Comparison

InvertKeep vs Exuvia

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

Head to head
About

InvertKeep

Features
Read full description

InvertKeep is the all-in-one keeper's companion for tarantulas, scorpions, isopods, millipedes, mantises, and the rest of your invertebrate collection. Log care, track molts, get feeding reminders, and look up species all in one clean, fast app. YOUR COLLECTION โ€ข Track every enclosure with photos, sex, size, and acquisition details. โ€ข Organize by location and shelf, with search, sort, filters, and drag-to-reorder. โ€ข Keep a full history of feeding, watering, environment, and health logs for each animal. โ€ข Follow molts and life stages, including instars for slings and metamorphosis stages for insects. NEVER MISS A FEEDING โ€ข Smart feeding and watering reminders, tuned per animal or per species. โ€ข A home-screen widget that shows who needs attention today. โ€ข Overdue alerts so nothing slips through the cracks. SPECIES DATABASE โ€ข 1,000+ species with care snapshots: temperament, size, growth, temp/humidity, region, keeper level. โ€ข Clear hazard flags for medically significant venom and urticating hairs. โ€ข Have an elusive species not in our database? You can also add your own database entries! BREEDING LAB (Pro) โ€ข Track pairings, egg sacs, incubation timers โ€ข Record sling batches โ€ข Split communal enclosures. MADE FOR KEEPERS โ€ข QR labels (Avery + custom sizes, AirPrint) โ€ข For-sale listing generator โ€ข iCloud sync, backup & restore โ€ข iPad, Dynamic Type, VoiceOver, Differentiate Without Color. FREE & PRO Free for up to 10 enclosures. A one-time InvertKeep Pro unlock adds unlimited enclosures and the Breeding Lab. No subscriptions. Ever. Your data stays yours: stored on your device and your private iCloud. No personal data collected, no ads, no trackers.

About

Exuvia

Features
Read full description

A keeping journal for tarantulas and other spiders. Your collection lives on the device. Everything works with no signal and no account; signing in adds sync between devices and a backup. THE JOURNAL Feedings, refusals, moults, rehousings, water top-ups, notes. Each entry carries a full timestamp, and any of them can be corrected later. GROWTH THAT COUNTS ITSELF A moult advances the animal a stage and can carry a photograph, so the timeline shows it at each instar with its measured size charted over time. SPECIES FROM A PHOTOGRAPH Point the camera at a spider and the app reads it, offering candidates with a confidence for each. Works before you make an account. CARE THAT KNOWS THE SPECIES Each species carries its own profile: humidity, temperature range, and how often animals of that species and stage are usually fed. Reminders follow from it โ€” and can be turned off. Any of it can be set differently for one animal, and a spider known only to its genus can be added as it is. QR TAGS FOR ENCLOSURES Print a tag, stick it on the enclosure, scan it to open that animal. From the app's scanner, or from the system camera. HOME SCREEN WIDGETS Today's care tasks, the animal that needs attention with its growth, and a shortcut to the scanner. ALSO Statistics for the collection, tiles, a list or full-width cards to look at it by, export to CSV, centimetres or inches, Celsius or Fahrenheit. In English, German, Polish, Czech, Portuguese, Russian and Ukrainian, following the language of your phone. Exuvia is the shed skin a spider leaves behind โ€” the record of one more instar, which is what this app is for.

Screenshots

InvertKeep4 screens
Exuvia4 screens

Verdict

The call

The clearest difference is in-app purchases: Exuvia at none against InvertKeep's 1. Exuvia also leads on update cadence (daily vs fortnightly) and iOS requirement (16.4 vs 26.0). On price, ads and device support 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. InvertKeep sells 1 one-off in-app purchase. Exuvia asks for nothing beyond the download.

UpkeepUpdate frequency

InvertKeep ships an update fortnightly, Exuvia daily. Both last shipped on October 9, 2026.

Scorecard3 real differences ยท 3 level
InvertKeep versus Exuvia: the parameters behind the verdict, then further details
ParameterInvertKeepExuvia
PriceFreeFree
Update frequencyFortnightlyDaily โ€” better
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhone, iPad โ€” betteriPhone
Requires iOS26.016.4 โ€” better
Further details โ€” not scored
Size361 MB49 MB
Age rating4+4+
DeveloperJARED WILLIAM COFFMANSergey Zaycev

In-app purchases

1 purchases

InvertKeep

One-time1
  • InvertKeep Pro$4.99
None

Exuvia

No in-app purchases

Questions

Is InvertKeep free?
InvertKeep is free to download, with in-app purchases available.
Is Exuvia free?
Exuvia is free to download, with no in-app purchases.
Do InvertKeep or Exuvia have ads?
Neither InvertKeep nor Exuvia shows ads.
Which is updated more often, InvertKeep or Exuvia?
InvertKeep ships an update fortnightly, and Exuvia daily. Most recently, InvertKeep was updated on October 9, 2026 and Exuvia on October 9, 2026.

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