Atom Calculator vs AmiiBot
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Atom Calculator
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The atom calculator is a tool for calculating the atomic number and the mass number based on numbers of atom components - protons, neutrons, and electrons (or vice versa). In addition, you can define the charge of ions with known numbers of protons and electrons.
AmiiBot
Easily manage and duplicate your Amiibo figures using your iPhone's NFC capabilities. Store and back up your collection, and even create duplicates for use in games like Animal Crossing. Supports over 740 Amiibo figures.
- Amiibo Management
- Amiibo Duplication
- iCloud Sync
- Dark Mode
- NFC Scanning
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AmiiBot is the #1 choice for Amiibo management on your iPhone. AmiiBot allows you to store and duplicate your amiibos via NFC. WHO'S IT FOR: Whether you own a shelf of amiibos or just wanna some villagers on your Animal Crossing New Horizons island, AmiiBot gives you the functions you need. FEATURES: Amiibo Management Amiibo Duplication iCloud Sync Dark mode HOW IT WORKS: AmiiBot using new NFC* features introduced in iOS 13 to scan and copy amiibos. No searching, no browsing, just tap a button and put the amiibo near the phone. *only supported on iPhone. Help: DM @zrzrv5 on twitter or dev@1sec.plus Before You Buy - This App is an Amiibo Management App, not some magical 'summon Raymond to my island' App. It has a built-in database that supports 740+ amiibos. Still, until Nintendo releases a new Amiibo card series, it can not summon new villagers added in New Horizon into your island. - This app won't provide key files.
Screenshots
Verdict
The clearest difference is update cadence: AmiiBot at every 6 days against Atom Calculator's every 35 months. On price, ads, in-app purchases 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
Atom Calculator costs $2.99 and AmiiBot $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Atom Calculator ships an update every 35 months, AmiiBot every 6 days. The most recent releases landed on September 30, 2026 and October 12, 2026 respectively.
| Parameter | Atom Calculator | AmiiBot |
|---|---|---|
| Price | $2.99 | $2.99 |
| Rating | — | 3.9 (135 ratings) — better |
| Positive reviews | — | 61.7% of reviews |
| Number of ratings | — | 135 — better |
| Update frequency | Every 35 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 13.4 |
| Further details — not scored | ||
| Size | 13 MB | 128 MB |
| Age rating | 4+ | 4+ |
| Developer | Gorasiya Vishal Nanjibhai | Rui Zhou |
Bugs and requests
Atom Calculator
Not enough reviews yet to summarise bugs or requests.
AmiiBot
Reported bugs
8 issues- Amiibo duplication fails with error messages
- NFC writing fails intermittently despite correct setup
- App crashes on launch for some users
- Cannot import key files - shows 'invalid file' error
- NFC detection issues on certain iPhone models
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- Some amiibos cannot be written (Sanrio series reported)
- App becomes unresponsive after previous use
- Write popup doesn't appear in some scenarios
Requested features
7 requests- Update amiibo library with newer releases (TotK Champions, Splatoon 3 idols, Smash Bros Wave 2)
- Add ability to erase/reformat NFC tags
- Support for rewritable tags like PowerTags
- Improved developer support and documentation
- In-app guidance for obtaining key files
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- Feature to show where to purchase amiibos online
- Better error messages and troubleshooting
In-app purchases
Atom Calculator
No in-app purchases
AmiiBot
No in-app purchases
