Comparison

Human Skeleton vs AP Environmental Science Quiz

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

Head to head
About

Human Skeleton

This app helps children learn the names and locations of human skeleton bones through interactive modes. It includes learning, self-testing, and timed challenges to reinforce knowledge. The latest version adds more bone groups for comprehensive study.

Highlights
  • Learn bone names and locations
  • Interactive bone identification
  • Self-paced knowledge testing
  • Timed challenge mode
  • Detailed bone information
  • Progress tracking and scoring
Features
Read full description

This educational App has been specifically designed to support children who need to learn the key bones in the human skeleton. By popular demand, Version 2 now includes an introduction to the bones in the Skull, Spine, Foot and Hand. To ensure the learning process is comprehensive, 3 fun modes have been included: Learn the names of the primary bones - This uses a list of the key bones; tap on the name of any bone and a blue dot will indicate the bone’s location - Tap on the ‘INFO’ button and a pop-up will appear to give you more information about that bone -There is no hurry. Keep on tapping bone names until you think you know them all and you’ll be ready to test your knowledge Name that bone allows you to test your knowledge at your own pace: - A red-dot will appear on a bone. You then tap the name of the bone from the list on the right -The App will keep the score of how many you get correct or wrong The good news is that each time you get one correct its name disappears from the list; so it gets easier! -Try this a few times and you’ll soon be ready for the final timed test - If you are getting some wrong go back and learn the names of the bones again Once you know the names of the bones then have some fun and play ‘time challenge’ and see if you can name all the bones before the time runs out. - A pop-up will appear with the name of a bone - Tap OK and then tap on the black dot which points to the bone If you forget the name of the bone, which you have been asked to find, just look at the time-line at the bottom of the screen; it is written there too. - Once again it keeps the score; see if you can get them all right before the time runs out: it’s quite challenging. And if you do then you definitely know the names of the major bones in the body. - When you finish a pop-up will tell you how many you got correct and if you finished before the time ran out you’ll be able to boast to your friends how many seconds you had left. www.unit11apps.com | facebook.com/unit11apps

About

AP Environmental Science Quiz

Features
Read full description

AP Environmental Science Flashcards is the all-in-one study tool built to help you conquer every concept on the College Board AP Environmental Science curriculum. With 252 flashcards and 720 AP-level multiple-choice quiz questions spanning all 9 units, this app puts serious exam prep right in your pocket. FLASHCARDS THAT ACTUALLY TEACH Every flashcard is designed to do more than test recall. Each card presents a thought-provoking question on the front, then delivers a comprehensive answer with key concepts on the back. It's like having a tutor who never gets tired of explaining things. QUIZ MODE THAT CHALLENGES YOU Put your knowledge to the test with 720 carefully crafted multiple-choice questions. Every question comes with a detailed explanation — so when you get one wrong, you'll understand exactly why. When you get one right, you'll know you truly earned it. STAR YOUR FAVORITES Found a tricky concept? Star it. Build your own personalized study deck of the cards you need to review most. Your starred cards stay with you across sessions so you can keep hammering the tough stuff. ALL 9 AP ENVIRONMENTAL SCIENCE UNITS Unit 1 — The Living World: Ecosystems Energy flow, trophic levels, food chains, food webs, nutrient cycling, and primary productivity. Unit 2 — The Living World: Biodiversity Ecosystem diversity, species interactions, island biogeography, ecological succession, and biodiversity hotspots. Unit 3 — Populations Population ecology, carrying capacity, growth models, demographic transition, and human population dynamics. Unit 4 — Earth Systems & Resources Plate tectonics, soil composition, Earth's atmosphere, watersheds, and natural resources. Unit 5 — Land & Water Use Agriculture, forestry, rangelands, urban development, sustainable land use, mining, and fishing. Unit 6 — Energy Resources & Consumption Renewable and nonrenewable energy, fossil fuels, nuclear energy, solar, wind, and hydroelectric power. Unit 7 — Atmospheric Pollution Air pollutants, smog, acid rain, ozone depletion, indoor air quality, and the Clean Air Act. Unit 8 — Aquatic & Terrestrial Pollution Water pollution, sewage treatment, solid waste, hazardous waste, biomagnification, and environmental legislation. Unit 9 — Global Change Climate change, greenhouse effect, ocean acidification, invasive species, endangered species, and global conservation strategies. FEATURES YOU'LL LOVE - 252 expertly crafted flashcards with detailed answers - 720 AP-level multiple-choice quiz questions - Thorough explanations for every quiz question - Star system to bookmark cards for focused review - Progress tracking across all units - Beautiful native design for iPhone & iPad - iCloud sync keeps your progress everywhere - Works completely offline — study anywhere - Free to download and start learning immediately PREMIUM SUBSCRIPTION Unlock the full AP Environmental Science experience: - All 36 subtopics — 252 flashcards - 720 AP-level quiz questions - No ads — uninterrupted study - Unlimited starred cards - iCloud sync across devices Subscription Plans: - Monthly: $4.99/month - Yearly: $49.99/year (Best Value) Payment will be charged to your Apple ID account at the confirmation of purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current period. Manage your subscription in Account Settings. Privacy Policy: https://chalplex.blog/apps/ap-environmental-science/ap-environmental-science-flashcards.php Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Download AP Environmental Science Flashcards and start studying smarter today. Your 5 is waiting.

Screenshots

Human Skeleton4 screens
AP Environmental Science Quiz4 screens

Verdict

The call

The clearest difference is price: AP Environmental Science Quiz at Free against Human Skeleton's $1.99. AP Environmental Science Quiz also leads on update cadence (every 3 weeks vs every 59 months). Human Skeleton's advantage is in-app purchases (none vs 2) and ads (none vs shown). On 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

AP Environmental Science Quiz is free to download; Human Skeleton costs $1.99 up front. AP Environmental Science Quiz sells 2 in-app purchases, starting at $4.99 per month. Human Skeleton asks for nothing beyond the download.

UpkeepUpdate frequency

Human Skeleton ships an update every 59 months, AP Environmental Science Quiz every 3 weeks. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
Human Skeleton versus AP Environmental Science Quiz: the parameters behind the verdict, then further details
ParameterHuman SkeletonAP Environmental Science Quiz
Price$1.99Free — better
Rating3.0 (2 ratings) — better—
Positive reviews73.3% of reviews—
Number of ratings2 — better—
Update frequencyEvery 59 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size57 MB16 MB
Age rating4+4+
DeveloperUnit11Chaleepa Mallawa

In-app purchases

None

Human Skeleton

No in-app purchases

2 purchases

AP Environmental Science Quiz

Subscriptions2
  • Monthly$4.991 Month
  • Yearly$49.991 Year

Questions

Is Human Skeleton free?
Human Skeleton costs $1.99, with no in-app purchases.
Is AP Environmental Science Quiz free?
AP Environmental Science Quiz is free to download, with in-app purchases available.
Do Human Skeleton or AP Environmental Science Quiz have ads?
AP Environmental Science Quiz shows ads; Human Skeleton does not.
Which is updated more often, Human Skeleton or AP Environmental Science Quiz?
Human Skeleton ships an update every 59 months, and AP Environmental Science Quiz every 3 weeks. Most recently, Human Skeleton was updated on October 28, 2026 and AP Environmental Science Quiz on October 24, 2026.

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