Comparison

U vs TDMS

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

Head to head
About

U

Streamline your workflow by directly inputting measurements from calipers and micrometers. This application simplifies data collection for process control, making it easier to manage your measurements.

Highlights
  • Direct caliper data input
  • Direct micrometer data input
  • Process control functionality
  • Easy data collection
Features
Read full description

Easy process control by directly taking in caliper and micrometer data.

About

TDMS

Features
Read full description

■Manage measurement data using standard to determine pass/fail The measured torque and angle values are judged based on the upper and lower limits registered for each potion, and saved with adding date, time and pass/fail judgment result. ■Work information can be registered on the app or by imported in bulk with the master file. Work information such as standard values and number of spindle be easily registered on the app. Batch registration is also possible by creating and importing a master file in Excel or CSV format. ■For detecting abnormalities in early stage, automatically processed statistical data from the measured results. To detect abnormalities early stage, "N", "X-bar", "σ", "cp" and "cpk" are automatically calculated from the measurement data. ■Outputs saved measurement data and statistical data as a file The data can review in the app and also output it as an Excel or CSV file. ■Compatible with many Tohnichi Digital products It can easily establish data management system by connecting with Tohnichi product. ■Sends the portion information to be measured to the torque wrench. The registered portion information will be sent to Tohnichi digital products, it allows to perform your operation while switching the standard values according to each portion.

Screenshots

U1 screens
TDMS4 screens

Verdict

The call

The clearest difference is update cadence: U at every 11 months against TDMS's every 26 months. U also leads on iOS requirement (11.0 vs 15.0). On price, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

U ships an update every 11 months, TDMS every 26 months. The most recent releases landed on September 29, 2026 and October 1, 2026 respectively.

Scorecard2 real differences · 8 level
U versus TDMS: the parameters behind the verdict, then further details
ParameterUTDMS
PriceFreeFree
Rating3.0 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 11 months — betterEvery 26 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.0
Further details — not scored
Size13 MB4 MB
Age rating4+4+
DeveloperMITUTOYO CORPORATIONTOHNICHI MFG.CO., LTD.

In-app purchases

None

U

No in-app purchases

None

TDMS

No in-app purchases

Questions

Is U free?
U is free to download, with no in-app purchases.
Is TDMS free?
TDMS is free to download, with no in-app purchases.
Do U or TDMS have ads?
Neither U nor TDMS shows ads.
Which is updated more often, U or TDMS?
U ships an update every 11 months, and TDMS every 26 months. Most recently, U was updated on September 29, 2026 and TDMS on October 1, 2026.

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