Comparison

Conversion Calculator vs TFPilot

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

Head to head
About

Conversion Calculator

This utility app offers a comprehensive unit conversion tool for various needs, including cooking, travel, and work. It supports over 120 units across 15 categories, with metric and imperial options. The app works offline and allows for customization of displayed decimals and category order.

Highlights
  • 15 categories and 120+ units
  • Metric and imperial conversions
  • Cooking, weight, length, temperature, and more
  • Offline functionality
  • Customizable decimal display
  • Apple Watch app
Features
Read full description

Convert cooking measurements, kg to lbs, feet to meters, Celsius to Fahrenheit and psi to bar in a tap. Conversion Calculator is a fast, clean unit converter for the kitchen, travel, the gym, school and work. COOKING & KITCHEN • Cups, tablespoons, teaspoons, fluid ounces, pints, quarts and gallons • US and imperial (UK) cups, pints and gallons kept separate, so recipes come out right • Grams, ounces and pounds for baking WEIGHT & BODY • kg to lbs, stones, ounces, grams and milligrams LENGTH, AREA & LAND • Feet, inches, meters, cm, miles, km, yards and nautical miles • Square feet, square meters, acres and hectares TEMPERATURE, SPEED & MORE • Celsius, Fahrenheit and Kelvin • km/h, mph, knots and m/s • Energy: calories, kcal, joules and kWh • Data: bytes, KB, MB, GB and TB • Time: seconds to hours PRESSURE, FUEL, POWER & MORE • Pressure: psi, bar, kPa, atm, mmHg and inHg • Fuel economy: mpg (US and UK), L/100 km and km/L • Power: horsepower (hp), kW and watts • Torque: N·m, lbf·ft and kgf·m • Force: newtons, lbf and kgf • Angle: degrees, radians and gradians MADE FOR EVERYDAY USE • 15 categories and 120+ units, metric and imperial • Swap units in one tap and copy the result • Reorder categories so the ones you use are on top, or hide the rest with Pro • Choose how many decimals to show • Apple Watch app for conversions on your wrist • Works offline Converting is free. Pro is an optional one-time purchase.

About

TFPilot

Features
Read full description

TFPilot Override Alerter - How It Works Overview The TFPilot Override Alerter is a pilot pay calculator built around a collective bargaining agreement. It tracks trip pairings, monitors duty periods in real time, and calculates every override payment earned or about to be earned. The app is fully offline and uses paste-based input. Trips persist across launches via UserDefaults with JSON encoding. The app watches four moments: pre-duty, on-duty, post-release, and between trips. A guidance banner adapts to each stage; milestone popups fire once at report, once at release, and once the next morning if actuals were not logged. Data Model FlightLeg - Flight number, origin, destination, scheduled/actual OUT/OFF/ON/IN, base TFP (1.0), flags: deadhead, ETOPS, SAQ, non-domestic, SSS. DutyPeriod - Report/release times, legs array, holiday and GDO flags, pay multiple. Computes effective release as actual last block-in plus 15 min. Pairing - Pairing ID, duty periods, domicile days, optional OriginalSnapshot for LCO diffs. Paste Input - Three Auto-Detected Formats New Trip / Reassignment - MM/DD/YYYY FLT# ORIG HHMM DEST HHMM [TZ] with optional RPT/REL lines. Timezones: EDT/EST, CDT/CST, MDT/MST, PDT/PST. Final Schedule / Actuals Import - Same format; if legs match an existing pairing, times import as actual OUT/IN. Daily Report - FLT number ORIG/DEST OUT HHMM OFF HHMM ON HHMM IN HHMM. IN earlier than OUT auto-handled as midnight crossing. Override Calculator - All Parameters Base rigs DHR - ceil(dutyHours) x 0.74 TFP DPM - flat 5.0 TFP floor per DP ADG - 6.5 x max(domicileDays, dutyPeriods) THR - ceil(awayHours / 3.0) x 1.0 TFP Base daily - max(flownTFP, DHR, DPM) x payMultiple Pairing pay - max(sumDailies, ADG, THR); overrides stack on top Overflies overflyMinutes x 0.02 TFP when actual block is greater than scheduled Duty-period overrides LDO - plus 1.00 TFP when duty is greater than 12.0 hrs GTO - (maxGapMin - 150) x 0.01 when longest single-station ground is greater than 150 min LRO - plus 1.00 TFP when last leg blocks in more than 120 min past reference arrival Night - sumNightLegCredits x 0.03 for legs touching 0100-0500 domicile local Holiday - plus 6.50 TFP for duty in 0300-0259 holiday window GDO - plus 6.50 TFP for any duty on a Golden Day Off Per-leg premiums ETOPS - credits x 0.05 SAQ - credits x 0.05 Non-Dom - credits x 0.03 (no stacking with ETOPS/SAQ) SSS - credits x 0.50 LCO - Four tiers vs. OriginalSnapshot 100% if first DP and scheduled dep earlier than original 100% if mid-DP and actual block-in more than 180 min past original last-leg 100% if final DP or turn and block-in later than original last-leg 50% standard tier for any other unscheduled leg Live Proximity Alerts (30-sec refresh) Window: 2 hr before report to 6 hr after release. Severity: info/warning/triggered. LDO - warn at 30 min out; trigger at 12.0 hrs GTO - warn at 30 min from 150-min threshold; trigger when crossed LRO - warn at 30 min from 120-min late threshold; trigger when crossed FAR 117 block advisory - info between 8.50 and 9.00 block hrs Post-release - echoes earned overrides into banner Guidance Banner and Milestone Popups Banner updates every 30 sec: no-trip, before-report, on-duty/unflown, on-duty/complete, post-release/no-actuals, post-release/actuals, outside-window. Popups fire once per pairing/DP (keyed in UserDefaults): Report time (within 15 min after), Release time (within 15 min after), Morning-after (10-24 hr post-release if no actuals). Manual Leg Controls Tap OUT at push, IN at block-in. Tap again to clear. Long-press for manual HHMM entry in domicile local time. Merging Logic matchesExistingExactly - flight plus origin and date signature set applyAsActuals - overlays dep/arr onto unset actuals; never clobbers manual entries applyReassignment - replaces structure, preserves original snapshot, re-overlays prior actuals applyDailyReport - stamps OUT/OFF/ON/IN by flight number, handles midnight crossings

Screenshots

Conversion Calculator4 screens
TFPilot4 screens

Verdict

The call

The clearest difference is in-app purchases: TFPilot at none against Conversion Calculator's 1. TFPilot also leads on iOS requirement (14.0 vs 17.0). On price, ads 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. Conversion Calculator sells 1 one-off in-app purchase. TFPilot asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Conversion Calculator versus TFPilot: the parameters behind the verdict, then further details
ParameterConversion CalculatorTFPilot
PriceFreeFree
Rating4.8 (165 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings165 — better—
Update frequencyEvery 5 weeks—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS17.014.0 — better
Further details — not scored
Size10 MB17 MB
Age rating4+4+
DeveloperCollins CheruiyotAircraft Apps LLC

In-app purchases

1 purchases

Conversion Calculator

One-time1
  • Unlimited access forever$8.99
None

TFPilot

No in-app purchases

Questions

Is Conversion Calculator free?
Conversion Calculator is free to download, with in-app purchases available.
Is TFPilot free?
TFPilot is free to download, with no in-app purchases.
Do Conversion Calculator or TFPilot have ads?
Neither Conversion Calculator nor TFPilot shows ads.

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