# Sum Loop vs PanelShiritori

The clearest difference is in-app purchases: PanelShiritori at none against Sum Loop's 1. PanelShiritori also leads on update cadence (every 6 days vs every 4 months). Sum Loop's advantage is device support (3 vs 1) and iOS requirement (14.0 vs 16.6). On price and ads there is nothing between them.

Both are free to download. Sum Loop sells 1 one-off in-app purchase. PanelShiritori asks for nothing beyond the download.

Sum Loop ships an update every 4 months, PanelShiritori every 6 days. The most recent releases landed on June 1, 2026 and June 24, 2026 respectively.

## The numbers

| Metric | Sum Loop | PanelShiritori |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sum-loop/id6447087917/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 70.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Every 6 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 9 MB | 15 MB |
| Requires iOS | **14.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Goro Sato](https://appshunter.io/developer/412448991) | [daisuke uehara](https://appshunter.io/developer/547766102) |

## What reviewers say

### Sum Loop

[App page](https://appshunter.io/ios/app/sum-loop/id6447087917)

A challenging puzzle game where players place blocks into overlapping loops to match displayed sums. Offers multiple solutions for each puzzle, providing replayability. Designed for quick, engaging gameplay.

**Highlights:** Match sums in overlapping loops, Place blocks to solve puzzles, Multiple solutions per puzzle, Challenging gameplay, Intuitive block placement

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### PanelShiritori

[App page](https://appshunter.io/ios/app/panelshiritori/id6747059495)

This puzzle game challenges players to identify various readings for the same image, expanding a dictionary of Japanese words. Players then use collected readings in a timed challenge to select associated images.

**Highlights:** Picture Shiritori puzzle gameplay, Discover multiple readings for images, Build a yomikata dictionary, Quick-push panel time attack, Collect and use word readings

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sum Loop free?

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

### Is PanelShiritori free?

PanelShiritori is free to download, with no in-app purchases.

### Do Sum Loop or PanelShiritori have ads?

Both Sum Loop and PanelShiritori show ads.

### Which is updated more often, Sum Loop or PanelShiritori?

Sum Loop ships an update every 4 months, and PanelShiritori every 6 days. Most recently, Sum Loop was updated on June 1, 2026 and PanelShiritori on June 24, 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.*