129 MB | 30 MB |
| Age rating | 17+ | 4+ |
| Developer | Omnichannel | Dung Ba Nguyen |
In-app purchases
Omni
No in-app purchases
Science Explorer
No in-app purchases









