Comparison

K.O. Sudoku vs Randomtime

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

K.O. Sudoku

This app offers a vast collection of Sudoku puzzles with various grid sizes and unique rule sets. It provides both direct solutions and step-by-step explanations to help users improve their skills. Users can even input puzzles by taking a photo.

Highlights
  • Vast Sudoku puzzle variety
  • Photo input for puzzles
  • Step-by-step explanations
  • Direct solution mode
  • Technique tutorials
  • Online Sudoku store
Features
Read full description

Various types sudoku puzzles, answers, step-by-step explanations, allow take photo to input. It supports 3/4/5/6/7/8/9/10/12/15/16 grid sudoku, irregular sudoku, killer sudoku, kendoku, skyscrapers sudoku, thermo sudoku, arrow sudoku, clone sudoku, odd/even sudoku, palindrome sudoku, sandwich sudoku, little killer sudoku, inequality sudoku, fortress sudoku, v-shaped sudoku, tripod sudoku, between sudoku, German whispers sudoku, slanted-lines sudoku, odd-even capsules sudoku, kropki sudoku, outside sudoku, battenburg sudoku, consecutive sudoku, quad max sudoku, clock face sudoku, clock sudoku, quadruple sudoku, exclusion sudoku, star product sudoku, next to 9 sudoku, Rossini sudoku, x-sums sudoku, search 6 sudoku, search 9 sudoku, odd-even minesweeper sudoku, wheels sudoku, rhombus sudoku, odd-even lines sudoku, anti-diagonal sudoku, triangle sums sudoku, slanted # sudoku, eliminate sudoku, slow thermo sudoku, renban sudoku, diagonal inequality sudoku, parity lines sudoku, point to next sudoku, odd path sudoku, up/down lines sudoku, conveyor belt sudoku, region sum lines sudoku, trench sudoku, diagonal consecutive sudoku, OEBS sudoku, descriptive pairs sudoku, numbered rooms sudoku, first odd/even sudoku, rougamo sudoku, sum max min sudoku, distance sudoku, even sandwich sudoku, next to 6 sudoku, bouncing x-sums sudoku, x-th sum sudoku, consecutive count sudoku, max-position sudoku, full-rank sudoku, lesser-greater neighbors sudoku, pointing evens sudoku, diagonal outside sudoku, big-small sudoku, VX sudoku, 56 sudoku, irregular dots sudoku, consecutive pairs sudoku, add/sub sudoku, self joint sudoku, necklace sudoku, blackout sudoku, one more num sudoku, snow sudoku, hexagonal sudoku, curve sudoku, tridoku, hoshi sudoku, 4x4 ring sudoku, half sudoku, honeycomb sudoku, 3D sudoku, cube sudoku, pentagram sudoku, penrose triangle sudoku, 3D windmill sudoku, overlapping sudoku, samurai sudoku, twodoku, triple doku, flower sudoku, windmill sudoku, gattai-3 sudoku, butterfly sudoku, cross sudoku, sohei sudoku, W sudoku, gattai-5 sudoku, gattai-13 sudoku, star sudoku, extra regions sudoku, diagonal sudoku, windoku, offset sudoku, percent sudoku, asterisk sudoku, girandola sudoku, center dot sudoku, pyramid sudoku, product sudoku, ratio sudoku, addition sudoku, subtract sudoku, round off sudoku, sum or difference sudoku, mathdoku, zero sudoku, prime sudoku, sum dot sudoku, inclusion sudoku, diagonal XV pairs sudoku, sum-product VX sudoku, greater sudoku, quad-exist sudoku, consec-ineq sudoku, BMS sudoku, sum frame sudoku, big-small sudoku, odd sudoku, even sudoku, multiples sudoku, balanced sudoku, non-consecutive sudoku, no touch sudoku, anti-knight sudoku, anti-bishop sudoku, no-four sudoku, connected irregular sudoku, scattered sudoku, shape sudoku, letter-map sudoku, etc. There are also technique tutorials and a rich online sudoku store. --------------- K.O. mode: Provide the solution directly. Help mode: Provide step-by-step explanations. --------------- Sudoku Rules: Fill in the 9x9 grid with numbers 1~9 such that each row, column, and 3x3 box contains each number exactly once. Irregular Sudoku: Each row, column, and irregularly shaped box contains no repeating digits. Killer Sudoku: Combines classic Sudoku rules with "killer cages" (dashed-line groups). Each cage shows a sum for its digits, which must also be unique within the cage. Kendoku: Fill an n x n grid with digits 1-n (no repeats per row/column). Groups marked by thick lines show a target number and operation (+, -, ×, ÷) that their digits must satisfy. If no operator is given, any operation applies. Skyscraper Sudoku: Perimeter clues showing visible building counts (taller numbers block smaller ones), while unmarked sides remain unrestricted. --------------- Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.yl-soft.cn/sudoku/privacy_policy_en.html

About

Randomtime

Features
Read full description

This app is for couples who are looking for an exciting way to add a dash of spontaneity to their routine. It generates random dates and times for unique experiences, turning ordinary days into extraordinary memories. Here's the problem it solves: over time, dating can become predictable and lose the thrill it once had. We're here to rekindle that thrill, making every day a potential surprise date with your significant other

Screenshots

K.O. Sudoku4 screens
Randomtime4 screens

Verdict

The call

The clearest difference is in-app purchases: Randomtime at none against K.O. Sudoku's 5. Randomtime also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). On price and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. K.O. Sudoku sells 5 in-app purchases, starting at $0.99 per month. Randomtime asks for nothing beyond the download.

Scorecard3 real differences · 7 level
K.O. Sudoku versus Randomtime: the parameters behind the verdict, then further details
ParameterK.O. SudokuRandomtime
PriceFreeFree
Rating4.4 (8 ratings) — better—
Positive reviews84.6% of reviews—
Number of ratings8 — better—
Update frequencyEvery 5 days—
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size78 MB54 MB
Age rating4+17+
Developer又瑞 韦NextApps sp. z o.o.

In-app purchases

5 purchases

K.O. Sudoku

Subscriptions2
  • Vip Monthly$0.991 Month
  • Vip Yearly$9.991 Year
One-time3
  • Vip 30 days$0.99
  • Quiz Pass (30 days)$1.99
  • Quiz Pass 365 days$19.99
None

Randomtime

No in-app purchases

Questions

Is K.O. Sudoku free?
K.O. Sudoku is free to download, with in-app purchases available.
Is Randomtime free?
Randomtime is free to download, with no in-app purchases.
Do K.O. Sudoku or Randomtime have ads?
K.O. Sudoku shows ads; Randomtime does not.

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