# Atom Calculator vs AmiiBot

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.

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.

## The numbers

| Metric | Atom Calculator | AmiiBot |
| --- | --- | --- |
| Price | $2.99 | $2.99 |
| Rating | — | **[3.9 (135 ratings)](https://appshunter.io/ios/app/amiibot/id1514835611/reviews)** |
| Number of ratings | — | **135** |
| Positive reviews | — | 61.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 35 months | **Every 6 days** |
| Monetization | — | Paid |
| Size | 13 MB | 128 MB |
| Requires iOS | **12.0** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gorasiya Vishal Nanjibhai](https://appshunter.io/developer/1287086933) | [Rui Zhou](https://appshunter.io/developer/1089847701) |

## What reviewers say

### Atom Calculator

[App page](https://appshunter.io/ios/app/atom-calculator/id1457529377)

**Features:** macOS Compatibility

**In-app purchases:** none


### AmiiBot

[App page](https://appshunter.io/ios/app/amiibot/id1514835611)

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.

**Highlights:** Amiibo Management, Amiibo Duplication, iCloud Sync, Dark Mode, NFC Scanning

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 User-friendly interface and easy setup
- 🚀 Fast amiibo writing process
- 📚 Comprehensive amiibo library with good organization
- 💰 Affordable one-time purchase ($4)
- 🎨 Clean, polished UI with nice animations

**What reviewers complain about**

- ❌ Outdated amiibo library - missing recent releases
- 🐛 Inconsistent NFC writing failures
- 📱 Limited device compatibility (requires newer iPhones with NFC)
- 🆘 Poor developer support and communication
- 🔗 Broken support page links

**Reported bugs**

- 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

**Requested features**

- 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


## Frequently asked questions

### Is Atom Calculator free?

Atom Calculator costs $2.99, with no in-app purchases.

### Is AmiiBot free?

AmiiBot costs $2.99, with no in-app purchases.

### Do Atom Calculator or AmiiBot have ads?

Neither Atom Calculator nor AmiiBot shows ads.

### Which is updated more often, Atom Calculator or AmiiBot?

Atom Calculator ships an update every 35 months, and AmiiBot every 6 days. Most recently, Atom Calculator was updated on September 30, 2026 and AmiiBot on October 12, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*