Choose 1Chess Clock when the repository-backed offline, no-account setup and its portrait two-player clock fit your board. Choose Chess Clock by MansoorCM when the current Google Play listing's adjustable game time, unequal player times, editable controls, landscape layout, or dark theme are the deciding criteria. This is a feature comparison from written sources, not a claim that either app is the better choice for every player.
Quick answer: who should choose what
1Chess Clock suits a player who wants an Android phone clock that can be configured before the game, works offline, does not require an account, and includes Fischer, Bronstein, and simple delay modes in the reviewed source. Its settings also cover equal or unequal starting times, saved custom presets, pause, display modes, themes, sound, and haptic preferences. MansoorCM's current listing describes custom controls, Fischer, Bronstein, and delay modes, in-game time adjustment, unequal player times, portrait and landscape orientation, popular controls, pause and automatic pause, edit/delete controls, and a dark theme.
Start with the 1Chess Clock setup guide if you want to see the app-specific flow. The time-control guide helps separate a base countdown from increment or delay before comparing settings.
Criteria and evidence
The rows below report what the two sources document. A blank or “not stated” item is an evidence boundary, not a verdict about the underlying software.
| Criterion | 1Chess Clock repository and plan | MansoorCM Google Play listing |
|---|---|---|
| Offline and account setup | The plan states offline use and no account required. | The feature copy reviewed does not state offline use or an account requirement. |
| Time controls | Fischer, Bronstein, and simple delay are present in the reviewed source. | The listing states custom controls, Fischer, Bronstein, and delay. |
| Player times | The source supports equal or unequal starting times. | The listing states different times for both players. |
| Adjusting a running game | The reviewed source documents pause and setup controls; it does not document an in-game adjust-time control. | The listing states that clock time can be adjusted during the game. |
| Preset management | The source includes common presets and saved custom presets. | The listing states popular controls plus edit and delete for existing controls. |
| Orientation and appearance | The Android source locks the app to portrait and includes display modes and themes. | The listing states portrait and landscape orientation and dark theme support. |
| Interruption behavior | The source pauses an active game when the app becomes inactive and provides manual pause. | The listing states pause at any time and automatic pause when interrupted. |
Best for
Choose 1Chess Clock if you value the plan's offline/no-account description, a portrait layout, and a settings-first routine with saved presets. Choose MansoorCM if you specifically need the listing's unequal times, in-game time adjustment, landscape option, or edit/delete controls. If neither set of written features answers your question, the safest next step is a short agreed setup check before a casual game rather than assuming parity.
The phone chess clock guide gives a neutral hand-over routine that applies when either app is placed beside a board.
Who should not choose either from this table alone
Do not rely on this page as proof of event approval, a particular tournament time control, or current behavior outside the cited descriptions. A player who needs a physical clock, landscape orientation, a running-game adjustment, or a rule-specific multi-stage control should verify that requirement with the organiser and the current app source before starting.
Limitations
The 1Chess Clock side uses repository and plan evidence; the MansoorCM side uses its Google Play listing checked on 2026-10-03. No direct device test was performed for this comparison, so responsiveness, accessibility, sound volume, and edge cases are intentionally not scored. Feature lists can change after the check date.
Check date and next step
Both source sets were checked on 2026-10-03. For another listing-based comparison, read 1Chess Clock vs Chrono Chess. If you only need to prepare a game in 1Chess Clock, use the common time-control guide and verify the display with both players.