Bug Identifier vs Mental Math
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bug Identifier
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Spotted an unfamiliar bug? Open Buzzby to get a reliable identification, practical advice, and instant answers. Buzzby is the perfect app to identify insects, understand their behavior, and learn how to react when you encounter them. Whether you're curious, a parent, a gardener, or just out for a walk, Buzzby offers a fun, educational, and useful experience. KEY FEATURES - Fast insect identification Take a photo and discover the insect’s name, description, and key visual and behavioral traits. - Risk assessment Buzzby tells you whether the insect might be harmful to humans, pets, or crops. - Prevention and control tips Learn how to avoid certain insects and how to handle them if they’re considered pests—with responsible and effective solutions. - Chat with Buzzby, your AI entomology expert Ask questions directly to Buzzby, the intelligent assistant trained to help you better understand insects, check identifications, or dive deeper into entomology. - Clear and structured information Each insect identified is presented in a well-organized format, with all the key facts and a fun detail to remember. - Identification history Access a personal list of all the insects you’ve identified, along with the dates of each observation—ideal for tracking your discoveries or reviewing previous encounters. LEARN, OBSERVE, AND TAKE ACTION Buzzby goes beyond identification. It helps you understand each insect’s role in the ecosystem, while providing the right guidance when a species poses a risk or becomes a nuisance. DOWNLOAD BUZZBY AND LET NATURE SPEAK TO YOU. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Mental Math
Sharpen your mental math skills with daily practice. This app uses spaced repetition to help you master concepts like fractions, percentages, and algebra. It offers two modes for flexible learning and provides real-life examples of how math is used every day.
- Spaced repetition system (SRS)
- Covers multiplication, division, fractions, percentages, algebra
- Zen and Chrono practice modes
- Visible progress tracking
- Real-life math examples
- Home screen widgets
- Customizable reminders
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10 minutes a day to keep your mental math sharp. Whether you're in middle school, in high school, or an adult who wants to reconnect with math, Kalc helps you forge solid mental reflexes, without cramming. Spaced repetition system (SRS): concepts you master space out over time, the ones you miss come back the next day. The method known to deliver the most learning per minute practiced. WHO IT'S FOR · UK students (Year 7-10), US students (Grade 6-9) · Other English-speaking systems (Canada, Australia, Ireland, NZ) · Spanish-speaking students (Spain ESO, Mexico secundaria/preparatoria) · French-speaking students (France, Belgium, Switzerland, Quebec) · Adults who want to get back fluency with mental math Each user picks their school system during onboarding. Content and examples adapt. WHAT KALC COVERS · Multiplication and division (times tables, decimals, signed) · Fractions (simplification, operations, fraction of a whole) · Percentages (calculation, increase, discount, compound change) · Powers and square roots · Algebra and order of operations · Addition and subtraction of signed integers TWO PRACTICE MODES · Zen mode: at your own pace, no pressure, to consolidate the basics · Chrono mode: against the clock, to build speed under exam conditions VISIBLE PROGRESS Every skill has its own level and progress bar. You see exactly where you stand and what's left to master. IN REAL LIFE Every session ends with a concrete example of how this skill serves you day to day: splitting a restaurant tab, reading a paycheck, working out a discount, planning a budget. Mental math is something you actually use. HOME SCREEN WIDGETS Track your progress straight from your iOS home screen, without opening the app. Streak, XP and skills in progress at a glance. MEASURED REMINDERS Up to 5 reminders over the first 3 weeks, off at any time. No spam, no guilt-tripping. ONE-TIME PURCHASE, NO SUBSCRIPTION Kalc is free to download (1 skill available without purchase). Full access unlocks with a single purchase (lifetime or 1 year non-renewing). No traps, no hidden paywall. PRIVACY All your data stays on your device and syncs through your personal iCloud account. No ads, no advertising tracking, no cookies. Kalc is for people who want real progress in mental math. Privacy policy: https://lmtdigitalcreations.com/kalc/privacy.html Terms of use: https://lmtdigitalcreations.com/kalc/terms.html
Screenshots
Verdict
Bug Identifier and Mental Math are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Bug Identifier sells 2 in-app purchases, starting at $0.99 per 7 days and Mental Math sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
| Parameter | Bug Identifier | Mental Math |
|---|---|---|
| Price | Free | Free |
| Rating | — | 1.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | — | Fortnightly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.0 | 17.6 — better |
| Further details — not scored | ||
| Size | 15 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Inkolab | LMT Digital Creations |
In-app purchases
Bug Identifier
- Premium Access3 Days trial$0.997 Days
- Premium Access$24.991 Year
Mental Math
- Plan Annuel$17.99
- Accès à vie$29.99
Questions
Is Bug Identifier free?
Is Mental Math free?
Do Bug Identifier or Mental Math have ads?
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