Comparison

TetraClock+ vs Dos Notes

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

Head to head
About

TetraClock+

Features
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'TetraClock+' is a clock app that represents the time by stacking seven types of single-sided tetromino-shaped blocks as they fall. The differences from the free version are as follows: ・No ads ・Watch App included [How to Use] Tap the screen: Open the settings screen. Long press the screen: Stack the blocks again. [Main Features] - Switch between 12/24-hour display - Toggle seconds display ON/OFF - Monotone display - Fill in ON/OFF - Change outline color - Change transition animations - Change falling speed - Change background color [Notices] Due to the animation effect used for changing numbers, there may be a discrepancy between the displayed time and the actual time. Please do not use the displayed time as a basis for important decisions.

About

Dos Notes

Features
Read full description

DosNotes is a minimalist notes app inspired by the MS‑DOS era. No gradients, no clutter – only sharp pixels, a monochrome palette and an instant launch into writing. Capture ideas, drafts, lists and code in a focused DOS‑style editor that feels like an old terminal but works like a modern tool. Customize sounds and colors, switch between light and dark DOS themes, and enjoy keyboard‑friendly controls. DosNotes is perfect for nostalgic geeks, writers who crave focus, and anyone who wants a unique retro twist on everyday note‑taking.

Screenshots

TetraClock+3 screens
Dos Notes4 screens

Verdict

The call

The clearest difference is price: TetraClock+ at $2.99 against Dos Notes's $4.99. TetraClock+ also leads on device support (4 vs 2) and iOS requirement (14.0 vs 16.4). On update cadence, ads and in-app purchases 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

TetraClock+ costs $2.99 and Dos Notes $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on September 20, 2026 and September 8, 2026 respectively.

Scorecard3 real differences · 3 level
TetraClock+ versus Dos Notes: the parameters behind the verdict, then further details
ParameterTetraClock+Dos Notes
Price$2.99 — better$4.99
Update frequencyEvery 5 daysEvery 5 days
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS14.0 — better16.4
Further details — not scored
Size6 MB14 MB
Age rating4+4+
DeveloperLegal Prompt Inc.Denis Kashin

In-app purchases

None

TetraClock+

No in-app purchases

None

Dos Notes

No in-app purchases

Questions

Is TetraClock+ free?
TetraClock+ costs $2.99, with no in-app purchases.
Is Dos Notes free?
Dos Notes costs $4.99, with no in-app purchases.
Do TetraClock+ or Dos Notes have ads?
Neither TetraClock+ nor Dos Notes shows ads.
Which is updated more often, TetraClock+ or Dos Notes?
TetraClock+ ships an update every 5 days, and Dos Notes every 5 days. Most recently, TetraClock+ was updated on September 20, 2026 and Dos Notes on September 8, 2026.

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