Atom Calculator vs Mahjong Scorer
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.
Mahjong Scorer
This app uses AI to automatically score Mahjong hands from a photo. It allows players to track scores across multiple rounds and customize scoring rules. Designed for both casual players and enthusiasts, it removes the complexity of manual scoring.
- AI-powered photo scoring
- Automatic hand scoring
- Multi-round score tracking
- Customizable scoring rules
- Player score management
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Easily calculate Mahjong scores with just a photo! This app simplifies scoring by automatically scoring your hand using a specially trained AI model. Keep track of all players' scores across multiple rounds, and customize scoring and payment rules to match your unique Mahjong style. Perfect for casual players and enthusiasts alike, this app takes the hassle out of scoring so you can focus on the playing!
Screenshots
Verdict
The clearest difference is price: Mahjong Scorer at Free against Atom Calculator's $2.99. Mahjong Scorer also leads on update cadence (every 8 days vs every 35 months). Atom Calculator's advantage is ads (none vs shown) and device support (3 vs 1). On in-app purchases 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
Mahjong Scorer is free to download; Atom Calculator costs $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, Mahjong Scorer every 8 days. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.
| Parameter | Atom Calculator | Mahjong Scorer |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 35 months | Every 8 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | — | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 13 MB | 117 MB |
| Age rating | 4+ | 4+ |
| Developer | Gorasiya Vishal Nanjibhai | Mikael de Verdier |
In-app purchases
Atom Calculator
No in-app purchases
Mahjong Scorer
No in-app purchases
Questions
Is Atom Calculator free?
Is Mahjong Scorer free?
Do Atom Calculator or Mahjong Scorer have ads?
Which is updated more often, Atom Calculator or Mahjong Scorer?
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