Comparison

Periscope Watchkeeper vs Bug Identifier

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

Head to head
About

Periscope Watchkeeper

Train your "eyes only" submarine periscope skills with this educational application. It offers various target types, difficulty levels, and guided tutorials to help users refine their observational abilities.

Highlights
  • Multiple target types
  • Adjustable difficulty levels
  • Passive Range and Look Interval mode
  • Night mode
  • Distance Of Track calculations
  • Duration Of Attack calculations
  • Guided tutorials
Features
Read full description

The only publicly available submarine periscope training application focused on "eyes only" skills. Suitable for new submariners or those refining their skills. Features: - Seven target types: Arleigh Burke, Zumwalt, QM2, Daring class, Sigma, 052D, and Gorshkov - Four difficulty levels for the ATB / AOB game mode - Up to three targets for the Passive Range and Look Interval mode - Night mode - Distance Of Track calculations - Duration Of Attack calculations - Guided tutorials for every game mode and configuration Any feedback, customisation requests, bug reports or general comments are all welcome.

About

Bug Identifier

Instantly identify insects and spiders by taking or uploading a photo. Access a vast database with detailed information, track your discoveries, and learn about potential dangers or care for insect pets. Offers premium features like an AI chat assistant and ad-free experience.

Highlights
  • Instant AI recognition of over 14,000 species
  • Detailed information on identified insects
  • Personal insect collection builder
  • Poison and bite identification
  • Pest management and pet care information
  • AI chat assistant (premium)
Features
Read full description

Discover the World of Insects with Insect Identification! Get ready to explore, learn, and identify insects like never before. With Insect Identification, you can take or upload a photo of any insect or spider, and our advanced AI technology will instantly provide accurate identification from a database of over 14,000 species. Whether you want to recognize pests, learn about pet insects, or identify bites, our app has everything you need. Key Features: • Instant Recognition: Identify over 14,000 species of insects and spiders with an impressive accuracy rate of 92%, with more than two-thirds of results appearing in the top 3. • Comprehensive Information: Access a vast insect database and detailed information about species without limits, even without a premium account. • Build Your Collection: Save the insects you identify to your personal collection and track your discoveries. • Check for Poison or Bites: Curious if an insect is poisonous or responsible for a bite? Our app provides detailed, trusted information. • Fight Pests or Care for Pets: Whether you’re dealing with bed bugs, checking for pests, or caring for an insect as a pet, we’ve got you covered. Why Go Premium? • Unlimited Photo Recognition: Instantly identify insects and spiders by simply taking a photo. • AI Chat Assistant: Ask questions and get expert advice about insects directly in the app. • Ad-Free Experience: Enjoy exploring the insect world without distractions. With Insect Identification Premium, users enjoy: • Weekly Subscription: $7.99/week • Yearly Subscription: $39.99/year • Lifetime Access: $199.99 (one-time payment) All users can try the premium features for free for 3 days with our trial offer. Plus, exclusive discounts may be available in-app for even greater savings! Terms of service: https://legal.niroapps.com/terms-of-use Privacy Policy: https://legal.niroapps.com/privacy Contact us: niro.identification@gmail.com Learn more about Insect Identification at: https://niroapps.com/

Screenshots

Periscope Watchkeeper4 screens
Bug Identifier4 screens

Verdict

The call

The clearest difference is review sentiment: Periscope Watchkeeper at 100% against Bug Identifier's 20%. Periscope Watchkeeper also leads on in-app purchases (none vs 10) and iOS requirement (12.0 vs 14.0). Bug Identifier's advantage is price (Free vs $14.99) and update cadence (every 4 weeks vs every 19 months). On 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

Bug Identifier is free to download; Periscope Watchkeeper costs $14.99 up front. Bug Identifier sells 10 in-app purchases, starting at $7.99 per month. Periscope Watchkeeper asks for nothing beyond the download.

UpkeepUpdate frequency

Periscope Watchkeeper ships an update every 19 months, Bug Identifier every 4 weeks. The most recent releases landed on November 3, 2026 and November 12, 2026 respectively.

Scorecard6 real differences · 4 level
Periscope Watchkeeper versus Bug Identifier: the parameters behind the verdict, then further details
ParameterPeriscope WatchkeeperBug Identifier
Price$14.99Free — better
Rating—4.3 (8.9K ratings) — better
Positive reviews100.0% of reviews — better20.1% of reviews
Number of ratings—8.9K — better
Update frequencyEvery 19 monthsEvery 4 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.0 — better14.0
Further details — not scored
Size131 MB178 MB
Age rating4+4+
DeveloperDzeba SystemsPicture & Photo Identifier Company LTD

Customer experience

Periscope Watchkeeper

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bug Identifier

All ratings8,770 ratings
Positive81.5%
Neutral5.1%
Negative13.4%
Written reviews209 reviews
Positive20.1%
Neutral1.4%
Negative78.5%

Bugs and requests

Periscope Watchkeeper

Not enough reviews yet to summarise bugs or requests.

Bug Identifier

Reported bugs

3 issues
  • App crashes on launch
  • Scanning process gets stuck at 98%
  • Inability to forward identified insect photos

Requested features

3 requests
  • Free trial for full app functionality
  • Option to save identified insects
  • Integration with other nature apps

In-app purchases

None

Periscope Watchkeeper

No in-app purchases

10 purchases

Bug Identifier

Subscriptions10
  • Identification 1 Month Premium$7.991 Month
  • Identification 1 Week Premium3 Days trial$7.997 Days
  • Identification 1 Week Premium$7.997 Days
Show 7 more
  • Identification 1 Year Premium3 Days trial$24.991 Year
  • Identification 1 Year Premium$24.991 Year
  • Identification 1 Year Premium$29.991 Year
  • Identification 1 Year Premium3 Days trial$29.991 Year
  • 1 Year Premium1 Year trial$29.991 Year
  • Identification 1 Year Premium$39.991 Year
  • Identification 1 Year Premium1 Year trial$39.991 Year

Questions

Is Periscope Watchkeeper free?
Periscope Watchkeeper costs $14.99, with no in-app purchases.
Is Bug Identifier free?
Bug Identifier is free to download, with in-app purchases available.
Do Periscope Watchkeeper or Bug Identifier have ads?
Neither Periscope Watchkeeper nor Bug Identifier shows ads.
Which is updated more often, Periscope Watchkeeper or Bug Identifier?
Periscope Watchkeeper ships an update every 19 months, and Bug Identifier every 4 weeks. Most recently, Periscope Watchkeeper was updated on November 3, 2026 and Bug Identifier on November 12, 2026.

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