Comparison

Killdoku vs Twindow

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

Head to head
About

Killdoku

Features
Read full description

Every room tells a story. Killdoku is a detective logic game where every clue matters. Place each person in the correct position, reconstruct the scene, and use pure deduction to determine who committed the murder. Investigate 480 carefully designed and validated cases across 14 distinctive dossiers. Four difficulty levels—from Easy to Extreme—let you choose between a quick deduction and a demanding 12×12 investigation. Features: - 480 cases: 120 Easy, 120 Medium, 120 Hard, and 120 Extreme - 14 distinctive detective dossiers - Progressive hints based on your current board - Theory Mode for safely testing a line of reasoning - Daily Case with a local archive - Local progress, statistics, and multiple in-progress cases - Dutch and English - High-contrast, large-text, Reduce Motion, coordinate, and high-visibility mark options - No ads, no account, and no in-app purchases Can you follow the clues, reconstruct the scene, and identify the murderer?

About

Twindow

A relaxing spot-the-difference game with no time limits or penalties for wrong taps. Enjoy beautifully crafted scenes and a new daily challenge, playable offline.

Highlights
  • No time limits
  • No penalties for wrong taps
  • Daily scenes
  • Offline play
  • Carefully designed differences
  • Colorblind friendly
Features
Read full description

Two windows onto the same warm little world. Five things are different. Twindow is a find-the-difference game built for people who want to look, not to hurry. A bakery counter at closing time. A greenhouse in soft afternoon light. A harbour street with the boats in. Two scenes, five differences, as long as you like. No clock running. There is no countdown and nothing to lose. A wrong tap only locks the pictures for a moment, so guessing never pays. Play one scene or twenty. Every difference is measured before it ships. Each difference is scored for how visible it actually is — colour distance, edge contrast, size, and how busy the surroundings are. Nothing is hidden in a single pixel, and nothing depends on telling two nearly identical colours apart. A new scene every day. Everyone gets the same Daily Scene. Keep a streak, and share your result as a small grid that gives nothing away. Works fully offline. On a plane, on the underground, in the garden. Your stars, album and streak are kept on this phone. Stuck? After a run of misses, or a quiet spell with nothing found, the strip between the two windows offers a short video: watch it and Twindow frames the area where a difference hides (or reveals one), or tap Keep looking and carry on. Other ads appear only between scenes and on the menus, never over the pictures while you play. Every scene is free. If you would rather play without banners and between-scene ads, there is an optional one-time purchase, Remove ads: tap the red "No ads" label in the corner of the Home postcard or on the top strip of a scene, or open Settings, where Restore purchases sits right below it. Hint videos stay optional either way.

Screenshots

Killdoku4 screens
Twindow4 screens

Verdict

The call

The clearest difference is in-app purchases: Killdoku at none against Twindow's 1. Killdoku also leads on ads (none vs shown) and device support (3 vs 1). Twindow's advantage is update cadence (every 5 days vs every 5 weeks). On price 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. Twindow sells 1 one-off in-app purchase. Killdoku asks for nothing beyond the download.

UpkeepUpdate frequency

Killdoku ships an update every 5 weeks, Twindow every 5 days. The most recent releases landed on October 8, 2026 and October 29, 2026 respectively.

Scorecard5 real differences · 4 level
Killdoku versus Twindow: the parameters behind the verdict, then further details
ParameterKilldokuTwindow
PriceFreeFree
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyEvery 5 weeksEvery 5 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Ad-supported
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better16.4
Further details — not scored
Size188 MB101 MB
Age rating12+4+
DeveloperTed MaertzdorfOzkan Yilmaz

In-app purchases

None

Killdoku

No in-app purchases

1 purchases

Twindow

One-time1
  • Remove Ads$2.99

Questions

Is Killdoku free?
Killdoku is free to download, with no in-app purchases.
Is Twindow free?
Twindow is free to download, with in-app purchases available.
Do Killdoku or Twindow have ads?
Twindow shows ads; Killdoku does not.
Which is updated more often, Killdoku or Twindow?
Killdoku ships an update every 5 weeks, and Twindow every 5 days. Most recently, Killdoku was updated on October 8, 2026 and Twindow on October 29, 2026.

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