# Adderpad vs Zero Sum Scorekeeper Assistant

The clearest difference is in-app purchases: Zero Sum Scorekeeper Assistant at none against Adderpad's 1. Zero Sum Scorekeeper Assistant also leads on update cadence (every 4 weeks vs every 8 months) and review sentiment (95% vs 80%). Adderpad's advantage is iOS requirement (12.4 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Adderpad sells 1 one-off in-app purchase. Zero Sum Scorekeeper Assistant asks for nothing beyond the download.

Adderpad ships an update every 8 months, Zero Sum Scorekeeper Assistant every 4 weeks. The most recent releases landed on September 30, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Adderpad | Zero Sum Scorekeeper Assistant |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (24 ratings)](https://appshunter.io/ios/app/adderpad-game-scorekeeper/id1415045161/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 80.0% of reviews | **95.2% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 4 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 15 MB | 52 MB |
| Requires iOS | **12.4** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tim Carlson](https://appshunter.io/developer/666033596) | [Duong Vu Tung](https://appshunter.io/developer/1745934639) |

## What reviewers say

### Adderpad

[App page](https://appshunter.io/ios/app/adderpad-game-scorekeeper/id1415045161)

This app provides a fast and convenient way to keep score for a wide variety of games, eliminating the need for pen and paper. It supports up to four players and offers customizable themes for an enhanced gaming experience.

**Highlights:** Fast scorekeeping, Supports up to four players, Customizable themes, Set max score to infinity, Wide game support

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Adderpad Premium | $2.99 | one-time |


### Zero Sum Scorekeeper Assistant

[App page](https://appshunter.io/ios/app/zero-sum-scorekeeper-assistant/id6502570274)

This smart scorekeeper uses zero-sum scoring theory to automatically calculate and fill in the last player's score. It offers AI-powered support for multiple Vietnamese card games, handling complex rules and scoring logic.

**Highlights:** AI-assisted scoring for Vietnamese card games, Automatic score calculation, Supports unlimited players, matches, and games, Dead-simple, distraction-free game flow, Checksum validation for accuracy, Player ranking

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

**In-app purchases:** none


## Frequently asked questions

### Is Adderpad free?

Adderpad is free to download, with in-app purchases available.

### Is Zero Sum Scorekeeper Assistant free?

Zero Sum Scorekeeper Assistant is free to download, with no in-app purchases.

### Do Adderpad or Zero Sum Scorekeeper Assistant have ads?

Neither Adderpad nor Zero Sum Scorekeeper Assistant shows ads.

### Which is updated more often, Adderpad or Zero Sum Scorekeeper Assistant?

Adderpad ships an update every 8 months, and Zero Sum Scorekeeper Assistant every 4 weeks. Most recently, Adderpad was updated on September 30, 2026 and Zero Sum Scorekeeper Assistant on October 10, 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.*