Comparison

SpecimenPro vs Planetary Atlas

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

Head to head
About

SpecimenPro

Catalog and manage any type of collection with advanced tools for documentation, measurement, and organization. Features include QR code tracking, AR measurements, and offline functionality, making it ideal for both personal hobbyists and professional institutions.

Highlights
  • QR code tracking and scanning
  • AR measurements for dimensions
  • Photo documentation with markup
  • Customizable metadata fields
  • Offline functionality
  • iCloud sync
  • CSV and SQLite export
Features
Read full description

Whether you have ten treasures or ten thousand, SpecimenPro turns your collection into something you can search, measure, map, and share. It brings the reliability of museum software to anyone who collects anything. Rocks, fossils, shells, plants, coins, trading cards, LEGO sets: if you collect it, you can catalog it. Geologists, paleontologists, biologists, chemists, museum professionals, and hobbyists all get the same powerful tools, from personal finds to institutional collections. CAPTURE EVERYTHING - Multiple photo types: specimen, drawer, detail, and document views - Photo markup with drawing tools - Voice notes for quick observations - File attachments: PDFs, spreadsheets, and images - On-board OCR reads labels with no internet required - Optional Apple Vision text scanning (opt-in) MEASURE AND DOCUMENT - AR measurements: length, width, height, and volume - GPS location extracted from your photos - Custom metadata fields for any specimen type, configurable per collection - Auto-numbered specimens, with custom IDs to match your own cataloging system FIND ANYTHING INSTANTLY - QR code generation and scanning for instant lookup - Location QR codes for quick filtering - Tags, searchable metadata, and advanced search BUILT FOR THE FIELD - Works completely offline, so no signal is no problem - Runs great on iPhone, iPad mini, and iPad - Battery-efficient for long field days - Photo compression saves storage space - Rugged workflow, refined interface ORGANIZE AT ANY SCALE - Multiple collections: museum, field expeditions, or custom - Physical location tracking by cabinet, drawer, shelf, and more (customizable) - Transaction tracking for loans, exhibitions, and photography - Contact management for borrowers and institutions - Overdue loan alerts IN-APP EVENTS - Virtual collecting experiences: museum exhibits, gem shows, and field trips - Scan QR codes at physical locations to collect specimens - Each event automatically creates a collection when you scan your first specimen - Badges, progress tracking, and achievements SYNC, EXPORT, AND SHARE - iCloud sync across all your devices (opt-in) - Offline-first design with automatic conflict resolution - Share collections with collaborators - Import from other devices or from CSV, matched to your data scheme - Export text data to CSV - Export to SQLite for Python and R analysis, including all data - Import/export templates for sharing DATA INTEGRITY - SQLite database with validation and constraints - Transaction-based operations ensure consistency - Automatic backup of all data and media (opt-in) - Easy recovery and migration PRIVACY, PLAINLY - No analytics or tracking - No third-party SDKs - All data is stored locally or in your private iCloud - You own your data, completely FREE TO START SpecimenPro Lite is the free default installation: - Unlimited access to in-app events - Up to 3 collections, with up to 10 specimens each - One starter collection with eight specimens included - One in-app purchase unlocks unlimited collections and specimens

About

Planetary Atlas

Explore detailed 3D models of planets, moons, and asteroids. Zoom from a solar system overview down to individual craters, with all features accurately named. Measure distances and compare celestial bodies.

Highlights
  • Interactive 3D planetary models
  • Zoomable from solar system to crater level
  • Accurate naming of celestial features
  • Measurement tools for distances
  • Comparison of celestial body sizes
  • Offline exploration of mapped worlds
Features
Read full description

Planetary Atlas turns open planetary-science imagery into an atlas you can fly through. Start at the whole solar system, pick a world, and pinch your way down from the full globe to a single crater floor — with the name of everything you pass. FOURTEEN WORLDS Four planets, seven moons, Ceres and two asteroids. 829 imagery layers and 15,025 named features, all built from open data published by NASA, the USGS and the mission teams who gathered it. SEE THE REAL SURFACE Every world is assembled from the actual spacecraft mosaics — Lunar Reconnaissance Orbiter at the Moon, the Mars Reconnaissance Orbiter and Viking at Mars, Cassini out at Saturn's moons. Where a mission mapped a place in detail, you can keep zooming until you are looking at metres per pixel. NAMED FEATURES Craters, maria, valleys, ridges, plains and landing sites, labelled with the names the International Astronomical Union gave them. Search for one, or just wander until something catches your eye. MEASURE THINGS Draw across a crater to get its width. Compare a canyon on Mars against one you already know on Earth. A to-scale view sets the worlds side by side at their true relative sizes, which is the fastest way to feel how small Ceres is and how far Jupiter's moons outrun our own. BUILT FOR CURIOSITY No account. No feed. No advertising. The atlas opens where you left it and gets out of the way. THE MOON IS FREE Explore the entire Moon — every layer, every named feature, the full set of tools — without paying anything. Atlas Pro opens the other thirteen worlds. ATLAS PRO A subscription unlocks all 14 worlds and every tool, available monthly or yearly, or as a one-time lifetime purchase. Family Sharing is supported on all three. Terms of Use (EULA): https://planetatlas.org/terms Privacy Policy: https://planetatlas.org/privacy Questions, corrections, or a feature you want mapped: hello@planetatlas.org

Screenshots

SpecimenPro4 screens
Planetary Atlas4 screens

Verdict

The call

The clearest difference is monetization model: SpecimenPro at free against Planetary Atlas's free with in-app purchases. Planetary Atlas's advantage is iOS requirement (15.0 vs 18.6). On price, rating, ratings volume and ads 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. SpecimenPro sells 1 one-off in-app purchase and Planetary Atlas sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for SpecimenPro against 5.0 for Planetary Atlas. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Scorecard2 real differences · 8 level
SpecimenPro versus Planetary Atlas: the parameters behind the verdict, then further details
ParameterSpecimenProPlanetary Atlas
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings11
Update frequencyEvery 3 days—
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.615.0 — better
Further details — not scored
Size18 MB64 MB
Age rating4+4+
DeveloperAaron CelestianAaron Hughes

Customer experience

SpecimenPro

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Planetary Atlas

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

SpecimenPro

One-time1
  • Full Version$9.99
3 purchases

Planetary Atlas

Subscriptions2
  • Atlas Pro Monthly$1.991 Month
  • Atlas Pro Yearly$12.991 Year
One-time1
  • Atlas Pro Lifetime$29.99

Questions

Is SpecimenPro free?
SpecimenPro is free to download, with in-app purchases available.
Is Planetary Atlas free?
Planetary Atlas is free to download, with in-app purchases available.
Which has better reviews, SpecimenPro or Planetary Atlas?
SpecimenPro and Planetary Atlas are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do SpecimenPro or Planetary Atlas have ads?
Neither SpecimenPro nor Planetary Atlas shows ads.

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