Comparison

ZAstronomy vs Deep Revision

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

Head to head
About

ZAstronomy

Features
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Features: - ASTRONOMY TODAY- A fun and easy way to keep up to date with what's trending up above.- EVENTS: Know where to be and what to see in South Africa. - PICTURE & VIDEO GALLERY: Explore everything Astronomy in the picture and video gallery, from neighbouring galaxies to behind the scenes of the science. - TOUR POINTS: Locate and discover places to see and visit. - WORKSHOPS: Enhance your skill set with an astronomical factor. We are here to help you develop some skills. - ASTRO QUIZ: Learn and test your knowledge of all things astronomy, here in our quiz category there is a range of difficulties and plenty of questions to explore.

About

Deep Revision

Features
Read full description

Deep Revision turns PSLE Science revision from a pile of assessment books into one focused daily habit โ€” built around how the exam is actually marked, not just generic quizzes. PERSONALISED REVISION PLAN Set your target score and exam date, and Deep Revision builds an adaptive plan around it โ€” from a 120-day Foundation phase all the way to a final 3-day Confidence Builder. Every day has a purpose: Learn, Practice, Mixed Review, Open-Ended Skills, Timed Practice, Mock Exam, or Mistake Fix Day, so revision never feels like the same three tasks on repeat. SMART DAILY MISSIONS Each day's mission is generated from your real quiz performance โ€” accuracy, how long ago you last touched a topic, and how heavily it's tested โ€” so you always work on what actually needs attention, not just the next topic in a list. Complete tasks, build a streak, and earn XP along the way. MOCK EXAMS Three full mock exam papers under real PSLE conditions, covering Forces, Electricity, States of Matter, Food Chains, Life Cycles, the Water Cycle, and more โ€” each with a proper mix of MCQs and open-ended questions, marked the way PSLE marks them. 150+ EXAM-STYLE QUESTIONS Practice by topic or take a mixed quiz pulled from the full syllabus. Every question comes with a clear explanation, not just a right/wrong answer. 165 OPEN-ENDED QUESTIONS WITH MODEL ANSWERS PSLE Science is won or lost on open-ended answers. Deep Revision includes 165 structured questions with full model answers, mark allocations, and examiner tips on exactly the keywords and phrasing that earn marks. ASK & LEARN Type a question in your own words and instantly find the closest matching model answer from the full question bank โ€” built to understand PSLE Science vocabulary, common phrasing, and even typos. (Note: this is a smart search tool, not a live AI tutor โ€” it matches your question against our written question bank rather than generating new answers.) SCIENCE LIBRARY Every PSLE Science topic explained clearly, with key concepts, common mistakes students make, exam tips, and worked examples โ€” a proper reference to fall back on whenever a mission calls for it. PROGRESS TRACKING See your streak, XP, and how each topic is trending over time, so you and your child both know exactly where things stand before exam day. ONE-TIME PURCHASE, NO SUBSCRIPTION Everything above unlocks with a single one-time purchase. No monthly fees, no auto-renewing subscription, no surprise charges. Built for Singapore's PSLE Science syllabus, for students revising independently and for parents who want a clear, structured plan without another subscription to manage.

Screenshots

ZAstronomy4 screens
Deep Revision3 screens

Verdict

The call

The clearest difference is in-app purchases: ZAstronomy at none against Deep Revision's 1. On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Deep Revision sells 1 one-off in-app purchase. ZAstronomy asks for nothing beyond the download.

Scorecard1 real difference ยท 5 level
ZAstronomy versus Deep Revision: the parameters behind the verdict, then further details
ParameterZAstronomyDeep Revision
PriceFreeFree
Update frequencyEvery 4 monthsโ€”
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.0 โ€” better15.1
Further details โ€” not scored
Size71 MB44 MB
Age rating4+4+
DeveloperAlenti TechnologiesNowsath Rifaya

In-app purchases

None

ZAstronomy

No in-app purchases

1 purchases

Deep Revision

One-time1
  • Full Access Unlock$6.99

Questions

Is ZAstronomy free?
ZAstronomy is free to download, with no in-app purchases.
Is Deep Revision free?
Deep Revision is free to download, with in-app purchases available.
Do ZAstronomy or Deep Revision have ads?
Neither ZAstronomy nor Deep Revision shows ads.

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