Comparison

Clampmitter vs Whenr Whenr

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

Head to head
About

Clampmitter

Features
Read full description

The CLAMPMITTER™ is a unique tool for inductive coupling. This self-contained inductive transmitter increases productivity, promotes safety and simplifies locates by condensing the transmitter and inductive coupler into one cordless package. Whether climbing down a manhole or accessing a utility box, the Clampmitter is an easy alternative to suiting up with a full transmitter and wired coupler.

About

Whenr Whenr

This app simplifies complex time calculations, helping you easily determine time differences, future times, and duration sums. It offers an intuitive interface and convenient options to copy, set reminders, or share results.

Highlights
  • Calculate time differences
  • Determine future times
  • Sum time durations
  • Copy results to clipboard
  • Create reminders from results
  • Share time calculations
Features
Read full description

Doing math with dates and times is hard. Whenr Whenr makes it easy, with a simple calculator-style interface for dates, times, durations, and unit conversions. There are no awkward forms, no modes to switch between, and no workflows to learn. Just type in your values, select the function you want to apply, and get your answer. With Whenr Whenr you can: - Answer time questions quick and easy. For example, calculate “how long is it from now until 7:42?” or “what time will it be in 4 hours and 47 minutes?”? - Count days between dates, add weeks to a date, or work across months without manually counting. - Make schedules easier to reason about. Figure out equal turns, manipulate durations, split time fairly, and keep plans running smoothly. - Make weird durations readable. Convert amounts like 400 hours into weeks, 5,000 minutes into days, or 10,000 seconds into hours, so you can actually think about them. And it does all this in a familiar calculator-style interface - not a maze of tabs and dropdowns. There's no mode switching, no confusing forms, and no translating your question into an app's weird logic. You just enter dates and times using the keypad and get the right answer fast.

Screenshots

Clampmitter1 screens
Whenr Whenr4 screens

Verdict

The call

The clearest difference is update cadence: Whenr Whenr at every 22 months against Clampmitter's every 69 months. Clampmitter's advantage is iOS requirement (12.0 vs 16.1). 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

Clampmitter ships an update every 69 months, Whenr Whenr every 22 months. The most recent releases landed on September 29, 2026 and October 2, 2026 respectively.

Scorecard2 real differences · 8 level
Clampmitter versus Whenr Whenr: the parameters behind the verdict, then further details
ParameterClampmitterWhenr Whenr
PriceFreeFree
Rating—5.0 (4 ratings) — better
Positive reviews—66.7% of reviews
Number of ratings—4 — better
Update frequencyEvery 69 monthsEvery 22 months — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPodiPhone, iPad, Mac — better
Requires iOS12.0 — better16.1
Further details — not scored
Size8 MB4 MB
Age rating4+4+
DeveloperRycomDarin Kelkhoff

In-app purchases

None

Clampmitter

No in-app purchases

None

Whenr Whenr

No in-app purchases

Questions

Is Clampmitter free?
Clampmitter is free to download, with no in-app purchases.
Is Whenr Whenr free?
Whenr Whenr is free to download, with no in-app purchases.
Do Clampmitter or Whenr Whenr have ads?
Neither Clampmitter nor Whenr Whenr shows ads.
Which is updated more often, Clampmitter or Whenr Whenr?
Clampmitter ships an update every 69 months, and Whenr Whenr every 22 months. Most recently, Clampmitter was updated on September 29, 2026 and Whenr Whenr on October 2, 2026.

Other comparisons