Comparison

InvertKeep vs Exuvia

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

Head to head
About

InvertKeep

Manage your invertebrate collection with detailed logging for care, molts, and feeding. Access a species database with care information and hazard flags. Pro features include breeding tracking and unlimited enclosures.

Highlights
  • Track enclosures with photos and details
  • Log feeding, watering, and health history
  • Monitor molts and life stages
  • Smart feeding and watering reminders
  • Species database with care snapshots
  • Breeding Lab for pairings and egg sacs
  • QR label generation
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 • Track every enclosure with photos, sex, size, and acquisition details. • Organize by location and shelf, with search, sort, filters, and drag-to-reorder. • Keep a full history of feeding, watering, environment, and health logs for each animal. • Follow molts and life stages, including instars for slings and metamorphosis stages for insects. NEVER MISS A FEEDING • Smart feeding and watering reminders, tuned per animal or per species. • A home-screen widget that shows who needs attention today. • Overdue alerts so nothing slips through the cracks. SPECIES DATABASE • 1,000+ species with care snapshots: temperament, size, growth, temp/humidity, region, keeper level. • Clear hazard flags for medically significant venom and urticating hairs. • Have an elusive species not in our database? You can also add your own database entries! BREEDING LAB (Pro) • Track pairings, egg sacs, incubation timers • Record sling batches • Split communal enclosures. MADE FOR KEEPERS • QR labels (Avery + custom sizes, AirPrint) • For-sale listing generator • iCloud sync, backup & restore • 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 — 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 — 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 every 3 weeks) and iOS requirement (16.4 vs 26.0). On price, 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

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 every 3 weeks, Exuvia daily. Both last shipped on October 31, 2026.

Scorecard3 real differences · 6 level
InvertKeep versus Exuvia: the parameters behind the verdict, then further details
ParameterInvertKeepExuvia
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 weeksDaily — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad — betteriPhone
Requires iOS26.016.4 — better
Further details — not scored
Size311 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 every 3 weeks, and Exuvia daily. Most recently, InvertKeep was updated on October 31, 2026 and Exuvia on October 31, 2026.

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