Best Kakuro apps for iPhone (2026)

Seven Kakuro apps for iPhone, with one strong point and one limit for each.

We make Cross Sums, one of the apps on this list. So we give facts only: rating counts from the App Store, and what each App Store page says. The list goes by the number of ratings, so Cross Sums is last.

Rating counts and update dates: the App Store lookup service (itunes.apple.com/lookup, US store), checked on October 20, 2026. In-app purchases and privacy labels: each app's App Store page, on the same day. Numbers change every day.

The short list

App	US ratings	Last update
Real Kakuro	2,627 (4.7)	Jul 2023
Kakuro: Number Crossword	1,946 (4.8)	Jul 2026
Kakuro++	641 (4.8)	Sep 2026
Kakuro Endless	449 (4.7)	May 2023
Kakuro u	301 (4.6)	Mar 2026
Kakuro - Classic	57 (4.8)	Jul 2026
Cross Sums (ours)	0	Oct 2026

All seven are free to download. The number in brackets is the average star rating.

Real Kakuro

By Luiz Deucher · 2,627 ratings, average 4.7 · last update July 3, 2023

Strong point: 3,000 puzzles, and no locked levels. Every grid fits a 10 × 10 board, so you never zoom.
Limit: No update since July 2023. It sells a "Remove Ads" purchase, so the free version has ads.

Real Kakuro on the App Store

Kakuro: Number Crossword

By Conceptis Ltd. · 1,946 ratings, average 4.8 · last update July 28, 2026

Strong point: No ads. Grids go up to 22 × 22, with Samurai Kakuro too. It can show the sum combinations and the rest of a sum for a run.
Limit: The free part is 200 sample puzzles and one bonus puzzle a week. More puzzles come in packs that you buy in the app.

Kakuro: Number Crossword on the App Store

Kakuro++ Cross Sums Puzzles

By chaviro software · 641 ratings, average 4.8 · last update September 17, 2026

Strong point: Thousands of puzzles in 15 levels. It shows the possible combinations for a clue, and removes notes that are no longer possible.
Limit: It has ads, and sells a purchase to remove them. Its App Store privacy label lists data used to track you.

Kakuro++ on the App Store

Kakuro Endless

By John Detloff · 449 ratings, average 4.7 · last update May 24, 2023

Strong point: Over 17,000 puzzles, all free, with no in-app purchases. It has a combinations cheat sheet that you can hide.
Limit: No update since May 2023.

Kakuro Endless on the App Store

Kakuro u

By Mastersoft · 301 ratings, average 4.6 · last update March 15, 2026

Strong point: Many kinds of hints, a combination calculator, and bookmarks that take you back to a known point when a guess fails.
Limit: Its Pro service is a monthly subscription. Its App Store privacy label lists data used to track you.

Kakuro u on the App Store

Kakuro - Classic

By Attribute One LLC · 57 ratings, average 4.8 · last update July 10, 2026

Strong point: Hints that point you in the right direction, and an auto-check that finds wrong entries.
Limit: Extra puzzles come in packs that you buy one by one in the app.

Kakuro - Classic on the App Store

Cross Sums (our app)

By Brightwood Labs LLC · 0 ratings · first released October 19, 2026

Strong point: Kakuro and Calcudoku in one app, with a free daily puzzle of each. Hints explain the next step. No ads and no tracking.
Limit: It is new and has no ratings yet. Medium, Hard and Expert puzzles need a one-time purchase. It needs iOS 17 or later.

Cross Sums on the App Store · More about Cross Sums

How to choose

If you want many free puzzles, look at the puzzle count and at what the free part includes.
If ads or tracking matter to you, read the privacy label on the App Store page before you download.
If you are new to Kakuro, read how to play Kakuro, and keep the combinations chart open.