Comparison

FeasyBlue vs Monochron

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

Head to head
About

FeasyBlue

Features
Read full description

Function: The app used for Bluetooth Low Energy communication and modify Feasycom‘s bluetooth module information. Feature: 1.Bluetooth RSSI display. 2.Friendly UI. 3.Configurable UUID. 4.Easier Bluetooth communication. 5.Support OTA hardware firmware.

About

Monochron

Read full description

Monochron is a clock made from three-dimensional puzzles, whose colors have been reduced to black and white. It is a journey into the exploration of the expressive possibilities of the structural grids of these puzzles, where each digit is the best version of itself, achieved with the minimal means of the puzzle tiles and their transformations. As a result, the digits take on peculiar and eccentric shapes while remaining legible. The cubes have three black and three white sides. Every transition is executed with integrity and can be physically replicated on a real cube, adding to the uniqueness of both the concept and its execution. Idea and design — Max Shtok Algorithms and development — Basil Kotov Features: • Black-on-white and white-on-black cube modes • Light or dark background options • Vertical or horizontal orientation with clever transitions • Always fullscreen — the screen remains unlocked, and all system elements are hidden while the app is open • More puzzle shapes coming soon, including Pyraminx and Octahedron

Screenshots

FeasyBlue4 screens
Monochron4 screens

Verdict

The call

The clearest difference is price: FeasyBlue at Free against Monochron's $4.99. FeasyBlue also leads on update cadence (every 3 months vs every 18 months) and iOS requirement (13 vs 15.6). On ads, in-app purchases 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

FeasyBlue is free to download; Monochron costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

FeasyBlue ships an update every 3 months, Monochron every 18 months. The most recent releases landed on October 7, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 3 level
FeasyBlue versus Monochron: the parameters behind the verdict, then further details
ParameterFeasyBlueMonochron
PriceFree — better$4.99
Update frequencyEvery 3 months — betterEvery 18 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13 — better15.6
Further details — not scored
Size5 MB1 MB
Age rating4+4+
DeveloperfeasycomVasilii Kotov

In-app purchases

None

FeasyBlue

No in-app purchases

None

Monochron

No in-app purchases

Questions

Is FeasyBlue free?
FeasyBlue is free to download, with no in-app purchases.
Is Monochron free?
Monochron costs $4.99, with no in-app purchases.
Do FeasyBlue or Monochron have ads?
Neither FeasyBlue nor Monochron shows ads.
Which is updated more often, FeasyBlue or Monochron?
FeasyBlue ships an update every 3 months, and Monochron every 18 months. Most recently, FeasyBlue was updated on October 7, 2026 and Monochron on October 25, 2026.

Other comparisons