Comparison

Arachnifiles vs Snake Rules

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

Head to head
About

Arachnifiles

Manage and learn about exotic pets with a comprehensive tracking and educational app. Features detailed pet profiles, husbandry logs, care guides, and a community forum for keepers.

Highlights
  • Detailed pet profiles with customizable cards
  • Husbandry tracking (feeding, molts, substrate)
  • Extensive library of care guides and videos
  • Wishlist for future pet planning
  • Community forum to connect with other keepers
  • Customizable feeders and groups
Read full description

Are you an invert enthusiast—or an all-around exotic pet keeper—looking for a better way to track, learn, and grow as a keeper? Welcome to Arachnifiles, the ultimate all-in-one tracking, learning, and community app for invertebrates and beyond. Arachnifiles goes far beyond basic pet tracking. Built with a beautiful, Pokémon-style card system, the app lets you collect, customize, and manage detailed cards for each of your pets in a visually engaging and highly organized way. Whether you keep tarantulas, true spiders, scorpions, mantids, isopods, millipedes, or even non-inverts like reptiles and amphibians, Arachnifiles adapts to your collection. Track Everything That Matters -Stay on top of your husbandry with powerful, flexible tracking tools: -Feeding schedules with custom feeder types -Molts, growth measurements, and size history -Substrate changes, rehousing's, and maintenance logs -Notes, reminders, and to-dos for each pet -Individual measurement preferences per animal -You can even create custom feeders to make logging feedings faster than ever, and custom groups to organize your collection exactly how you want. Learn & Become a Better Keeper -Arachnifiles isn’t just about tracking—it’s about education. -Access 70+ professionally written care guides -Watch supporting videos to reinforce best practices -Explore the built-in Library to continually expand your knowledge -Whether you’re a beginner or an advanced keeper, Arachnifiles gives you the tools to improve your care and confidence. -Top 50 species profile breakdowns. True stats no one else has! Wishlist & Collection Planning -Dreaming about future additions? -Use the Wishlist feature to track species you want to own, research them ahead of time, and plan your collection responsibly. Connect With Keepers Worldwide -Join a growing community of keepers from around the world: -View other users’ public profiles and collections -See how others house, feed, and care for their animals -Share your own setup, experience, and progress -Customize your public profile, showcase your collection, and connect with like-minded hobbyists who share your passion. Built for Serious Keepers -Arachnifiles was designed from the ground up to be the most complete keeper app available: -Highly customizable tracking -Powerful organization tools -Educational resources -Community interaction -Beautiful, intuitive design Whether you keep one spider or manage an entire collection, Arachnifiles gives you everything you need to be the best keeper you can be. Download Arachnifiles today and take full control of your collection, your learning, and your passion. Available app languages are: English, Chinese, Spanish, French, German, Portuguese, Russian, Korean, and Italian.

About

Snake Rules

Measure the length of reptiles and other animals from a single photo using a reference object. Track growth, organize records, and export data securely on-device.

Highlights
  • Accurate measurements from photos
  • Simple point-marking system
  • Zoom and pan for precision
  • Save and organize animal data
  • Growth tracking with charts
  • Export data to PDF and CSV
  • Works offline
Features
Read full description

Snake Rules — Precise measurements from a single photo Snake Rules makes it easy to measure the length of snakes, lizards, and other animals using just a photo and a simple reference object. Whether you are a keeper, breeder, or enthusiast, you can obtain accurate measurements in seconds — all directly on your device and without collecting any personal data. How it works Take a top-down photo of your animal next to a reference object (a ruler, tape measure, phone, bank card, etc.). Mark the start and end of the reference object to set the scale. Add points along the animal’s body for precise measurement. Adjust points by dragging them for maximum accuracy. Save your results and organize them by individual animals. Everything happens on-device, securely and privately. Features • Accurate measurements using only a photo • Simple and intuitive point-marking system • Zoom and pan to refine precision • Real-time length display • Save and organize multiple animals • Growth tracking with visual charts • Export individual animals or all animals in PDF • Export CSV data for use in other apps • Import and restore animal data at any time • Works offline — no accounts, no tracking, no data collection • Full privacy: your photos and measurements never leave your device Designed for keepers, breeders, and reptile (or other animals) lovers. Track growth over time, maintain accurate records, and store all measurements in one place. Perfect for snakes, lizards, and any animal whose size can be estimated through a reference object. Privacy First Snake Rules does not collect, store, or transmit any personal information. All calculations and data remain entirely on your device.

Screenshots

Arachnifiles4 screens
Snake Rules4 screens

Verdict

The call

The clearest difference is price: Arachnifiles at Free against Snake Rules's $4.99. Arachnifiles also leads on rating (3.9 vs 2.0) and ratings volume (104 vs 1). Snake Rules's advantage is review sentiment (100% vs 58%) and in-app purchases (none vs 6). On update cadence, ads 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

CostPrice · In-app purchases · Ads · Monetization

Arachnifiles is free to download; Snake Rules costs $4.99 up front. Arachnifiles sells 6 in-app purchases, starting at $4.99 per month. Snake Rules asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Arachnifiles holds the better App Store score, 3.9 against 2.0. That said, the two scores are not equally well evidenced: Arachnifiles has 104 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 58% of Arachnifiles's written reviews are positive against 100% of Snake Rules's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard7 real differences · 3 level
Arachnifiles versus Snake Rules: the parameters behind the verdict, then further details
ParameterArachnifilesSnake Rules
PriceFree — better$4.99
Rating3.9 (104 ratings) — better2.0 (1 ratings)
Positive reviews57.6% of reviews100.0% of reviews — better
Number of ratings104 — better1
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better17.6
Further details — not scored
Size83 MB2 MB
Age rating4+4+
DeveloperSolo App Lab LLCAndre Luiz Rodrigues Costa

Customer experience

Arachnifiles

All ratings97 ratings
Positive69.1%
Neutral8.2%
Negative22.7%
Written reviews59 reviews
Positive57.6%
Neutral15.3%
Negative27.1%

Snake Rules

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Arachnifiles

Reported bugs

113 issues
  • Cannot upload images of pets
  • App won't save spider profiles
  • App constantly crashes
  • App does not load scientific name
  • App crashes when adding second pet
Show 108 more
  • Developer removed ad causing issue
  • App used to crash when adding picture
  • Problem was fixed quickly
  • Lost years of data since update
  • Data wiped from app since new update
  • Things aren't saving
  • Cards duplicating randomly
  • Cannot add a single animal to collection
  • Save button does nothing
  • App is completely unusable
  • No data import or export
  • App seems to have given up
  • Feeding reminders can only be done while logging a feeding
  • Molt info is lacking
  • Hard to track trends
  • 'Days hungry' nonexistent
  • 'Days in premolt' nonexistent
  • 'Previous cycle length' nonexistent
  • 'Molt cycle predictions' nonexistent
  • Graphs are neat but clunky
  • Seeing 'last fed/watered' is clunky
  • No way to change date or time formats
  • Date acquired, rehoused, molted, etc. not easy to see 'at a glance'
  • Clunky interface
  • Guesswork or number crunching involved
  • Feeding graph is basically useless
  • Dates in the graph are difficult to read
  • Glitches a lot
  • Keeps losing data
  • Cannot rely on it to be accurate
  • Things saved get erased
  • Cannot add a new Tarantula card
  • Gets rid of uploaded pictures
  • Wishlist genus/species name not saving
  • App not saving feeding/molting logs
  • Pictures constantly deleting themselves
  • Info disappears
  • Not very user friendly
  • Stuff gone after closing app
  • Black page for spiders
  • Pictures have all disappeared
  • Cannot get past start screen
  • Reset password does nothing
  • Password created never works
  • Horrible since update
  • App deleted half of spider index
  • App deleted feeding info
  • Fast feed doesn't always register
  • Needs to be entered more than once to save
  • Crashes when trying to upload a pic
  • Cannot upload more than one photo
  • Hasn't been fixed in a year
  • No idea how to get to some features
  • Hard to update molts and size
  • Hard to edit information
  • Don't know how to delete an entry
  • Don't know how to close a page
  • Constantly crashes when trying to add a picture
  • Lasted a week, only 4 tarantulas listed, no longer opens properly
  • Tells me to turn on notifications but app isn't there
  • App settings don't have turn on notifications setting
  • Keeps opening the same T regardless of selection
  • Crashes every time adding own images
  • Locks up with white screen when viewing saved entry
  • Needs updates for iPads
  • Needs access to ALL photos instead of chosen ones
  • Collection is gone after closing app
  • App crashes when adding a picture
  • Missing pamphobeteus machala
  • Missing Hapalopus sp Columbia
  • Missing Cyriopagopus sp. hati hati
  • Scorpion genus and species has no dropdown
  • Process intimidating for large collections
  • Needs a counting system for efficiency
  • Needs an option to view in list form
  • No copy button for multiple species
  • Some species missing
  • Cannot add Australian species
  • Some info missing for Australian species
  • Bulk feeding entry needed
  • More genus names needed
  • More house photos needed
  • Venom potency options needed
  • Hair kicking option needed
  • Favorites category needed
  • A to feed next category needed
  • DIY setup into care methods needed
  • More genuses to care section needed
  • False widows not categorized correctly
  • Subspecies not available on dropdowns
  • No copy button for multiple species
  • Some species missing
  • Cannot add Australian species
  • Some info missing for Australian species
  • Bulk feeding entry needed
  • More genus names needed
  • More house photos needed
  • Venom potency options needed
  • Hair kicking option needed
  • Favorites category needed
  • A to feed next category needed
  • DIY setup into care methods needed
  • More genuses to care section needed
  • False widows not categorized correctly
  • Subspecies not available on dropdowns
  • Scorpion genus and species has no dropdown
  • Add 'added' notification for wishlist
  • Interactive elements similar to plant watering games

Requested features

27 requests
  • Human-drawn spider pictures
  • Record stats for egg sacs
  • Photo archive for color changes
  • Bulk feeding entry
  • More genus names
Show 22 more
  • More house photos of different genuses
  • Venom potency include (Deadly, lowest)
  • Hair kicking as an option
  • Favorites category over search
  • A to feed next category based on feeding setup
  • DIY setup into care methods
  • More genuses to care section
  • Add False widows to true spider category
  • Add subspecies to dropdowns
  • Scorpion genus and species dropdown
  • Copy button for multiple species
  • Dark mode option
  • Advanced analytics dashboard
  • Add 'added' notification for wishlist
  • Interactive elements like plant watering games
  • Full screen iPad version
  • Option to view in list form
  • Counting system for inventory efficiency
  • Subspecies available on dropdowns
  • Scorpion genus and species dropdown
  • Add 'added' notification when adding T to wishlist
  • Interactive elements similar to plant watering games

Snake Rules

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

Arachnifiles

Subscriptions4
  • Arachnifiles Pro Monthly7 Days trial$4.991 Month
  • Arachnifiles Breeder Monthly$8.991 Month
  • Arachnifiles Pro Yearly7 Days trial$49.991 Year
Show 1 more
  • Arachnifiles Breeder Yearly$89.991 Year
One-time2
  • Arachnifiles Pro Lifetime$99.99
  • Arachnifiles Breeder Lifetime$199.00
None

Snake Rules

No in-app purchases

Questions

Is Arachnifiles free?
Arachnifiles is free to download, with in-app purchases available.
Is Snake Rules free?
Snake Rules costs $4.99, with no in-app purchases.
Which has better reviews, Arachnifiles or Snake Rules?
Arachnifiles is rated higher. Arachnifiles averages 3.9 out of 5 from 104 ratings, while Snake Rules averages 2.0 from 1 ratings.
Do Arachnifiles or Snake Rules have ads?
Neither Arachnifiles nor Snake Rules shows ads.
Which is updated more often, Arachnifiles or Snake Rules?
Arachnifiles ships an update every 3 weeks, and Snake Rules every 3 weeks. Most recently, Arachnifiles was updated on November 3, 2026 and Snake Rules on October 30, 2026.

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