Comparison

Inch Millimeter Converter vs TrollDepth

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

Head to head
About

Inch Millimeter Converter

Easily convert measurements between millimeters and inches. Supports decimal, fractional, and mixed inch inputs. Results are displayed instantly and can be copied.

Highlights
  • Millimeter to inch conversion
  • Inch to millimeter conversion
  • Decimal and fractional input
  • Instant conversion results
  • Copy results to clipboard
  • Woodworking specific utility
Features
Read full description

Converting between millimeters and inches in decimal or fractional format. This tool is specially useful for Woodworking. The input length can be decimal millimeters like 41.275, decimal inches like 1.625" or fractional inches like 1" 5/8. The result shows the millimeters length and the inches in decimal format and fractional format. The converter works instantly as the input changing, and the result can be copied to clipboard. Currently, the precision of the number is 0.001. Please let me know (support@inchmillimeter.com) if you need other precision.

About

TrollDepth

Features
Read full description

TrollDepth helps anglers estimate where their lure is running so they can spend less time guessing and more time fishing. Set up your trolling rig with the details that matter: leader distance, setback after weight, weight size, trolling speed, line type, line test, lure style, attractor, and target depth. TrollDepth calculates an estimated lure depth, gives a practical depth range, and tells you how much line to bring in or let out to get closer to your target. Built for salmon, trout, kokanee, walleye, and other trolling anglers, TrollDepth supports common trolling setups including snap weights, inline weights, keel weights, dodgers, flashers, inline trolls, cut plugs, lead core, sinking fly line, and more. Features: - Estimate trolling depth from your current rig - See a practical depth range, not just one perfect number - Set a target depth and get line adjustment guidance - Compare weights, speeds, line types, lures, and attractors - Use calibration to tune estimates from real sonar or field observations - Learn what each input means with built-in help - Save time when dialing in new water, new gear, or changing conditions TrollDepth is designed as a fishing aid, not a guarantee. Current, lure action, turns, line angle, rod position, knots, and real-world gear variation can all affect actual running depth. Use it as a practical starting point, then fine tune with your own sonar, strikes, and local conditions. Whether you are trolling reservoirs, lakes, bays, or big water, TrollDepth gives you a cleaner way to understand your spread and get your lure closer to the fish. We always improve based on your real feedback. A Tool For Anglers Designed By An Angler.

Screenshots

Inch Millimeter Converter3 screens
TrollDepth4 screens

Verdict

The call

The clearest difference is update cadence: TrollDepth at every 3 weeks against Inch Millimeter Converter's every 14 months. Inch Millimeter Converter's advantage is price ($0.99 vs $4.99) and iOS requirement (13.0 vs 16.0). On 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

Inch Millimeter Converter costs $0.99 and TrollDepth $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Inch Millimeter Converter ships an update every 14 months, TrollDepth every 3 weeks. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 7 level
Inch Millimeter Converter versus TrollDepth: the parameters behind the verdict, then further details
ParameterInch Millimeter ConverterTrollDepth
Price$0.99 — better$4.99
Rating5.0 (2 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 14 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better16.0
Further details — not scored
Size5 MB5 MB
Age rating4+4+
DeveloperComet Network TechnologyMatthew Frost

In-app purchases

None

Inch Millimeter Converter

No in-app purchases

None

TrollDepth

No in-app purchases

Questions

Is Inch Millimeter Converter free?
Inch Millimeter Converter costs $0.99, with no in-app purchases.
Is TrollDepth free?
TrollDepth costs $4.99, with no in-app purchases.
Do Inch Millimeter Converter or TrollDepth have ads?
Neither Inch Millimeter Converter nor TrollDepth shows ads.
Which is updated more often, Inch Millimeter Converter or TrollDepth?
Inch Millimeter Converter ships an update every 14 months, and TrollDepth every 3 weeks. Most recently, Inch Millimeter Converter was updated on November 6, 2026 and TrollDepth on November 5, 2026.

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