Comparison

KeepCount vs HydroCalc

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

Head to head
About

KeepCount

This app transforms your device into a customizable tally board for tracking anything from game scores and workouts to inventory and habits. Easily add, resize, and color-code counters, with options for undo/redo and home screen widgets for quick access. An optional Pro upgrade unlocks unlimited boards and history.

Highlights
  • Customizable tally boards
  • Count up, down, or exact numbers
  • Adjustable step values
  • Undo/redo functionality
  • Home screen widgets
  • Siri and Shortcuts integration
Features
Read full description

Count what matters, one tap at a time. KeepCount turns your iPhone or iPad into a colorful board of counters for game scores, workouts, attendance, inventory, knitting rows, habits, and everyday tallies. COUNT YOUR WAY • Count up, count down, or enter an exact number. • Choose a step from 1 to 100 and a starting value for each counter. • Fix mistakes with undo and redo. MAKE IT YOURS • Add, resize, and arrange counters to fit your board. • Give each counter a label and a preset or custom color. • Keep work, home, and game night separate with three free boards. KEEP COUNTS WITHIN REACH • Add an interactive board widget to your Home Screen. Tap to count; Enter Number counters open KeepCount’s keypad. • Use Siri and Shortcuts to change, check, or reset a counter. • On iPhone Duo, use the inner or outer display. Partially folded tabletop mode puts the whole board above the fold and matching controls below; flat mode keeps the usual board. KeepCount Pro Upgrade for unlimited boards, full activity history, and an ad-free interface. Review count changes, resets, and edits; rapid taps may be grouped into one history entry. Monthly and yearly subscription options are available. Counting works offline. Your boards, counter values, and activity history are stored locally on your device. Purchases, restoring Pro, and some connected services require internet access. See our privacy policy for information about purchases, analytics, ads, and crash diagnostics. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://keepcount.app/privacy

About

HydroCalc

Features
Read full description

HydroCalc is a calculation aid for heating and HVAC technicians. Calculate flow from heat output and temperature difference alongside the existing hydraulic calculators. CIRCUIT PROJECTS Create named projects and group circuits by room, category or floor. Record heat output, temperature difference and input sources for each circuit. View total heat output and required flow together. BASELINE AND COMPARISON Capture a fixed baseline and edit later proposals independently. Review differences in totals and share a calculation worksheet with inputs, sources and comparison. German and English. Local projects and calculations work offline. Existing purchase unlocks remain available. Professional calculation aid: manufacturer data, applicable rules, system design and actual measurements take precedence. Check results against the real installation. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ COMMISSIONING VISITS Record measured flow for each circuit and compare it with the design targets frozen when the visit is saved. An adjustable project tolerance makes deviations clear. Earlier visits remain unchanged after later design edits. Calculated targets and measured values stay separate.

Screenshots

KeepCount4 screens

Verdict

The call

The clearest difference is update cadence: KeepCount at every 10 days against HydroCalc's every 5 weeks. 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. KeepCount sells 2 in-app purchases, starting at $1.99 per month and HydroCalc sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

KeepCount ships an update every 10 days, HydroCalc every 5 weeks. The most recent releases landed on November 9, 2026 and November 6, 2026 respectively.

Scorecard1 real difference · 8 level
KeepCount versus HydroCalc: the parameters behind the verdict, then further details
ParameterKeepCountHydroCalc
PriceFreeFree
Rating5.0 (3 ratings) — better—
Number of ratings3 — better—
Update frequencyEvery 10 days — betterEvery 5 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.217.0 — better
Further details — not scored
Size20 MB2 MB
Age rating4+4+
Developer1881 Digital, LLCPiotr Kaminski

In-app purchases

2 purchases

KeepCount

Subscriptions2
  • KeepCount Pro Monthly$1.991 Month
  • KeepCount Pro Annual$19.991 Year
1 purchases

HydroCalc

One-time1
  • HydroCalc Pro$3.99

Questions

Is KeepCount free?
KeepCount is free to download, with in-app purchases available.
Is HydroCalc free?
HydroCalc is free to download, with in-app purchases available.
Do KeepCount or HydroCalc have ads?
Neither KeepCount nor HydroCalc shows ads.
Which is updated more often, KeepCount or HydroCalc?
KeepCount ships an update every 10 days, and HydroCalc every 5 weeks. Most recently, KeepCount was updated on November 9, 2026 and HydroCalc on November 6, 2026.

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