Comparison

Converter vs Bandwarden

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

Head to head
About

Converter

This app offers a comprehensive unit and hardness conversion tool with an easy-to-use interface. It includes currency conversion with updated exchange rates, over 300 engineering and scientific units, and a specialized hardness converter. Additional features like timezone conversion, pace calculation, and a standard calculator enhance its utility.

Highlights
  • Currency converter with live exchange rates
  • Over 300 engineering and scientific units
  • Specialized hardness converter
  • Timezone conversion
  • Running pace calculator
  • Integrated standard calculator
  • Conversion history log
Features
Read full description

Trelleborg’s “Unit and Hardness Converter” converts a comprehensive list of units (incl. currencies) in an easy way. In addition, the app has a set of other useful features on board, like timezone conversion, percentage calculations, a running pace calculator and more What our users say: “Have been using it forever, never tried other converter as this one does the job perfectly” - Lazareth_fr “Fabulous resource, but also a functional masterpiece!” -Otto. “This is needed by all engineers. So simple and easy to use” -JLa03.   FEATURES • Easy-to-use interface • Currency converter with in-app exchange rate update functionality • Over 300 engineering and scientific conversion units in 32 categories • Hardness converter with 16 conversion tables based on ASTM E140-07 and ISO-18265 for quick conversion between different scales • Video library: features the extensive Trelleborg Sealing Solutions YouTube library • Toggle between units • Switch between dark and white theme • Conversion history log • Create favorite lists • Standard calculator integrated with unit converter DIMENSIONS • Area • Currency • Current • Data • Density • Distance • Dynamic Viscosity • Energy • Force • Frequency • Kinematic Viscosity • Moment of inertia • Power • Prefixes • Pressure • Speed • Strength • Temperature • Time • Torque • Volume • Weight • Fuel Consumption • Glucose • Vacuum • Numbers • Illumination • Radioactivity • Radiation (absorbed) • Angles • Volume Flow Rate • Calorie • Metric Prefixes • Typography • Electric Charge OTHER MISCELLANEOUS CATEGORIES • Timezone conversion • Clothing sizes / Shoe sizes • International power plugs • Running pace calculator • Percentage calculator • Pace • Hex, Binary, Decimal • BMI (metric/inch) HARDNESS SCALES INCLUDED • Rockwell (HRC, HRA, HRD, HRF, HRG, HRE, HR-15-N, HR-30N, HR-45-N, HR45-T, HR-15T, HR-30T, HR45-T) • Brinell (HBW, HBS) • Vickers (HV, • Knoop (HK) The app is available in English, German and Chinese languages. Download now or contact us with any questions.

About

Bandwarden

Features
Read full description

NEW IN 3.0 — REAL TV DATA FOR YOUR EXACT VENUE Bandwarden now works out TV channel occupancy from real FCC records instead of market estimates. Set the venue (offline city or ZIP search, one-time GPS, or coordinates) and it lists every TV channel whose station contour covers that spot. Each channel shows the stations behind it with call sign, class, distance and margin. The data is bundled, so it works with no signal backstage. • 9,939 US TV transmitter sites with contours, from FCC records dated 2026-09-23, covering full power, Class A, low power and translators • Location rule built in: a channel is excluded when you're within a co-channel station's contour plus 4 km (47 CFR 15.236(e), 74.802(b)). You can raise the margin, count or ignore construction permits, and mark corrections for each show • Land mobile channels in 470–512 MHz around 11 metro areas (47 CFR 90.303), plus the Hawaii channel 17 rule • US band rules check with sources: each frequency is checked against the Part 15 and Part 74 wireless-mic bands. It flags licensed-only segments (653–657 MHz, 941–960 MHz and others) and frequencies no rule lists. Part 15 or Part 74 is set for each show • Scan Check: peak level for each TV channel from your imported scan, a one-tap "mark busy channels", and the −84 dBm whole-channel indoor check that applies to Part 74 licensees • Walk-In Finder: pick a guest's system and get clear frequencies ranked by headroom from predicted intermod, plus an estimate of how many more channels fit • Add many channels at once (Vox 1–8), duplicate a channel, and DECT / 2.4 GHz / 5.8 GHz systems are tracked as self-managed instead of getting fake assignments • Export frequency lists: a plan CSV plus one plain-text list per equipment profile (MHz, one per line) for import into coordination software. Share or import complete show files between devices and crew • The PDF report adds an RF Environment page: excluded channels and why, rules flags and sources COORDINATION ENGINE • Rig builder with a database of 155 wireless mic and IEM systems from 30 manufacturers, each with tuning range, step and spacing, or define your own • 2T3O, 3T3O and 2T5O intermod products with severity triage • Constraint-solver auto-assignment that respects locks, spacing, TV exclusions, band rules and your scan, plus a backup frequency pool • Changeover Plans: stage retunes, compare the whole rig before and after, then apply the reviewed set SPECTRUM • Import scan CSVs from common analyzers or any two-column frequency/level CSV • Zoomable plot with scan, assignments, intermod products and exclusions • Six example scans to learn the workflow SHOWS & REFERENCE • Show files hold the venue, rig, rules basis, corrections and notes. Duplicate a show for the next tour stop • Printable PDF frequency report • Built-in US band rules reference with links to the regulation text • 35 reference plates: band plans, compatible-frequency grids, intermod primers and venue checklists HONEST BY DESIGN Bandwarden is a planning tool. Its results and bundled data don't make a frequency legal and don't guarantee interference-free operation. TV data can lag real stations, and low-power station contours are estimates. Always confirm with a scan on site and check the current rules for your situation. PRIVATE AND OFFLINE No account, no ads, no analytics, no network access. Location is optional and stays in your show on your device. Works on iPhone and iPad. One-time purchase, no subscription.

Screenshots

Converter4 screens
Bandwarden4 screens

Verdict

The call

The clearest difference is price: Converter at Free against Bandwarden's $2.99. Converter also leads on iOS requirement (15.6 vs 17.0). Bandwarden's advantage is update cadence (every 2 weeks vs every 2 months). 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

Converter is free to download; Bandwarden costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Converter ships an update every 2 months, Bandwarden every 2 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
Converter versus Bandwarden: the parameters behind the verdict, then further details
ParameterConverterBandwarden
PriceFree — better$2.99
Rating4.9 (981 ratings) — better—
Positive reviews93.9% of reviews—
Number of ratings981 — better—
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better17.0
Further details — not scored
Size37 MB18 MB
Age rating12+4+
DeveloperTrelleborg Sealing SolutionsRobert Corbin

Bugs and requests

Converter

Reported bugs

2 issues
  • Occasional crashes on startup for non-English/German users
  • Conversion from meters to feet does not show inches

Requested features

3 requests
  • Add fuel efficiency conversions
  • Allow users to set favorite conversions as default
  • Improve currency conversion rate updates

Bandwarden

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Converter

No in-app purchases

None

Bandwarden

No in-app purchases

Questions

Is Converter free?
Converter is free to download, with no in-app purchases.
Is Bandwarden free?
Bandwarden costs $2.99, with no in-app purchases.
Do Converter or Bandwarden have ads?
Neither Converter nor Bandwarden shows ads.
Which is updated more often, Converter or Bandwarden?
Converter ships an update every 2 months, and Bandwarden every 2 weeks. Most recently, Converter was updated on October 25, 2026 and Bandwarden on October 24, 2026.

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