Kepler's Laws vs Bone Zone
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kepler's Laws
Explore animated visualizations and interactive tasks designed to help you grasp Kepler's laws of planetary motion. This educational tool offers a clear way to understand complex astronomical concepts through visual aids and practical exercises.
- Animated visualizations
- Interactive tasks
- Understanding planetary motion
- Educational tool
- Astronomy concepts
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Animations and tasks that facilitate the understanding of Kepler's laws.
Bone Zone
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Discover the prehistoric world hiding beneath your feet with Bone Zone — interactive geological maps that turn every hike into a journey through deep time. EXPLORE THE GEOLOGY AROUND YOU • Detailed geological maps for all 48 continental states • Formations colored by geologic age using international standard colors • GPS centers the map on your location and your state • Tap any formation to learn what it is, how it formed, and how old it is COULD YOU FIND A FOSSIL HERE? • Every formation gets a plain-language fossil verdict — from "Hot Spot" to "Wrong Rock" — based on its rock type and geological age • See documented fossil finds near the exact spot you tapped, from the Paleobiology Database's scientific records • Fossil pins show real discoveries: species, age, and taxonomy • Browse actual museum specimen photos and records from collections across the country (iDigBio) LEARN AS YOU EXPLORE • Interactive learning center covering rocks, ages, and fossil types • A geological timeline from the first life to the ice ages • Field safety guidelines and collecting ethics • Clear guidance on laws and land access — know before you dig BUILT FOR REAL ADVENTURES • State data downloads on demand and stays on your device • Perfect for rockhounds, students, educators, scout troops, and anyone curious about what's underfoot • Promotes responsible exploration and Leave No Trace principles FREE WITH ADS — REMOVE THEM FOREVER Bone Zone is free to use, supported by small banner ads that never cover the map. An optional one-time purchase removes all ads permanently. No subscriptions, no accounts. From shark teeth on beaches to ancient coral reefs in your local hills, start your journey through deep time today. Privacy: https://bone-zone.app/privacy-policy.html Terms: https://bone-zone.app/terms-of-service.html
Screenshots
Verdict
The clearest difference is in-app purchases: Kepler's Laws at none against Bone Zone's 1. Kepler's Laws also leads on ads (none vs shown) and iOS requirement (12.0 vs 18.2). On price, update cadence 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
Both are free to download. Bone Zone sells 1 in-app purchase, starting at $9.99 per year. Kepler's Laws asks for nothing beyond the download.
Kepler's Laws ships an update every 7 months, Bone Zone every 10 months. The most recent releases landed on October 12, 2026 and October 28, 2026 respectively.
| Parameter | Kepler's Laws | Bone Zone |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 7 months — better | Every 10 months |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 12.0 — better | 18.2 |
| Further details — not scored | ||
| Size | 16 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Vladimir Vascak | Brandon Tate |
In-app purchases
Kepler's Laws
No in-app purchases
Bone Zone
- Bone Zone Premium3 Days trial$9.991 Year









