Comparison

Fisherman's Watch vs Calcohol

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

Head to head
About

Fisherman's Watch

Predicts fishing success based on weather, sun, and moon cycles. It uses mathematical models for over 300 fish species to suggest optimal fishing times. Users can customize which factors influence the forecast.

Highlights
  • Fishing success prediction
  • Weather, sun, and moon influence
  • Mathematical models for 300+ fish species
  • Optimal fishing time suggestions
  • Customizable forecast factors
  • Regional fish packages
Features
Read full description

Fisherman Watch presents by "Fish Planet" give an accurate prediction of success on fishing and addressed to all fishermen and amateurs, and anglers sportsmen. The program displays the influence of weather and movements of the sun and moon on the result of fishing on selected species of fish and allows you to choose the best hours for fishing. Based on the collection of mathematical models of the behavior of fish MathFish5.1(TM). The forecast is based on more than 300 species. Built forecast catch smallmouth bass, pike, perch, bream, carp, crucian carp and other fish species. Application via the Internet receives weather at the point of location of the mobile phone. It records the values of atmospheric pressure, temperature, humidity, wind, clouds and the dynamics of all these parameters. After that, to this point information is calculated sunrise, sunset and the culminations of the sun and moon, high tide and low tide - if the point is located in the coastal zone. Then, in accordance with these seasonal-diurnal model of the behavior of fish MathFish5.1(TM) - is detecting the influence of all these parameters for each of fish. It is important that for the different species of fish these effects are also accounted differently. For each fish You want to catch, have the best time, this time is determined by the mathematical model accurately defined biologists parameters. Similarly, the influence of the tide on coastal fishing fish species, which is not affected, in contrast to the height of the moon above the horizon, on catching fish in inland waters. The user can choose what factors he considered when forecasting.With the help of the switches that are on the screen, you can disable the influence of the Sun, moon, tides, weather and even the daily behaviors of the selected fish species. In this case, will stay only the data of seasonal behavior of fish for those coordinates where is the phone. Itself the seasonal model, depends on the coordinates of the fisher. To better reflect the influence of climate on the World map is built the model of climatic zones taking into account details of the relief and global currents. For for more convenient display you can select the desired fish species. In the application settings the fishs are distributed across the families. In the basic free version of the app included 3 fish. Regional packages are separately available for download: North America - 76 species; Europe and Asia - 151 species; Marine fish - 322 species.

About

Calcohol

This app provides a comprehensive suite of tools for liquor makers, offering calculations for dilution, contraction, mixing, heating, boiling, and distillation. It also includes a notebook for recipes and iCloud sync, with support for various measurement systems.

Highlights
  • Alcohol strength calculations (dilution, contraction)
  • Mixture calculations by volume and mass
  • Heating and temperature management tools
  • Boiling point and distillation calculations
  • Mash and spirit making calculators
  • Notebook with iCloud sync
Features
Read full description

Here is a functions list: • Notebook - save notes, recipes and so on with iCloud sync (for iOS 13 and later) • Dilution – calculating require water volume, to decrease alcohol strength to desired • Contraction – calculating require volume of higher ABV solution, to increase available alcohol strength to desired • Mixing Alcohol by Volume – calculating mixture of two alcohol solutions by given their volume • Mixing Alcohol by Mass – calculating mixture of two alcohol solutions by given their weight • Weight to Volume - calculate volume of liquid by its weight • Gravity Change – calculating alcohol per volume, based on gravity change in SG, Plato and Brix • Water Temperature Mix – calculating overall temperature after mixing two solutions • Chilling Water – calculating volume of cold water, to chill hot one • Electric Heating Power – calculating required electrical current, voltage and % of max heater power, to get desired power from particular electric heater • Heating Time – calculating heating time by given liquid volume • Heating Power - heating source power calculation, which is applied to increase liquid temperature • Boiling – calculating boiling point by given pressure. With iPhone 6 and later version (except SE), atmospheric pressure can be read from build-in barometer • Hydrometer Reading Correction – correction reading hydrometer value depending on temperature • Mash Maker – calculate mash parameters, such as water, yeast requirements, alcohol amount prediction. All calculation based on specified ingredients list, its amount and desired total volume of mash • Strike Water – calculate required temperature for strike water, to get target mash temperature • Spirit Maker – this feature will help you to mix strong alcohol, water and sugar, to make liquor with specific proportion of that ingredients • Distillation Cut – calculate each fraction volume • Drip Speed – calculate time to collect specific volume • Theoretical Plates – calculate plates equivalent of your column extender Can be configured to calculate volumes in metric, UK or US imperial systems

Screenshots

Fisherman's Watch4 screens
Calcohol4 screens

Verdict

The call

The clearest difference is review sentiment: Calcohol at 63% against Fisherman's Watch's 14%. Calcohol also leads on rating (4.7 vs 2.5) and ads (none vs shown). On price, in-app purchases, monetization model 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. Fisherman's Watch sells 4 one-off in-app purchases and Calcohol sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Calcohol holds the better App Store score, 4.7 against 2.5. That said, the two scores are not equally well evidenced: Calcohol has 204 ratings behind it against 16, so its average is the more settled of the two. Written reviews point the same way: 14% of Fisherman's Watch's written reviews are positive against 63% of Calcohol's.

UpkeepUpdate frequency

Fisherman's Watch ships an update every 38 months, Calcohol every 2 months. The most recent releases landed on October 17, 2026 and October 29, 2026 respectively.

Scorecard5 real differences · 5 level
Fisherman's Watch versus Calcohol: the parameters behind the verdict, then further details
ParameterFisherman's WatchCalcohol
PriceFreeFree
Rating2.5 (16 ratings)4.7 (204 ratings) — better
Positive reviews13.9% of reviews62.5% of reviews — better
Number of ratings16204 — better
Update frequencyEvery 38 monthsEvery 2 months — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size75 MB20 MB
Age rating4+17+
DeveloperWeb and PrintDenis Orlov

Customer experience

Fisherman's Watch

All ratings16 ratings
Positive37.5%
Neutral0.0%
Negative62.5%
Written reviews36 reviews
Positive13.9%
Neutral0.0%
Negative86.1%

Calcohol

All ratings190 ratings
Positive92.1%
Neutral4.2%
Negative3.7%
Written reviews64 reviews
Positive62.5%
Neutral9.4%
Negative28.1%

In-app purchases

4 purchases

Fisherman's Watch

One-time4
  • Fishes of Europe and Asia$1.99
  • Fishes of North America$1.99
  • Fishes of the seas and oceans$1.99
Show 1 more
  • All-in-one$4.99
1 purchases

Calcohol

One-time1
  • Full Version$0.99

Questions

Is Fisherman's Watch free?
Fisherman's Watch is free to download, with in-app purchases available.
Is Calcohol free?
Calcohol is free to download, with in-app purchases available.
Which has better reviews, Fisherman's Watch or Calcohol?
Calcohol is rated higher. Fisherman's Watch averages 2.5 out of 5 from 16 ratings, while Calcohol averages 4.7 from 204 ratings.
Do Fisherman's Watch or Calcohol have ads?
Fisherman's Watch shows ads; Calcohol does not.
Which is updated more often, Fisherman's Watch or Calcohol?
Fisherman's Watch ships an update every 38 months, and Calcohol every 2 months. Most recently, Fisherman's Watch was updated on October 17, 2026 and Calcohol on October 29, 2026.

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